Bulletins


BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
ENGINE AND ENGINE COOLING
PIP-4138K01/01/201110037933Gm: the service engine soon light is on, there is also a misfire or engine noise. there are multiple possible causes. *rm06/08/2011
PIP-4138K01/01/201110037933Ready06/08/2011
331712/01/20083317F10017214Hard start / no start outside temperatures below freezing. *tt updated 7/13/09. *pe10/28/2005
331210017208No start, hard start, loss of power, or white smoke. *tt10/27/2005
05060402503/01/200510015009Revised diagnostic trouble code (dtc) u2104. *tt05/13/2005
05060402403/01/200510015008Revised diagnostic trouble code (dtc) p1172 and dtc p2636. *tt05/13/2005
338010014932Oil leak from the pcv vent tube. *tt05/12/2005
04060408803/01/2005040604088A10014959Replacement of connector when replacing fuel tank module/fuel pump module. *tt05/12/2005
33753375A10014923Rough idle, service engine soon (ses)light, unstable idle, hesitation, surge or stalling. with diagnostic trouble codes p0300, p0335 or p0336. *tt05/11/2005
329910013563Diesel oil leak from pcv vent tube. *eh04/21/2005
329210013512Diesel engine balance rates all showing zero. *eh04/20/2005
05009000101/01/200510013446Information on the proper air filter for the duramax diesel. *eh04/19/2005
1106200311/06/200310013155Airflow sensor problem. *eh04/11/2005
020601023C11/01/2004020601023D10012750Oil leak at cooler to engine block mating surface. *eh03/14/2005
04060300202/01/200410012703Diagnostic information for intermittent vehicle no crank dead battery. *eh03/10/2005
040604007A04/01/200404060400710012594Service engine soon (ses) light, p0087, p0093, p1093, low power, no start, hard start, fuel in crankcase. this service bulletin replaces 040604007. *eh03/08/2005
03060403708/01/200310012563Service engine soon light on with diagnostic trouble code p0446 set replace canister. *eh03/07/2005
03060403610/01/2006030604036A10012561Information on servicing fuel injectors to avoid contamination. *eh updated 03-19-07. *kb03/07/2005
323910011743Lb7 engine vibration miss or runs rough no diagnostic trouble code. this also includes lb7 c2 c3 c4 c5 d4 d5 e4 e5 k2 k3. *eh01/31/2005
323210011692Misfire at idle cold and possible p0171 and or p0174. *eh01/28/2005
321410011607Engine low oil light on the dic. *eh01/27/2005
30873087A10010916Crank no start, stall, hard start, and no cranking rpm. *eh12/16/2004
3011B3011C10010872Engine oil leak at main bering side bolt. *eh12/15/2004
318706/01/2009PIP-3187A10010865Engine low power will not go over 2300 rpms. *eh updated 6/11/10. *pe12/15/2004
31933193B10010647Excessive oil consumption. *eh12/03/2004
309701/01/200410010242Oil pan or oil cooler line leak. *sc11/05/2004
310701/01/200410010197P0420 and p0430 dtsc in the detroit, michigan area with gen iii v-8 engines. *sc11/04/2004
302401/01/20043024A10010076Gen iii engine coated piston information. *tc11/04/2004
312101/01/2004100101876.6 lb7 engine with a no charge condition with diagnostic trouble code p0380 p0621. *sc11/04/2004
312101/01/200410010056Exhaust vibration resonance or moan. (2004-2005 gmc denali) *sc11/03/2004
316001/01/200410010041Gas engines exhaust buzz or rattle noise. *tc11/03/2004
314701/01/200410009957Concerns regarding bulletin 00-02-35-003f. all full size trucks and utilities and hummer parts available. *tc11/02/2004
0122501/01/200401225A10007717Engine coolant leak at intake gasket. * mj07/08/2004
01368A11/18/200310004165Coolant loss (into the crankcase). *tt11/20/2003
030602005A10/01/200403060200510002857Engine coolant loss with no visible leaks. *tt updated *eh09/29/2003
03060101103/01/200310001292Accessory drive belt whine. *tt04/28/2003
02060103812/01/200210000763Engine knock or lifter noise. *tt03/28/2003
ENGINE AND ENGINE COOLING - COOLING SYSTEM
312101/01/200410010248Exhaust vibration resonance or moan in vehicles with gen iii v8 engines. *tc11/08/2004
307201/01/200410009622The engine coolant temperature or intake air temperature sensor may read -40 degrees when monitored with tech 2. *tt10/13/2004
0201301/01/200402013A10007119Coolant leak from head cup plugs on gen iii engines. *mr05/26/2004
1001200310/01/200310006572Blueheat coolant heater thermo top c. webasto. *mr05/06/2004
