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
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
31933193B10010647Excessive oil consumption. *eh12/03/2004
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
312101/01/200410010056Exhaust 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
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
0201301/01/200402013A10007119Coolant leak from head cup plugs on gen iii engines. *mr05/26/2004
03060200709/01/200310004303Loss of coolant. *tt12/01/2003
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
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
301501/01/2004100087816.0l lq4 vin u engine restriction. *tt08/23/2004
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
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
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
00428E01/01/200400482F10007848Higher than expected oil consumption even after the intake bolts were replaced per 02-06-01-035. *tt07/13/2004
0158601/01/200401586A100076688.1l changes in heads, bolts and gasket for for 2004 1/2 engines. various models including the chevrolet and gmc 2500hd/3500 my2001-2004 and 2001, 2002, and 2003 gmt 560. *mj07/07/2004
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
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
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
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
03060403303/01/2004030604033A10002860Revised diagnostic trouble code p0336. *tt update. to include 2004 isuzu nqr commercial models. *tt09/29/2003
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
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
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
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
07/25/20121060001
 Driving in middle lane on highway out of state with kids in the car engine just quit--no power, couldn't signal to move or get to side of road, just sat in middle lane. very scary!! towed to a nearby dealer-told us the fuel pump shorted the engine and had to replace the fuel pump. no advance warning-only a blower motor seemed to be malfunctioning that morning (have had a/c problems). no issue with power until it just quit. seems to be a common complaint when researching this year and vehicle--loss of power or decreased power. with the number of incidents found, someone should research this before another car is struck from behind and there are injuries or worse, fatalities. to have something this major happen without any symptoms or warning lights, and for the number of cases found, seems irresponsible at best, negligent at least. please look into this! *tr
07/25/2012106000
 Driving in middle lane on highway out of state with kids in the car engine just quit--no power, couldn't signal to move or get to side of road, just sat in middle lane. very scary!! towed to a nearby dealer-told us the fuel pump shorted the engine and had to replace the fuel pump. no advance warning-only a blower motor seemed to be malfunctioning that morning (have had a/c problems). no issue with power until it just quit. seems to be a common complaint when researching this year and vehicle--loss of power or decreased power. with the number of incidents found, someone should research this before another car is struck from behind and there are injuries or worse, fatalities. to have something this major happen without any symptoms or warning lights, and for the number of cases found, seems irresponsible at best, negligent at least. please look into this!
ENGINE AND ENGINE COOLING
08/04/2008
 I have 2003 suburban 1500, that keeps getting a error message reduce engine power. the vehicle will all of sudden while driving, reduce speed and i can't accelerate above 25-30mph. i will have to pull over and turn car off for 10-15 seconds before it resets, however it will continue to happen over and over again! it is very scary and dangerous when i have my kids or my wife drive it because you never know when the car will have this happen. strangely, when we drive on the highway we can use the cruise control feature when we reach 25mph and use the cruise control to accelerate that way with minimal occurances. i have taken the car to 2 chevy dealers and 3 mechanics nither can tell us whats wrong! this is frustrating because we only have on car, and we know this a safety hazard and extremly dangerous and somebody has to look into this! i only hope someone who reads these complaints has the power to help me and everyone with this problem.
09/14/2011153221
 I was driving my suburban when a message reading reduced engine power came on and my car cut off. i was very lucky to only be going 20 mph in my neighborhood. had i been going faster and had a car been following close behind, we would have caused an accident. this problem still persists and stops every 2-3 miles. we have to pull over, leave the car off for 5-10 seconds and then restart. we are then able to go another 2-3 miles. this is our only vehicle so we have no choice but to drive with our hazards on because we have 4 kids at 3 different schools to drop off and pick up each day. after researching this issue online, i am seeing that this is occuring in hundreds of chevrolet and gm cars. it is my understanding that these 2 are the same company. i do not dare get on a mjor hiway or interstate because of the fear of the car shutting down and causing an accident. chevrolet and gm are aware of this problem, as many people have filed complaints with both the company and the nhtsa. why is there no recall to fix this? this is a very dangerous situation and could likely lead to a deadly accident. i am discussing a class action lawsuit with a number of people and once the info is collected, i will contact an attorney. please help get these unsafe vehicles off of the road and into the dealerships to be fixed. thank you.
06/02/2010140000
 My suburban goes to reduced power unexpectantly and the engine will stall causing a loss of power steering and control of the vehicle. my suburban has been taken in to the dealer i purchased the vehicle from on five occasions and the dealer is unable to fix the problem.. the most recent time was 9/1/2011. it went to reduced power 10 miles after leaving dealership and stalled as i pulled out into traffic from a restaurant. a number of cars had to brake excessively and swerve around me until i could angle my suburban off the road without power steering. the truck weighs 6700 lbs and i needed all my strength to turn the wheel enough to get off the road. i am fearful about driving my suburban and the high probability of injury to myself or others.
