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
05060402403/01/200510015008Revised diagnostic trouble code (dtc) p1172 and dtc p2636. *tt05/13/2005
04060408803/01/2005040604088A10014959Replacement of connector when replacing fuel tank module/fuel pump module. *tt05/12/2005
30453045E10013516Shudder or bind on truns in 4 hi. *eh updated 03-01-07. *kb04/20/2005
04060300202/01/200410012703Diagnostic information for intermittent vehicle no crank dead battery. *eh03/10/2005
323210011692Misfire at idle cold and possible p0171 and or p0174. *eh01/28/2005
30873087A10010916Crank no start, stall, hard start, and no cranking rpm. *eh12/16/2004
309701/01/200410010242Oil pan or oil cooler line leak. *sc11/05/2004
302401/01/20043024A10010076Gen iii engine coated piston information. *tc11/04/2004
310701/01/200410010197P0420 and p0430 dtsc in the detroit, michigan area with gen iii v-8 engines. *sc11/04/2004
312101/01/200410010056Exhaust vibration resonance or moan. (2004-2005 gmc denali) *sc11/03/2004
314701/01/200410009957Concerns regarding bulletin 00-02-35-003f. all full size trucks and utilities and hummer parts available. *tc11/02/2004
01368A11/18/200310004165Coolant loss (into the crankcase). *tt11/20/2003
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
0201301/01/200402013A10007119Coolant leak from head cup plugs on gen iii engines. *mr05/26/2004
ENGINE AND ENGINE COOLING - ENGINE
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
423110021021Service vme. supplement to 00-02-35-003l. update on new i-shaft. *kb02/22/2007
05060101405/01/200510017409Oil leak under extreme cold temperatures (-34 degrees c) (-30 degrees f) or colder). *tt11/07/2005
05060402906/01/2005050604029A10017336Flexible fuel (rpo l59) rough idle, misfire, malfunction indicator lamp diagnostic trouble code p0300. *tt11/03/2005
326710017155Diagnostic trouble code p0128 or engine will not reach operating temperature. *sc10/26/2005
355610016942Hard start or extended crank time on initial cold start when using alcohol blended fuels. *sc10/18/2005
32323232A100148701999 - 2005 gen ii cold engine misfire at idle with possible p0171 and/or p0174. *tt05/10/2005
04060404006/01/200410012155Idle instability, low or rough idle with electronic throttle control. *tt02/15/2005
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
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
308701/01/200410009513Crank no start with no cranking rpm spark or injector pulse. *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
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
303201/01/200410008762Service engine soon (ses) light on with p0446 due to dust in the evap vent valve on vehicles that are operated in dusty environments, such as farming or off-road applications. *tt08/23/2004
04060401203/01/2006040604012C10008669Vehicle with flexible fuel will not start, stalls and will not restart, loss of power, poor performance. *tt poor performance and/or fuel gauge reads inaccurate/incorrect. *tt08/13/2004
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
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
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
03060406211/01/200310005559This bulletin is being issued to revise step 4 of diagnostic trouble code (dtc) p2135. *tt03/02/2004
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
00969A01/01/200400969B10005469Engine whistle noise. *tt02/27/2004
03060406010/01/200310004733Information on new spark plugs and gapping. various models including pontiac gto 2004. *tt01/02/2004
030603001A10/01/200303060300110004304Starter cranks after key is released (normal condition). *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
00411B01/01/200400411C10004112Lack of power with tac module code of p1518 reduced power mode. *tt *mj11/18/2003
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
03060403106/01/200310002858Revised diagnostic trouble code p1125. *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
01010211/01/200210000471Vehicle will not start condition. *tt02/27/2003
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
320310011729Resonance noise at idle. *eh01/31/2005
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
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL
05060402103/01/200510015005Revised inspection/maintenance (i/m) evaporative emission (evap) system set procedure. *tt05/13/2005
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

Consumer Complaints


Fail datemilesoccurencesPurchase date
ENGINE AND ENGINE COOLING
06/10/2011104000
 The reduced engine power light came on and reduced the car's power to only be able to go 20 mph. i did reach 30 mph with a down-slope. i was very scared and had my two children in the car. thankfully, i was able to safely pull over to the side of the road. upon researching this issue with my car make and model, it seems to be a common problem and a very serious issue. the engine's power just pulled back without warning! i am taking the car to be serviced tomorrow but cannot fathom to think what could have happened!