0306312/17/20031000536103063 - obd system software upgrade - on-board diagnostic (obd) system software upgrade - diagnostic trouble code (dtc) p0128 engine coolant temperature below thermostat regulating temperature. *tt02/24/2004
03060200709/01/200310004303Loss of coolant. *tt12/01/2003
ENGINE AND ENGINE COOLING - ENGINE
PIP-4492P09/01/2010PIP-4492Q10036464Buick/cadillac/chevrolet/gmc/hummer/pontiac/saab: oil consumption and/or exhaust smoke-possible pcv baffle or lifter concern. upon inspection, obvious oil will be found in the intake manifold and/or pcv vacuum tube. *pe updated 3/21/03/16/2011
PIP-4492P08/01/201010036464Buick/cadillac/chevrolet/gmc/hummer/pontiac/saab: oil consumption and/or exhaust smoke-possible pcv baffle or lifter concern. upon inspection, obvious oil will be found in the intake manifold and/or pcv vacuum tube. *pe03/16/2011
423110021021Service vme. supplement to 00-02-35-003l. update on new i-shaft. *kb02/22/2007
03069300105/01/2006030693001C10020839Diagnostic information on turbocharger malfunction due to lack of engine oil for lbz, lb7, and lly duramax diesel engine. *kb01/24/2007
05060407712/01/200510019582Lack of power lu3 engine) at high ambient temperatures only (if necessary, reprogram pcm with new service calibration).*ak03/30/2006
06060100301/01/200610019474Information on longer main bearing cap bolts required for certain 2001-2006 lb7, lly, lbz duramax diesel engines. *tt03/15/2006
3691B10019426Generation iii v8 engine piston repairs. *tt03/14/2006
05060400702/01/200510017460Poor engine performance - misfire, rough idle, stalls, engine cranks but does not run, service engine soon/check engine light illuminated, diagnostic trouble code (dtc) p0300 set. *tt11/08/2005
05060101405/01/200510017409Oil leak under extreme cold temperatures (-34 degrees c) (-30 degrees f) or colder). *tt11/07/2005
05060400804/01/2005050604008A10017337Diagnostic trouble code (dtc) p1172 or p2636, fuel gauge reads empty, service engine soon (ses) light on. *tt11/03/2005
05060402906/01/2005050604029A10017336Flexible fuel (rpo l59) rough idle, misfire, malfunction indicator lamp diagnostic trouble code p0300. *tt11/03/2005
334310017229Engine oil dipstick unseated or oil leak. *tt10/28/2005
326710017155Diagnostic trouble code p0128 or engine will not reach operating temperature. *sc10/26/2005
3048A10017154Supplement to 03-06-01-024b 4.3l lu3 l35 timing chain tensioner. rattle-type noise coming from the engine at approximately 1800 to 2200 rpms. *tt10/26/2005
355610016942Hard start or extended crank time on initial cold start when using alcohol blended fuels. *sc10/18/2005
70202/01/200510016371Duramax air filter. gm tech links. *tt09/09/2005
32323232A100148701999 - 2005 gen ii cold engine misfire at idle with possible p0171 and/or p0174. *tt05/10/2005
32823282B10013504Engine overheat on vehicles equipped with rpo vyu snowplow prep package. *tt04/20/2005
04060407008/01/2005040604070A10012715Information on the revised fuel filter for the 6.6l duramax diesel. *tt03/11/2005
04060404006/01/200410012155Idle instability, low or rough idle with electronic throttle control. *tt02/15/2005
040604007E10/01/2005040604007F10012150Service engine soon (ses) light, p0087, p0093, p1093, low power, no start, hard start, fuel in crankcase. *tt02/15/2005
04060101806/01/200410012143Information on revised design of intake gasket and related bolts for 2004 mid-year enhancement and prior year service usage. *tt02/15/2005
04060405708/01/200410011213Start/stall or poor driveability after restart, loss of gasoline or cng hours/miles data with bi-fuel vehicle. *tt01/11/2005
04060200606/01/2005040602006A10011206Engine overheating. *tt01/10/2005
04060400112/01/2006040604001C10011126Various intermittent driveability conditions - hesitation, lack of power, etc. *tt01/03/2005
305610010364Check engine light with a p0300 due to 2-4 cylinders misfiring on the same bank of the engine. *tt11/17/2004
305501/01/200410009666Service engine soon light with a p0300 misfire due to misfires mainly on cylinder 7. *tt10/14/2004
303801/01/200410009648Engine tick, rattle or knock noise after cylinder head gasket replacement on the 6.0l engine. *tt10/14/2004
308701/01/200410009513Crank no start with no cranking rpm spark or injector pulse. *tt10/04/2004
308601/01/200410009512Whistle noise from the throttle body area on light throttle acceleration on vehicles with gen iii engines and electronic throttle. *tt10/04/2004