01/01/2011132000
 Tl*the contact owns a 2003 chevrolet suburban. the contact stated that she stated the vehicle so that it could warm up and within a few minutes it was on fire. the police and fire department were called and a report was filed. the vehicle was towed to an independent mechanic who advised her that the fire started in the lower resistor connector and the blower motor. the vehicle was deemed as destroyed. the manufacturer was contacted and an investigator also inspected the vehicle denied her claim. the failure mileage was approximately 132,000.
01/01/2011132000
 Tl-the contact owns a 2003 chevrolet suburban. the contact stated that she was letting her vehicle warm up one morning, and once she checked on it, it was on fire. the police and fire department were called and a report was available. the vehicle was towed to a independent mechanic and they advised her that it started in the lower resister connector and the blower motor. the vehicle was deemed as destroyed. the manufacturer was contacted and a investigator was sent out to the garage and in the end they denied her claim. the failure mileage was approximately 132,000. tb
12/01/2009140000
 Tl-the contact owns a 2003 chevrolet suburban. after having the oil changed at an independent repair shop the contact began to smell a burning oil odor coming from the engine. the contact began to notice the vehicle was consuming oil excessively and would replace the oil approximately 2 to 3 times a week. approximately 1 year later upon starting the vehicle the contact began to hear a knocking noise coming from the engine before it stalled. the vehicle was taken to an independent repair shop where the motor was being replaced. the failure mileage was 140,000 and the current mileage was 150,000. sm.
08/05/2007412/01/2003
 On three different occasions our 2003 chevy surburban has stopped in the middle of traffic for no apparent reason. we have taken it to the car dealership and they have charged us to put it on the computer machine and cannot find anything wrong with it, which leads me to believe that there is some kind of default with the vehicle. the last time we were making a 150 mile trip from our home to another city, and it stopped 5 times. we would have to pull off the highway and let it come to a complete stop, and then it would start back. needless to say i was very frightened and this is really dangerous. i would appreciate you all investigating this to see if there is a problem with the vehicle, since nothing shows up when they test it. at the present time i refuse to drive or ride in it for fear it will stop in the middle of traffic again, and we may not be able to pull over and someone is going to be seriously hurt. once before when we first purchased it , they found out at the dealership that there was pin holes in the heads on the motor, which it was taken in because it was smoking. this vehicle was purchased brand new. *jb
ENGINE AND ENGINE COOLING - ENGINE
04/15/2005112/09/2002
 Dt: consumer owns a 2003 chevrolet suburban. he took vehicle to dealer at least seven times since april. when the vehicle turns over it just does not start. he came back from myrtle beach, and while driving on the interstate at 80 mph when the vehicle shut down and stalled. he managed to coast off the interstate, it then started back up with one attempt. he traveled about 150 miles and the vehicle stalled again and it started back, this time it started and was running a little rough. the consumer took vehicle to the next exit and found a dealer who told him that he could make it back to ohio if he did not drive it very fast. the dealer told him that it was the fuel filter that was not able to handle the pressure. he drove back at 55 mph, and the vehicle did not shut down. the next morning he took vehicle to dealer in farris ohio where he bought the vehicle. the dealer changed the ignition switch, the fuel pump, and something he thinks is called a ubeck. he was frustrated that he seemed to spend too much time at the dealer instead at home.*ak
11/22/20035100102/21/2003
 Oil pump failure with only 5,000 miles on engine. gm wants to extend warranty and leave it at that. with no oil circulation internal engine damage possible and reliability/safety/trustworthiness of engine in question. want gm to replace motor but they want me just accept extended warranty and go away. as a consumer i believe that i should not have to accept the risk of further engine failure and want a replacement based on substantial impairment and value impairment as well as substantial loss of use (been in repair 18 days since february). *la
ENGINE AND ENGINE COOLING - ENGINE - GASOLINE
06/01/2004120001003/23/2004
 Vehicle stalls while driving during hot weather. it will not start until the vehicle has sat for 10-20 minutes. *cn
05/15/20055000109/15/2003
 At start-up, usually when engine has been run/warmed, a clicking (as if the oil level was low/lifters) sound is heard for 30-plus seconds. my concern is the long-range (i.e., out of warranty) effects this condition will have on the life of the engine. the concern has been expressed to service reps at ancira chevrolet, who, at 3-4 occasions, replied that it is normal. *jb