Bulletins

BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
ENGINE AND ENGINE COOLING
PIP-4138K01/01/201110037933Ready06/08/2011
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
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
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
0122501/01/200401225A10007717Engine coolant leak at intake gasket. * mj07/08/2004
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
3691B10019426Generation iii v8 engine piston repairs. *tt03/14/2006
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
308110010375Service engine soon light and p0300 when towing, cruising uphill or on hard acceleration. *tt11/17/2004
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
301501/01/2004100087816.0l lq4 vin u engine restriction. *tt08/23/2004
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
03060102408/01/200310004371Rattle noise in engine. *tt12/04/2003
030601024A03/01/2004030601024B10004301Rattle noise in engine. *tt12/01/2003
00634A11/18/200310004162Gen iii engine noise after hot soak restart. *tt11/20/2003
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
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
010601029B07/01/2002010601029A634805Some customers may comment on higher than expected engine oil consumption. *tt10/09/2002
02060402305/01/2002634723Some customers may comment on a mild to severe engine ping (spark knock) during acceleration and / or illuminated malfunction indicator lamp with diagnostic trouble code p0332 set. *tt10/07/2002
010417004A01/01/2005010417004B627861Clunk, bump or squawk when vehicle comes to a complete stop or acceleration from complete stop. *yh update. *tt02/25/2002
01060400602/01/2001619179Some customers may comment on a lean hesitation, sag or stumble present during light to moderate accelerations. *tt05/17/2001
11120012/11/2000617778Some customers may complain that their full-size pickup trucks may be hard to start or intermittently does not start. *tt04/11/2001
02100010/02/2000617717Subject regarding customer complaint of whistle and wind rush or flutter type noise. *tt03/24/2001
0060100102/01/2000611288Some customers may comment on a whirling sound from the lower rear side of the engine, occuring as the engine warms up, between 1500 and 2000 engine rpm on vehicles within various vin breakpoints. *tt06/01/2000
86650611/01/1998602978Some vehicles may experience engine idle shake in drive, park, or neutral. *yc01/22/1999
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
020605003C02/01/2004020605003B10002939Exhaust moan/vibration. *tt update. *tt10/01/2003
020605003A03/01/200302060500310001274Exhaust moan/vibration. *tt04/25/2003
02060500306/01/2002634770Exhaust moan or vibration at low vehicle speeds between 900-1200 rpm under load. *tt10/09/2002
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 - GAS RECIRCULATION VALVE (EGR VALVE)
9900904/30/1999606540Voluntary emission campaign regarding vehicles built with the wrong exhaust gas recirculation valve. *tt08/26/1999
9900904/01/1999606536Subject regarding exhaust gas recirculation valve (egr) misbuilds. *tt08/26/1999
9910905/04/1999605954Recall campaign regarding exhaust gas recirculation valve misbuilds. *tt08/02/1999
9900904/01/1999604888Voluntary emission campaign involving vehicles with a misbuilt exhaust gas recirculation valve. *tt05/18/1999

Consumer Complaints

Fail datemilesoccurencesPurchase date
ENGINE AND ENGINE COOLING
06/09/20014000006/08/2001
 Engine knocks on cold start
10/15/200344000
 Truck had complete loss of oil pressure. mechanic said engine appeared to have been run without oil. knowing that this did not occur the failure had to be caused by a defect in the engine. i have been unable to get any cooperation.
ENGINE AND ENGINE COOLING - COOLING SYSTEM
12/20/200146000611/14/2001
 Repeated abs brake failure. this has not been corrected despite numerous attempts to repair problem(s). heater motor malfunction, repeated wiper arm replacement, tailgate handle malfunction.
11/10/200208/01/2099
 I experienced a sudden onset of a hissing noise coming from under the dashboard. the noise only starts above 1400 rpm and when warm. i have taken it to 2 gmc dealers and 1 independent service shop. all have stated that the noise is water going through the heater core. 1 dealer said that the coolant must have broken down and gelled or scaled into the heater core; therefore, it must be replaced. gmc owners manual states change coolant at 150000 mile or 5 years, if so, why did the coolant break down? this appears to be a major issue and i have read of similar cases. please help. dt
ENGINE AND ENGINE COOLING - ENGINE
02/21/200665000101/01/1999
 Dt*: the contact stated a knocking noise was heard momentarily when starting the vehicle. the vehicle has been taken to the dealership 3 times who determined the pistons were knocking. the problem cannot be repaired. the dealership informed the contact of a tsb #010601028a. updated 3/9/2006 - *nm
03/10/2004499002
 While driving at 30 mph the consumer applied the brakes and the pedal went to the floor, resulting in extended stopping distance. the dealer replaced the rotors and pads twice, however the problem recurred. *ak the vehicle also had tailgate and engine problems. the tires were replaced due to thread cracks. *jb
01/10/200368000009/15/2002
 Fuel pump will over heat and than short out. exhaust always rattles engine knocks cat. converters went out digital display stopped working
05/25/20009009/01/1999
 The engine has two lifters, 5&8 knocking. i've been to the dealer and called the gmc customer service line three times each. they both say there is nothing they can do about it. gm is currently investigating condition.*ak
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE
03/06/20003
 Consumer states there is a loud knocking sound in engine every morning at start up, dealer could not find the cause, the manufacturer offered the consumer a warranty on the engine, consumer still experiencing problem.*yh
03/21/1999112/03/1998
 The engine failed. yh
09/21/1999102/01/1999
 The rear rotors u-joint, carbon build up on throttle, replaced window motor uses 2 qts of oil every 400 to 500 miles , transmission uses 1 qt of oil every 20000 miles , air conditioner fan does not work on high i believe the throttle build up is a safety issue with the gas petal sticking. we have a lemon
06/01/1999
 Engine knocks loudly at start-up and last for aprox. 2 minutes - dealer said this is a normal occurrence. the engine also has spark knock when accelerating and dealer also says this is normal - dealer said this is due to carbon build up on ring lands and could be temporarily repaired but would re-occur within 10,ooo miles. this problem started at 15,000 miles and continues to date. i cannot solve the problem with any type of additive advised by the dealer. dealer said gmc has a defective engine and i have to live with it. they told me even if they replaced the motor i would have the same problem with the knocking and pinging on accelleration. the dealer contacted gmc technical advisor dan pratner case # 3970330 and he advised them this was normal for this engine. i find it hard to believe a person can purchase a vehicle with a defective engine and be told this is normal. the public needs to know before they buy this particular product so they do not end up with a defective product that will cause them additional maintenance costs and a very low resale value not to speak of the embarrassment of having a vehicle that knocks loudly on cold start-up. i do not know what the long term effects of this engine knocking will do. if you do investigate this problem and find this to be caused by another problem that can be repaired, please let me know. thank you for your time. *ak
 While driving at 80mph the vehicle will sporadically go out while switching lanes, then kicks back in after a few seconds. dealer can't solve problem. *ak
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM
09/30/19991004/01/1999
 Has occuring ehaust leak, service wont fix. using brakes while slowing and hitting bump in road, brakes will pulseate very hard and vechile will not stop
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL - CATALYTIC CONVERTOR
01/10/200368000009/15/2002
 Fuel pump will over heat and than short out. exhaust always rattles engine knocks cat. converters went out digital display stopped working
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - MANIFOLD/HEADER/MUFFLER/TAIL PIPE
11/07/2003490007
 Faulty braking system engine noise muffler replace instrument panel fault tire wear transmission automatic shifting rearend noise
01/10/200368000009/15/2002
 Fuel pump will over heat and than short out. exhaust always rattles engine knocks cat. converters went out digital display stopped working

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