304201/01/20043042A10009379Service engine soon light and / or reduced engine power mode due to diagnostic trouble codes p0120, p0220, p1516 and/or p1518. this condition is normally very intermittent. *tt09/27/2004
304001/01/200410009377Service engine soon light and / or reduced engine power mode due to diagnostic trouble codes p0120, p0220, p1516 and/or p1518. this condition is normally very intermittent. *tt09/27/2004
300401/01/2004100088914.8l 5.3l 6.6l 8.1l p1285 p1286 or p2133 after replacing app sensor. *mj08/25/2004
301501/01/2004100087816.0l lq4 vin u engine restriction. *tt08/23/2004
301801/01/200410008804Engine cylinder head cup plug coolant leak. *mj08/23/2004
302401/01/2004100088004.8 5.3 6.0 gen 111 engine coated piston information. *mj08/23/2004
301101/01/20043011A10008780Repeat engine oil leak at main bearing side bolt. *tt08/23/2004
04060400710/01/2006040604007G10008460Service engine soon (ses) light, p0087, p0093, p1093, low power, no start, hard start, fuel in crankcase. *tt08/02/2004
0135301/01/200401353A10007937Engine misfire due to injector fretting corrosion. *tt07/16/2004
00872A01/01/200410007916Oil pan or oil cooler line leak on gen iii v-8 engines equipped with an oil cooler. *tt07/15/2004
00428E01/01/200400482F10007848Higher than expected oil consumption even after the intake bolts were replaced per 02-06-01-035. *tt07/13/2004
0205101/01/200410007737Intermittent service engine soon (ses) light comes on and code p0700 along with diagnostic trouble code p0742 stored. *tt07/09/2004
02060102211/01/2002020601022A10007609Information on engine ticking. *mj07/06/2004
0026601/01/200400266A10007596Loss of power, hesitates on acceleration on 4.8, 5.3 and 6.0 engines coupled with the 4l60e or 4l65e transmission. *tt07/02/2004
00700A01/01/200400700B100075844.3l l35 engine wide open throttle diagnostic trouble code (dtc) p0335, p0336, p0339. *tt *mj07/01/2004
01119A01/01/200401119B10007576Roll-out for the gen iii small block engines with iridium spark plugs. also includes 2003/2004 m/l vans. *tt07/01/2004
00609B01/01/200400609C10007527Low power, will not go over 2300 rpms. 6.6l lb7 engine. *tt06/30/2004
00733A01/01/200410007275Low oil light on the dic during engine start. *tt06/09/2004
01485B01/01/200401485C10007272Timing chain tensioner breakpoints for service kit or production fix. rattle-type noise coming from the engine at approximately 1800 to 2200 rpms. 4.3l lu3 l35 engine. *tt06/09/2004
00678B01/01/200400678C10007286Engine overheats on vehicles equipped with rpo vyu snowplow prep package. *tt06/09/2004
00764B01/01/2004100072716.6l diesel engine rough idle, clatter, stall and/or diagnostic trouble code (dtc) p1223. *tt06/09/2004
0167401/01/200410007191Vibration from engine mount bracket. *mr06/03/2004
0202901/01/200410006934Inaccurate fuel gauge readings and/or engine stall. *mr05/19/2004
0177401/01/2004100062566.6l lb7 repeat engine oil leak (left side) #2 main bearing cross bolt. *mr04/27/2004
03060406211/01/200310005559This bulletin is being issued to revise step 4 of diagnostic trouble code (dtc) p2135. *tt03/02/2004
0148501/01/200410005500Timing chain tensioner breakpoints for service kit or production fix. rattle-type noise coming from the engine at approximately 1800 to 2200 rpms. 4.3l lu3 l35 engine. *tt03/01/2004
0148401/01/200410005499Gen iii replacement flywheel bolt holes larger than original part. the bolt holes for the crank shaft in the replacement flywheel are larger than the holes in the original part. sit bulletin 1400596. *tt03/01/2004
0149901/01/2004100054812004 6.6l duramax lb7 engines with extended crank during hot engine restart. diagnostic trouble code (dtc) p0193 may or may not be set. sit bulletin 1402202. *tt03/01/2004
00969A01/01/200400969B10005469Engine whistle noise. *tt02/27/2004
01485A01/01/200410005445Timing chain tensioner breakpoints for service kit or production fix for vehicle exhibiting rattle-type noise coming from the engine at approximately 1800 to 2200 rpms. sit bulletin 1408407. *tt02/27/2004
03060406512/01/200310005184Lack of passenger compartment heat and/or raised/rough idle after start and/or p0128 diagnostic trouble code (dtc) stored with no service engine soon light illuminated. *tt02/11/2004
