Bulletins

BulletinBulletin dateReplacement BulletinItem no.SummaryAdded
ENGINE AND ENGINE COOLING
PIP-4568K01/01/201110037941Gm: service engine soon light is on with a misfire and a possible tick noise. *rm06/08/2011
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
PIP-4138K01/01/201110037933Ready06/08/2011
PIP-4568K01/01/201110037941Ready06/08/2011
06060200302/01/200610019510Operating characteristics of the electro-viscous (ev) fan clutch and diagnostic tips for cooling fan noise, delayed transmission shifts and/or engine revving too high. *tt03/20/2006
05060103411/01/200510018733Engine oil leak at rear cover assembly area. *tt01/12/2006
36143614A10018577P0300 due to random misfires not felt - possible accessory pulley. *tt01/06/2006
362610018562Ses light with p0613 or p0614 on tech 2 - dtcs not in si. *tt01/06/2006
05060102609/01/200510017818Information on use of bolt extractor tool kit part number en-47702 for removing broken cylinder head or main bearing cap bolts on inline truck engines. *tt12/02/2005
ENGINE AND ENGINE COOLING - COOLING SYSTEM
385710019211Supplement to bulletin 05-01-37-002a, poor rear heat performance . *ak02/21/2006
ENGINE AND ENGINE COOLING - COOLING SYSTEM - FAN
363710018538Ev cooling fan noise characteristics - do not replace ev fan. *tt01/05/2006
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
RB-1014907/01/201010033524Buick/chevrolet/gmc/saturn: malfunction indicator light may not illuminate for secondary air injection system faults. models lucerne, trailblazer, envoy, and ion. *pe08/20/2010
SB-07-06-04-019A11/01/200810028831General motors: intermittent mil/ses/ dtc p2138 with reduced engine power (repair instrument panel (ip) to body harness connector). 2005-08 gm passengers cars/light duty trucks (incl. saturns). *pe06/01/2009
06013900204/01/2007060139002B10022260Front blower motor inoperative or may not shut off in extremely low ambient temperature conditions. *kb07/24/2007
07060400301/01/200710021121Lsj, l61, lk5, l52, ll8 engine - reduced engine power, mil/ses light, dtc p1516, p2135, p2138. *kb03/07/2007
06060404809/01/2006100208794.2l ll8 engine flashing and/or mil/ses light. rough idle, misfire. dtc p0300, p0301, p0302, p0303, p0304, p0305, and p0306. *kb01/25/2007
369310019456A rough idle/running concern may be encountered with a p0014 and/or p0017 dtc. *tt03/15/2006
3693A10019419Rough idle with dtc p0014 and/or p0017 - inspect cam actuator solenoid screens and crankshaft end play. *tt03/14/2006
05060201210/01/2006050602012B10018986Service engine soon (ses) or check engine light on, dtc p0526, p0480, p1481, and p1484 set. *tt updated. *kb01/26/2006
315410/06/20063154B10010285Misfire, bump or multiple bumps after a 1-2 upshift. *tt11/09/2004
04060300505/01/2006040603005A10008665Proper connection information to avoid blown 125 amp fuse and various interior electrical system conditions when jump starting vehicle. *tt08/13/2004
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL
RB-1014907/01/201010033524Buick/chevrolet/gmc/saturn: malfunction indicator light may not illuminate for secondary air injection system faults. models lucerne, trailblazer, envoy, and ion. *pe08/20/2010
ENGINE AND ENGINE COOLING - EXHAUST SYSTEM - EMISSION CONTROL - CRANKCASE (PCV)
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

Consumer Complaints

Fail datemilesoccurencesPurchase date
ENGINE AND ENGINE COOLING
02/17/201264000
 Tl* the contact owns a 2006 gmc envoy. the contact stated that while driving approximately 45 mph, the check engine warning light illuminated. the vehicle was taken to the dealer where they advised the contact that the engine was running clean and they were unable to make repairs until the component had actually failed. the manufacturer was later contacted and offered no assistance. the failure mileage was approximately 64,000.
02/17/201264000
 Tl-the contact owns a 2006 gmc envoy. the contact stated that while driving approximately 45 mph, the check engine warning light illuminated. the vehicle was taken to the dealer where they advised the contact that the engine was running clean and they were unable to make repairs until the component had actually failed. the manufacturer was later contacted and offered no assistance. the failure mileage was approximately 64,000. kmj
07/18/2010117450
 Tl-the contact owns a 2006 gmc envoy. the harness switch that plugged into the air condition was burnt out. as he turned the switch on there was a burning smell coming from the unit. the vehicle was taken to two mechanic shop after inspecting they found the harness switch burnt out. the vehicle was not taken to the dealer or the manufacturer was contacted. the vehicle wass not repaired. the vin was unavailable. the failure mileage was 117,450...mw
ENGINE AND ENGINE COOLING - COOLING SYSTEM
06/19/2011100000
 Tl- the contact owns a 2006 gmc envoy. while driving approximately 35 mph the contact noticed smoke escaping from the air conditioner unit. the contact stopped the vehicle, looked under the hood and noticed the resister and motor wires had melted. the vehicle was not taken to a dealer for diagnostics. the vehicle was no repaired. the approximate failure mileage was 100,000. ds
ENGINE AND ENGINE COOLING - COOLING SYSTEM - FAN
04/14/20063006004/11/2006
 Dt*: the contact stated that the vehicle does not accelerate smoothly and makes a loud noise during the first 3 minutes of driving. the accelerator pedal must be depressed all the way to the floor for the vehicle to move, and then normal acceleration begins after driving 3 minutes. the vehicle was taken to the dealer on 05/02/06 who could not duplicate the problem. the dealer representative inspected the vehicle on 07/20/06 and determined that the clutch fan that cools the engine created the noise but could not determine the cause for the acceleration problem. the manufacturer was alerted on numerous occasions who finally identified that it is normal for the vehicle's acceleration to perform in the documented manner. updated 08/15/06. 8jb
ENGINE AND ENGINE COOLING - ENGINE
05/04/200814000
 Tl*the contact owns a 2006 gmc envoy. while driving approximately 30 mph, the vehicle vibrated and the engine stalled intermittently. prior to the failures, the engine warning light illuminated on the instrument panel. the vehicle was taken to an authorized dealer and they replaced the intake valve, head gasket, timing belt, and cylinder head. the failures recurred on a separate occasion. the vehicle is currently not being driven due to the safety risk involved. the contact will take the vehicle to the authorized dealer for diagnostic testing and repair. the failure mileage was 14,000 and current mileage was 16,000.

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