01/01/19011
 2003 chevrolet tahoe caught on fire *gr the consumer stated the fan motor would not shut off. the consumer stated her father received 2nd degree burns on his when tried to put the fire out. *jb
01/01/19011
 Gm models 2003-2007 light pick-ups and sport utility. consumer states defective dash clusters. *tgw the consumer owns a 2003 chevrolet tahoe. she stated she experienced a problem with the instrument cluster reading 70 mph also, the water pump failed. *jb
02/26/2009760001
 Bought vehicle in february of 2009 used after driving truck for about 10 days we realized that the speedometer was not moving when the vehicle was in motion. then after that the speedometer would move up in speed after driving the car for about 20 minutes but then stay at the 30mph when stopped once the car would begin moving again the speed would continue to go up from the 30mph mark resulting in the speedometer reading 60mph when the vehicle was actually only going 30mph. this has continued every day since it was noticed so when driving the car you never know how fast the car is actually traveling. *tr
08/09/2004189713
 While driving vehicle lost power. vehicle would not accelerate over 10 mph. dealership was notified, but did not resolve the problem. *ak
08/01/200250108/10/2002
 Engine knocks when it started after sitting for a while untill oil pump picks up.i personally know of five other 5.3 liter v8s that have the same problem,but my dealership has never heard of this .i find this hard to believe. a friend told me that there was a tsb reguarding a check valve of some kind that would stop this. *ak
07/03/20033
 Reduced engine power message displayed 3 times within 4100 miles of brand new tahoe. on 4th visit, dealer replaced throttle body with a new one at 4366 miles. *jb
08/26/20035001
 We have a 2003 tahoe with a 5.3l v8. there is a hissing noise and a vibrating in the engine after running for about 15 minutes. the dealership can't fix it and doesn't know what is wrong with it. they think it has to do with the a/c but they replaced compressor and belt and it still makes the noise.*ak
ENGINE AND ENGINE COOLING - COOLING SYSTEM
06/13/200637000
 Air conditioner, compressor, clutch and belt tensionor on chevrolet tahoe. belt tensionor breaks locking up causing compressor clutch to sieze then causing compressor to disentergrate internally shooting internal components thru accumalator and inside vehicle climate control system. serpentine belt tenstsionor could cause belt to break which drives the entire system to include power steering. this is a common problem for chevrolet models, however it may only begin having the problem at 3-4 years of ownership therefore appearing to be a normal breakdown of components. the problem is common enough the dealers and experienced mechanics maintain the parts as basic stocked items.
ENGINE AND ENGINE COOLING - ENGINE
05/15/200835015
 A scheduled oil change on my 2003 chevy tahoe revealed broken metal pieces. cormier chevrolet who is my service/purchase dealer determined that the debris came from 3 broken rocker arms. cormier made the necessary repairs under warranty, however, 3 months later the same problem manifested itself again. this time cormier replaced all 16 rocker arms, but i had to pay a $100.00 deductible. *tr i feel the necessary repairs were caused by defective assembly and/or parts. especially when my vehicle is driven 98% of the time on local roads only, and has just 35,015 total miles and was purchased brand new.
06/23/2008384161
 When starting the vehicle, check engine light comes on and dash says reduced engine power. vehicle will only drive about 15 miles per hour. upon researching this through various internet websites, this same problem has and is happening to a huge amount of 2003 tahoe owner's and it's always a faulty wiring harness problem - yet gm refuses to acknowledge there is a problem. on a side note, headlights have always been very dim. *tr
10/01/2003107/16/2003
 Vehicle experienced a total immediate loss of power while driving.*mr almost rear ended another vehicle at a high speed twice during the last break down on a busy highway. the consumer was very dissatisfied with the dealership help in assisting with vehicle. please investigate *cb
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
02/26/2003723111/23/2003
 The vehicle vibrated, which was due to a loose exhaust system.*jb
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - MANIFOLD/HEADER/MUFFLER/TAIL PIPE
06/14/200410300305/31/2003
 Consumer complained about excessive vibration. nechanic replaced engine mounts/ tansmission, and intermittent steering shaft, but vibration continued. there was no final solution. *ak
08/30/20032500108/30/2003
 Ever since purchasing my chevrolet tahoe lt brand-new in august of 2003, the muffler and/or the exhaust system has made an exploding sound both while the vehicle is running and after it is shut off. at stoplights and after being parked, you both hear and feel explosions from under the truck. gm contends the sound is steam building up in the muffler and exploding, but admits it is not a normal backfire, and states that some tahoes do it, and some do not. they have released two separate fixes for the problem but neither has been effective, and the last one came out over a year ago. official gm policy prohibits replacing any mufflers/exhaust systems on vehicles exhibiting this problem - owners are simply told the explosions are normal. after much discussion, gm replaced my muffler, and the second one does the same thing. needless to say, it is an alarming sound and feeling to have in a new vehicle, and logic dictates that steam explosions inside a metal box can only go on for so long before serious damage is done (i.e. the muffler itself explodes near the gas tank.) i'm not sure what the nhtsa can do, but any help you can provide is most welcome.*ak
12/18/20035
 Consumer stated vehicle rumbled and made noise while stopping at a red light or stop sign. consumer took vehicle to dealer/mechanic 5 times, they replaced the muffler, but the problem was getting worse. *ak