10080310/08/200310004982The engine diagnostic fuel leaks inside of the engine. gm voicemail log. this includes 2000 - 2004 chevroand gmc c4500 and 5500 trucks. *tt01/22/2004
10090310/09/200310004986Duramax diesel fuel in oil diagnostics revisited. gm voicemail log. this includes c4500 and 5500 trucks. *tt01/22/2004
03060405910/01/200310004772Revised fuel leaks inside of engine diagnostic. 2004 chevrolet kodiak and gmc topkick also included. *tt01/06/2004
020601022C01/01/2005020601022D10004742Information on engine ticking. including 2004 chevrolet kodiak c45/c5500 series and 2004 gmc topkick c4500/c5500 series. *tt update. *tt01/05/2004
03060406010/01/200310004733Information on new spark plugs and gapping. various models including pontiac gto 2004. *tt01/02/2004
03060102408/01/200310004371Rattle noise in engine. *tt12/04/2003
03060102308/01/200310004370Higher than expected oil consumption <8500 gvw. various models including 2003-2004 chevrolet kodiak (c4500-c5500 series models)and gmc topkick (c4500-c5500 series models). *tt12/04/2003
03060300809/01/200310004373Avoiding oil level sensor harness damage during lower oil pan installation. *tt12/04/2003
03060300708/01/200310004372Availability of starter motor solenoid if damaged during service. 2004 chevrolet kodiak c4500/5500 and gmc topkick c4500/5500 included. *tt12/04/2003
03060404102/01/2005030604041A10004377Poor engine performance - misfire, rough idle, service engine soon/check engine light illuminated, diagnostic trouble code (dtc) p0300 set. *tt12/04/2003
03060405310/01/200310004315Revised fuel injector balance test with tech 2 (manual transmission). *tt12/02/2003
03060405410/01/200310004316Revised fuel injector balance test with tech 2 (automatic transmission). various models including 2003-2004 chevrolet kodiak and gmc topkick. *tt12/02/2003
03060404510/01/200310004306Revised diagnostic trouble code (dtc) p0093 or dtc p1093 diagnostic tables. *tt12/01/2003
030601024A03/01/2004030601024B10004301Rattle noise in engine. *tt12/01/2003
030603001A10/01/200303060300110004304Starter cranks after key is released (normal condition). *tt12/01/2003
03060404610/01/200310004307Revised engine cranks but does not run diagnostic. *tt12/01/2003
00827C11/18/200310004256Service engine soon (ses) light on with tac module codes p1516 and possible codes p1514, p1515, p1518. *tt11/24/2003
0141511/18/200310004219Cam sensor connector does not fit sensor when engine is replaced. *tt11/21/2003
00634A11/18/200310004162Gen iii engine noise after hot soak restart. *tt11/20/2003
01342100041214.3l lu3 engine hot soak hesitation low power. *tt11/19/2003
00411B01/01/200400411C10004112Lack of power with tac module code of p1518 reduced power mode. *tt *mj11/18/2003
03060403106/01/200310002858Revised diagnostic trouble code p1125. *tt09/29/2003
03084900906/01/200310002870Revised engine oil pressure gage inaccurate or inoperative diagnostic information. *tt09/29/2003
03060403303/01/2004030604033A10002860Revised diagnostic trouble code p0336. *tt update. to include 2004 isuzu nqr commercial models. *tt09/29/2003
03060403206/01/200310002859Check engine light on with no drivability concerns, diagnostic trouble code p0120, p0220, p1516, or p1518 set. *tt09/29/2003
03060403003/01/2007030604030C10002166Multiple driveability symptoms of long or hard starts, chuggle, rough idle and light or intermittent misfire due to clogged fuel injectors. *tt08/14/2003
03060300101/01/200310000938Engine starter cranks after key is released on cold start. *tt04/04/2003
02060405912/01/200210000725Engine runs rough, service engine soon light on, diagnostic trouble codes p0300 or p0335 set. *tt03/27/2003
01010211/01/200210000471Vehicle will not start condition. *tt02/27/2003
020601023A09/01/200202060102310000063Oil leak at oil cooler to engine block mating surface. *tt02/10/2003
ENGINE AND ENGINE COOLING - ENGINE - DIESEL
0705702/01/200810024154Special coverage adjustment - engine glow plug on certain vehicles with 6.6l diesel v8 (rpo lb7 - vin 1) engine & california emissions (yf5/ne1) or clean fuel emissions (vcl). csc was received. *nj03/13/2008
07060100905/01/200710021839Diesel engine cylinder head gasket missing thickness grade markings. *kb06/22/2007
331410017211Duramax diesel engine hard start, no start, stall of diagnostic trouble code p0093, p1093. *tt10/27/2005
