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
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
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
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
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
ENGINE AND ENGINE COOLING - ENGINE
423110021021Service vme. supplement to 00-02-35-003l. update on new i-shaft. *kb02/22/2007
326710017155Diagnostic trouble code p0128 or engine will not reach operating temperature. *sc10/26/2005
32323232A100148701999 - 2005 gen ii cold engine misfire at idle with possible p0171 and/or p0174. *tt05/10/2005
04060404206/01/200410012162Revised diagnostic system check - engine controls. *tt02/16/2005
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
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
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
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
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
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
020604054B03/01/2003020604054A10001273Increased accelerator pedal effort, idle instability. *tt04/25/2003
02060102909/01/200210000064Needle bearings found in oil pan. *tt02/10/2003
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE
010601029B07/01/2002010601029A634805Some customers may comment on higher than expected engine oil consumption. *tt10/09/2002
020604023A06/01/2002020604023634788Some customers may comment on a mild to severe engine ping (commonly referred to as spark knock) usually worse during acceleration and / or an illuminated malfunction indicator lamp. *tt10/09/2002
02060400502/01/2002629495Subject regarding revised diagnostic trouble code p1221 service manual information. *tt04/02/2002
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE - BELTS AND ASSOCIATED PULLEYS
31070107/31/2001625211Subject regarding drive belt noise. *yh11/19/2001
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
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 - CATALYTIC CONVERTOR
311901/01/200410010101Engineering investigation - catalytic converter replacement. *sc11/04/2004

Consumer Complaints


Fail datemilesoccurencesPurchase date
ENGINE AND ENGINE COOLING
04/15/200870000104/02/2001
 Every morning when the vehicle is started there is a clicking noise. it increases in speed with rpm. once hits 2000 (or so) rpm, noise will stop. noise will also quit after 5 mins of idle. cannot determine cause. happens regardless of outside temp, however is better in az summer months. mechanic cannot find source of the problem. all ideas/solutions welcome. *tr
02/01/20016000610/25/2000
 Purchased brand new 2001 chevy tahoe and within first 3 months noticed oil level was lower than expected. began 'oil consumption' test with tracy dealership that extended into 2004 until they finally agreed 2 tear down the engine...all 3 years was ongoing oil loss within the engine! they only went 2 the cylinder heads despite several requests by expert mechanic's advice 2 go further into the piston level. tracy chevrolet reported their findings as 'parts missing from cylinder heads from original engine assembly'. gm's ceo promised 2 replace my engine if the oil consumption wasn't fixed. within 1 month of that repair, oil loss continued. another 'oil consumption' test scenario was established and another 3 years passed with me reporting 2 them every 500 miles for oil level checks. again, 3 years passed before they finally decided 2 tear the engine down again. (3/7/07). the cylinder heads were fine so gm recommended that they go down 2 the piston level (sound familiar??) where they found another missing part from original factory assembly! (oil control rings) they tried 2 have me accept they were doing me a favor as i was now out of warranty. i had 2 remind them that i reported this 2 them well within my 1st year, they were responsible for delaying appropriate repairs, and now, this engine was probably missing other parts. i was holding them 2 their original promise of replacing my engine. the ceo's office has it well documented yet they are going back on their promise and want me 2 just keep an unsafe, unreliable engine. they can't guarantee that other vital parts aren't missing and i doubt any of them would feel safe with this engine. can you tell me what damage has occurred 2 other engine parts due 2 this extensive prolonged oil loss? they refuse 2 provide any further assistance, information, or my replacement engine. they are offering me instead 3 free oil changes for 6 years of worry, inconvenience, and enduring their complacency with this safety issue. *jb
07/16/2005911401203/05/2001
 Vehicle stalling in traffic and in reverese
102/28/2001
 Vehicle failed to start and the security light came on the dashboard. *ak
ENGINE AND ENGINE COOLING - ENGINE
12/01/200115000212/01/2001
 Tl*the contact owns a 2001 chevrolet tahoe. the contact noticed that the vehicle was experiencing oil consumption failure. tracy chevrolet performed an oil consumption diagnostic that spanned three years. the result of the diagnostic was that there was potential engine failure. in 2004, the dealer stated that the cylinder head level was missing a part from the factory assembly. two months later, the vehicle continued to experience oil consumption failure. a general motors customer service agent promised to provide a new engine if the repair to the cylinder did not remedy the failure. three years later, the dealer performed another oil consumption test and found yet another part missing from the original assembly. the contact asked general motors to replace the engine as promised but they refused to comply. the current mileage is 83,600 and failure mileage was 15,000.
06/28/200210008106/16/2001
 While driving at any speed consumer heard a loud noise coming from the front. vehicle was taken to the dealer for inspection, and mechanic determined that the loud noise was normal. *ak *nm
01/01/200423000103/10/2001
 A loud embarrassing and annoying internal engine knock. defective due to design and manufacturing quality consistency problems. higher than normal levels of wear related materials in oil analysis. vertical piston and cylinder wall scuffing/scratching or scoring on the hammering (noisy) cylinders upon visual inspection. reduced combustion chamber compression on the hammering (noisy) cylinders. increased oil consumption. increased exhaust emissions. *jb
12/11/20031
 Oil light flashed on the dashboard. this caused the vehicle to shut down. consumer took the vehicle to the dealer for analysis, and mechanic noticed sludge inside of the engine. *ak
11/29/2002
 While traveling on the highway without prior warning the vehicle will shut down. please provide additional information, dealer is aware of the problem. ph
10/01/2002
 There is a loud squeaking noise when driving. consumer states' took vehicle to dealaer. ts
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE
01/03/2008136000109/10/2001
 I have a 2001 tahoe with a 350 motor in it with 136,000. it began to make a noise so i took it to a mechanic. first we thought it was a pulley, but after taking the valve covers off it was noted that the noise was louder and the oil supply to the heads was not what it should be. now i am told that it would be more cost effective to put a used motor in it for $3,000 (71,000 miles). they can not tell me why this happened and i did my part by maintaining my vehicle on time every time it needed scheduled maintenance. i am sick about this. *tr
07/15/2001504/01/2001
 The roof strut that the headliner attaches to is punched too big for the plugs they installed. gm has replaced the headliner, plugs, and now want to install felt around the plud and ram it back in which is not a fix for the problem. i have been very patient waiting for them to either replace the strut or the car. i am at the end of my rope with this, can you please advise me what to do? dt
1
 The consumer stated that the engine clicks when it is cold. *yh
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
02/05/2003
 Nhtsa#00-v-343-000: consumer has the same problem and dealer could not duplicate or correct the problem. ph
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL - CATALYTIC CONVERTOR
04/21/2001111/01/2000
 I feel that i stopped the vehicle just seconds before it would have burst into flames, because when i opened the hood to see where the smoke and smell of burning metal and plastic was coming from the catalytic converter was completly red and glowing from the engine malfunction.
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - MANIFOLD/HEADER/MUFFLER/TAIL PIPE
06/12/2004100000609/07/2001
 Why does the manual state that one can pull up to 8700lbs. if the tahoe can barely handle 3500lbs? the springs have been replaced twice the manifold is cracked the fuel pump went out, the universal joint is going out, the transfer case is leaking and has only been used twice in 3 years, and has already been repaired once last year, the steering pump is going out, these are only the problems i can think of. *jb