3225A1001713701-05 6.6 lly lb7 duramax diesel engine air filter usage. *sc10/25/2005
00968A01/01/200400968B100075346.6l lb7 lly diesel engine with rough, unstable, low idle speed or stall. *tt06/30/2004
0151201/01/2004100054626.6 liter duramax diesel engine fuel knock noise. various models including the 2004 gmc c4500 and c5500. sit bulletin 1406247. *tt02/27/2004
030693001A08/01/2005030693001B10004319Diagnostic information for turbo failure due to lack of oil or repeat turbo failures. *tt12/02/2003
0203508/01/2002634223Customer satisfaction program regarding engine oil contamination. *tt09/28/2002
02035B08/09/2002634208Customer satisfaction program regarding engine oil contamination for certain models including the 2003 gmc medium duty. *tt09/28/2002
02035A08/05/200202035634227Customer satisfaction program regarding engine oil contamination. *tt09/28/2002
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE
02060102705/01/2005020601027A634283Information on higher than expected oil consumption. nlm09/28/2002
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE - BELTS AND ASSOCIATED PULLEYS
304801/01/200410009391Timing chain tensioner breakpoints for service kit or production kit. supplement to 03-06-01-024b. *tt09/27/2004
01242A01/01/2004100062846.6l lb7 lly diesel engine drive belt chirping on shut down. sit bulletin 1460352. *tt04/27/2004
020601010A06/01/200302060101010002837Serpentine belt identification and diagnosis for medium duty trucks. various models including the chevrolet and gmc c5500 md 2003. *tt09/26/2003
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE - TURBO-CHARGER
34013401A10020072Turbocharger oil feed line kinked or restricted. *tt07/19/2006
0149601/01/2004100054936.6l lb7 duramax diesel turbocharger noises or fuel economy complaint. service vme. sit bulletin 1401355. *tt03/01/2004
10080310/08/200310004983Excessive duramax turbocharger whine noise or possibly a performance or a fuel economy complaint. gm voicemail log. this includes 2003-2004 4500 and 5500 trucks. *tt01/22/2004
ENGINE AND ENGINE COOLING - ENGINE - OTHER FUEL TYPES - TURBO-CHARGER
001496A01/01/200410005513This message is in regard to duramax turbocharger noises or possibly a performance or fuel economy complaint. service vme. 6.6 lb7 diesel engine. p0102, p0103, p0236. *tt03/01/2004
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
03060500707/01/200310012553Exhaust rattle noise or vibration. *tt03/07/2005
030605008B11/01/2005030605008C10005576Advance service information - exhaust system popping/snapping noise when vehicle is hot, at idle or immediately after vehicle is shut off. *tt bulletin 03-06-05-008, dated 11/01/2003 replaced. *tt03/04/2004
020605003C02/01/2004020605003B10002939Exhaust moan/vibration. *tt update. *tt10/01/2003
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL
05060402103/01/200510015005Revised inspection/maintenance (i/m) evaporative emission (evap) system set procedure. *tt05/13/2005
307301/01/20041000962403-06-04-037 supplement - evap canister installation information. *tt10/13/2004
0415200404/15/200410009218Gm is announcing a product emission recall, number 04016. vehicles could have the .02 engine off natural vacuum, eonv, evaporative emission system leak detection diagnostic disabled by the powertrain control module that incorrectly referen09/17/2004
0401604/01/200410006920Evaporative emission system diagnostic disabled by incorrect fuel level reference. recall bulletin. *tt05/19/2004
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL - CATALYTIC CONVERTOR
311901/01/200410010101Engineering investigation - catalytic converter replacement. *sc11/04/2004
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL - CRANKCASE (PCV)
PIP-4492P08/01/201010036464Buick/cadillac/chevrolet/gmc/hummer/pontiac/saab: oil consumption and/or exhaust smoke-possible pcv baffle or lifter concern. upon inspection, obvious oil will be found in the intake manifold and/or pcv vacuum tube. *pe03/16/2011
PIP-4492P09/01/2010PIP-4492Q10036464Buick/cadillac/chevrolet/gmc/hummer/pontiac/saab: oil consumption and/or exhaust smoke-possible pcv baffle or lifter concern. upon inspection, obvious oil will be found in the intake manifold and/or pcv vacuum tube. *pe updated 3/21/03/16/2011
PIP334302/01/2008PIP3343A10024344Possible engine oil leak due to pcv freeze-up, equipped with the 4.8, 5.3, 6.0, and 6.2 v-8 engines. *nj04/07/2008
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - MANIFOLD/HEADER/MUFFLER/TAIL PIPE
020605005A12/01/200202060500510000726Exhaust / muffler heat shield rattle, popping noise under vehicle. *tt03/27/2003

Consumer Complaints


Fail datemilesoccurencesPurchase date
ENGINE
06/07/2010840001
 After a 3 mile ride, backing up truck noticed smoke then flames coming out from under the hood. fire melted all electical lines, destroyed hood and windshield. weather was perfect, air conditioning may have been on. *tr
06/07/2010840001
 After a 3 mile ride, backing up truck noticed smoke then flames coming out from under the hood. fire melted all electical lines, destroyed hood and windshield. weather was perfect, air conditioning may have been on. *tr
06/07/2010840001
 After a 3 mile ride, backing up truck noticed smoke then flames coming out from under the hood. fire melted all electical lines, destroyed hood and windshield. weather was perfect, air conditioning may have been on. *tr
06/07/201084000
 After a 3 mile ride, backing up truck noticed smoke then flames coming out from under the hood. fire melted all electical lines, destroyed hood and windshield. weather was perfect, air conditioning may have been on.
06/07/201084000
 After a 3 mile ride, backing up truck noticed smoke then flames coming out from under the hood. fire melted all electical lines, destroyed hood and windshield. weather was perfect, air conditioning may have been on.
06/07/201084000
 After a 3 mile ride, backing up truck noticed smoke then flames coming out from under the hood. fire melted all electical lines, destroyed hood and windshield. weather was perfect, air conditioning may have been on.
ENGINE AND ENGINE COOLING
02/17/2012112000
 I have several broken bolts on my exhaust manifolds. my check engine light goes on and off for emmisions related codes. i will not be able to pass a smog test unless this is fixed. several auto shops want about $1,000 to fix this. its an ongoing problem and is known by chevy/gm and yet they will do nothing to help or fix it. this should be recalled immediately!
07/07/201192900
 While idling at a red light the smell of exhaust fumes became prevalent inside the passenger cabin. upon inspection of the exhaust system it was determined 5 of the exhaust manifold bolts had prematurely failed allowing exhaust gas to escape from the engine into the engine compartment and into the passenger cabin. the vehicle is currently used sparingly where family members or friends are not allowed to ride in the truck until the exhaust manifolds are repaired.
07/04/201056000
 Tl- the contact owns a 2003 chevrolet silverado 1500. while driving at approximately 45 mph the vehicle went over a uneven surface on the road and a message appeared on the instrument panel that read reduce engine power mode. the check engine light illuminated on the instrument panel. the vehicle suddenly stalled. the failure occurs intermittently. the vehicle was towed to the dealer. the technician stated the fuel pedal actuator had to be replaced. the failure continued after the repair. the vehicle was taken back to the dealer. the technician was unable to diagnose the cause of the failure. the vehicle was not repaired. the approximate failure mileage was 56,000. ds
07/07/201192900
 While idling at a red light the smell of exhaust fumes became prevalent inside the passenger cabin. upon inspection of the exhaust system it was determined 5 of the exhaust manifold bolts had prematurely failed allowing exhaust gas to escape from the engine into the engine compartment and into the passenger cabin. the vehicle is currently used sparingly where family members or friends are not allowed to ride in the truck until the exhaust manifolds are repaired.
07/07/201192900
 While idling at a red light the smell of exhaust fumes became prevalent inside the passenger cabin. upon inspection of the exhaust system it was determined 5 of the exhaust manifold bolts had prematurely failed allowing exhaust gas to escape from the engine into the engine compartment and into the passenger cabin. the vehicle is currently used sparingly where family members or friends are not allowed to ride in the truck until the exhaust manifolds are repaired.
07/07/201192900
 While idling at a red light the smell of exhaust fumes became prevalent inside the passenger cabin. upon inspection of the exhaust system it was determined 5 of the exhaust manifold bolts had prematurely failed allowing exhaust gas to escape from the engine into the engine compartment and into the passenger cabin. the vehicle is currently used sparingly where family members or friends are not allowed to ride in the truck until the exhaust manifolds are repaired.
02/24/200636500607/01/2003
 Dt*: the contact stated intermittently, when the outside conditions are cold the steering is stiff. this occurs at any speed. the problem is worse when the brake pedal is depressed and turning the steering wheel. the dealership replaced the valve in the power steering. this has not corrected the problem. there is a technical service bulletin, #10013533, regarding this, but no repair available. the water pump gasket was replaced. the transfer case bearings were replaced. updated 03/22/06. *jb
11/11/200418996402/11/2003
 A/c stops working. pressure switches changed, coolent recharged, now they are adding an electric fan to help cool the condenser. can't figure out what is wrong.
10/23/200439100112/06/2002
 After the vehicle had been parked for a week, a fire started under the hood. the fire was put out and the dealership was notified. the problem was not resolved. the cause was not determined. *jb *sc
08/08/2004160004
 The engine sensor continued to stay on without warning . the consumer was concerned that the vehicle will stall while driving. the dealer replaced the fuel module seal, however the problem still continued. please provide additional information. *jb *tc
06/15/200313148
 First time:main computer failed. second time:stalling, running rough, boggs down and makes loud noise,mis-fire in #5 & #6 cilander.a/c not working.not fixed. third time: everything same as second time and engine light now coming on.not fixed. fourth time:all lights on dash come on and all messages appearing on message board.not fixed. after computer changed truck preformed unsatisfactory and is still unsatisfactory. all having to do with computer. told it is a random problem that is hard to detect and may not ever be fixed.
06/15/200313148
 First time:main computer failed. second time:stalling, running rough, boggs down and makes loud noise,mis-fire in #5 & #6 cilander.a/c not working.not fixed. third time: everything same as second time and engine light now coming on.not fixed. fourth time:all lights on dash come on and all messages appearing on message board.not fixed. after computer changed truck preformed unsatisfactory and is still unsatisfactory. all having to do with computer. told it is a random problem that is hard to detect and may not ever be fixed.
04/07/2004406/30/2003
 While driving 65 mph the vehicle stalled without warning. this caused a lost of steering and brakes. the vehicle had been inspected three times and could not be reproduced. *ak the first problem occurred when the consumer was traveling at 75 mph down a slope when the vehicle lost all power (engine, brake, and steering) the consumer would have to turn the switch four times in order for the engine to start. the problem repeated itself two more times with similar instances. *sc *jb
12/02/2002
 Consumer states the check engine light comes on then vehicle would shut off. some days the vehicle would run all day without shutting off dealer notified. ts
11/04/2002
 Consumer states while driving and no warning. the check engine light would come on, then the vehicle would shut off. some days the vehicle would go all day without shutting off. consumer states so far the vehicle shut down 8 times. dealer notified. ts
ENGINE AND ENGINE COOLING - COOLING SYSTEM
08/13/2010138000
 Low coolant level warning light kept coming on. had dealer check it out and they found that my vehicule had defective heads bullitin # 06-06-01-0198
08/13/2010138000
 Low coolant level warning light kept coming on. had dealer check it out and they found that my vehicule had defective heads bullitin # 06-06-01-0198
08/13/2010138000
 Low coolant level warning light kept coming on. had dealer check it out and they found that my vehicule had defective heads bullitin # 06-06-01-0198
08/13/2010138000
 Low coolant level warning light kept coming on. had dealer check it out and they found that my vehicule had defective heads bullitin # 06-06-01-0198
ENGINE AND ENGINE COOLING - ENGINE
10/16/2007817391
 Vehicle loosing coolant. determined cylinder head defect, tsb #06-06-01-019b. cylinder head embossed with castech logo developed a porosity crack in a very specific area. *tr
08/15/2004600408/29/2003
 Dt: the consumer complained about several problems. while driving he had trouble shifting from first gear. the dealer reprogrammed the engine control module and the transmission module control. the vehicle was still shifting hard, and the rpms revved. the replacement of the aforementioned did not remedy the transmission problem. the second problem was with the brake light coming on the cluster assembly. the service dealer replaced it, and it seemed to work well at this time. the third problem was with a noise in the rear of the vehicle. the dealer replaced the gear kit, two gaskets, case, the rear differential carrier assembly, carrier gears, and shims. the noise was still heard. the dealer recommended that the contact install carpet to cut down on the noise. the final problem was with a loss of rear traction. the dealer has been unsuccessful in identifying the root of the traction problem.*ak the cruise control stopped working. updatd 11/29/05. *jb
12/28/2004320002506/26/2003
 When braking at any speed brake pedal would go to the floor, and there would be extended stopping distance. dealership was notified, but did not resolve the problem. *ak abs displayed brake system failure. the consumer stated that the brakes failed on inclines. the consumer stated that there was an electrical short. the odometer failed and added extra mileage. the tires started separating after 300 miles. the radio became hot and shorted out. the air conditioner shorted out. the consumer stated that the new vehicle checklist was not filled out nor reviewed with him. the consumer stated that the engine knocks. the consumers fingers were burned by the radio after it got hot. the consumer stated that he heard a growling noise in the power steering. the consumer heard a buzzing noise in the transmission. the consumer had to use the emergency brake to stop the vehicle coming down a hill. the right headlight went out and turned black. the headlight was replaced with the wrong high beam light. the cd player will not take the cd. the speedometer will only go to 20 mph at times. *tc
06/01/20031205/05/2003
 While driving at any speed vehicle stalled. consumer restarted the vehicle and drove it to the dealer for inspection. however, mechanic could not duplicate the problem . *ak *nm
08/01/20031
 Engine makes a tapping sound when cold or warm. dealer said it was called a piston slap. dealer also said that there was no fix for the situation at this time and that it would not hurt the performance of the engine. i should not have to hear engine noise on a new vehicle. *jb
10/10/2003350009/04/2003
 Ticking sound coming from engine after engine warms up, occurs at idle. *ak
ENGINE AND ENGINE COOLING - ENGINE - DIESEL
08/01/200428000104/10/2004
 I purchased a 2003 chevrolet silverado duramax in 4/04 used with 21,020 miles. at about 28,000 it started to smoke upon acceleration. this is a very thick blue smoke. the dealer has looked at it twice and says they cannot find anything wrong. but i think if i have to get it checked for emissions that it would fail miserably. it now has approx. 45,000 miles but is still covered with an extended warranty to about 72,000.*ak
03/14/20051
 While the vehicle was parked the driver noticed a brownish liquid leaking from underneath the vehicle. the driver took the vehicle to the dealer, and the mechanic determined that the filter and other parts needed to be replaced due to corrosion. *ak (the vin number entered per consumer, did not match the vehicle given) *sc *jb
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE - BELTS AND ASSOCIATED PULLEYS
10/08/200319765304/26/2003
 Steering wheel intermittently locked up, mostly when making right turns, and some when making left turns. vehicle had been at dealer on three occasions. dealer replaced the serpentine belt and the left hub. however, dealer was unable to resolve this problem. *ak
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
11/18/2003180002
 Tires developed bubbles, and the steel belts are visible in places. also, exhaust system is designed with the pipes sitting directly on top of the spare tire. *ak
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL
07/03/20031638404/29/2003
 Problems with encoder motor sensor.*mr the four wheel drive light illuminated several times, the dealer replaced the transfer case shift. also the service engine soon light illuminated and the dealer replaced the evaporative emission canister vent solenoid. *ts *jb
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL - GAS RECIRCULATION VALVE (EGR VALVE)
12/20/20031500005/22/2003
 4x4 not working, charcoal canister, cd-player 3 times, complete new brake system from rotors,seals,caliperes etc. that i paid for $1,000., window regulator, door latches, noise coming from the steering area, dash peeling apart, chapman chevy replaced all four tires twice within 50,000 miles-i finally went and spent $1,200 on new tires to make sure my family and i our safe
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - MANIFOLD/HEADER/MUFFLER/TAIL PIPE
05/15/200560000111/20/2002
 Warranty on catalytic converters on chev silverado 1500 v6 4.3 went bad corrosion inside rattling. replaced ,but not the muffler which was checked at same time and the bellow was found to have been loose due to corrosion,and debris from the converters, but was not covered on warranty. why? i was informed it wasn't 't part of the exhaust system.??? the exhaust goes through the converters and out the muffler. *nm
04/05/2004185001
 While driving at low speeds vehicle vibrated and the consumer heard a loud humming noise. dealership informed the consumer that the problem pertained to the muffler. *ak