2004 GMC Envoy

The subject vehicles are model year (MY) 2002-2009 Chevrolet Trailblazer, GMC Envoy, 2004-2007 Buick Rainier, 2003-2008 Isuzu Ascender, 2005-2009 Saab 9-7X, 2002-2004 Oldsmobile Bravada, 2003-2006 Chevrolet SSR, 2005-2009 Buick Lacrosse, and 2006-2008 Pontiac Grand Prix. This scope includes the Trailblazer/Envoy variants: 2002-2006 Envoy XL/Trailblazer EXT and 2004-2005 Envoy XUV. The original scope of this investigation was expanded to include all vehicles equipped with the subject Headlight Driver Module (HDM). The focus of the investigation was to determine whether actions performed by General Motors adequately addressed any unreasonable risk to motor vehicle safety in the subject vehicles concerning the headlights and the HDM that controls them.Under normal electrical load and environmental conditions, the HDM can overheat inside the Underhood Electrical Center (UEC). This can cause the module to fail and result in a simultaneous loss of both low beam headlights and both daytime running lights (DRLs), often with no warning or prior detectability to the driver. This failure can be intermittent or permanent. No other exterior lights are affected. High beams, turn signals, brake lights, and reverse lights are still operational.General Motors addressed this issue with 2 recalls (14V755 & 15V519) and a special coverage program (N172091910). In view of the recalls and special coverage program implemented by GM and the vehicle high beams continuing to operate, ODI has tentatively concluded that the actions taken by GM mitigate any unreasonable risk to safety posed by HDM failure in the subject vehicles.Accordingly, the investigation is closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exist. The agency reserves the right to take additional action if warranted by new circumstances.The ODI reports cited above are available for review online at NHTSA.gov under the identification numbers in the attached document.

DURING THE COURSE OF THIS EA INVESTIGATION, ODI OBSERVED THAT THE MAJORITY OF THE COMPLAINTS (88%) AND WARRANTY CLAIMS (94%) WERE REPORTED FOR VEHICLES THAT ARE REGISTERED FOR USE IN THE SALT BELT REGION OF THE US.THIS AREA INCLUDES 20 STATES IN THE NORTHEAST, MID ATLANTIC AND THE MIDWEST REGIONS AND THE DISTRICT OF COLUMBIA.CONSUMERS IN THE SALT BELT REGION REPORTED TO ODI THAT THEY COULD SMELL FUEL VAPORS IN THEIR VEHICLES WHILE DRIVING.UPON FURTHER EXAMINATION OF THEIR VEHICLES, THEY DISCOVERED THAT FUEL VAPORS WERE COMING OUT OF THE TOP OF THE FUEL TANK. THIS CONDITION IS CAUSED BY CORROSION OF THE RETURN AND SENDER LINES OF THE FUEL PUMP MODULE.WATER AND ROAD SALT COLLECT ON TOP OF THE FUEL PUMP LEADING TO SMALL PINHOLES APPEARING ON THE FUEL LINES.FUEL MAY LEAK AND COLLECT ON TOP OF THE MODULE AND/OR SPILL ONTO THE GROUND.THE DATA EVALUATED UNDER THIS INVESTIGATION REFLECT A RELATIVELY LOW FREQUENCY OF OCCURRENCE THAT LARGELY ARISES IN SALT BELT STATES.GM HAS EXTENDED THE WARRANTY ON THE SUBJECT COMPONENT TO TEN YEARS OR 120,000 MILES.FURTHER USE OF AGENCY RESOURCES DOES NOT APPEAR TO BE WARRANTED AT THIS TIME; ACCORDINGLY, THIS INVESTIGATION IS CLOSED.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY THE CIRCUMSTANCES.FOR ADDITIONAL INFORMATION SELECT DOCUMENT SEARCH.

BY LETTER DATED APRIL 29, 2005, GM NOTIFIED THE AGENCY THAT IT IS CONDUCTING ASAFETY RECALL ( NHTSA RECALL NO. 05V198 ) INVOLVING CERTAIN MODEL YEARS (MY) 2003-2004 ISUZU ASCENDER, CHEVROLET TRAILBLAZER, GMC ENVOY, OLDSMOBILE BRAVADA AND MY 2004 BUICK RAINER VEHICLES.THE RECALL APPLIES TO VEHICLES BUILT FROM APRIL 2003 THROUGH NOVEMBER 2003 FOR A TOTAL VEHICLE POPULATION OF 286,478.GM REPORTS THE DIRECTIONAL/HAZARD SIGNALS FAILURE IS DUE TO STICKING CONTACTS ON ROUTING RELAYS IN THE FLASHER MODULE.GM WILL REPLACE THE FLASHER MODULE ON ALL INVOLVED VEHICLES.BASED ON GM'S SAFETY RECALL ACTION, THIS INVESTIGATION IS CLOSED.

GM STATES THAT SOME BRAKE/TAIL LAMP BULBS CAN PREMATURELY BECOME INOPERATIVE DUE TO MALFUNCTIONING BRAKE/TAIL LAMP SOCKETS.ON MARCH 2, 2004, GM INITIATED A 6-YEAR/72,000 MILE SPECIAL POLICY FOR 989,487 SUBJECT VEHICLES TO INSPECT AND REPLACE THE REAR BRAKE/TAIL LAMP BULB SOCKET ASSEMBLIES.ON APRIL 4, 2004, THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED A PRELIMINARY EVALUATION (PE04-032) BASED ON CONSUMER COMPLAINTS ALLEGING BRAKE LIGHTS NOT OPERATING WHEN THE BRAKE PEDAL IS DEPRESSED.ON AUGUST 3, 2004 ODI UPGRADED PE04-032 TO AN ENGINEERING ANALYSIS (EA04-021).BY LETTER DATED OCTOBER 27, 2004 GM NOTIFIED NHTSA THAT IT WILL CONDUCT A SAFETY RECALL (NHTSA # 04V527) COVERING SUBJECT VEHICLES THAT WERE NOT ALREADY REPAIRED UNDER GM'S SPECIAL POLICY.MY 2004 SUBJECT VEHICLES BUILT AFTER AUGUST 8, 2003 CONTAIN IMPROVED BRAKE LAMP ASSEMBLIES AND ARE NOT INCLUDED IN THE RECALL.GM DEALERS WILL INSTALL THE IMPROVED BRAKE LAMP ASSEMBLY ON SUBJECT VEHICLES BUILT ON AUGUST 8, 2003 AND EARLIER.THE ACTION TAKEN BY GM IS SUFFICIENT TO RESOLVE THE ISSUES RAISED BY THIS INVESTIGATION.ACCORDINGLY, THIS INVESTIGATION IS CLOSED.

The contact owns a 2004 GMC Envoy. The contact stated that while the vehicle was parked and unoccupied, the contact noticed that the front passenger's door was on fire. The contact stated that he arrived home just in time and noticed the fire. The contact stated that, because it was raining, the contact's wife had powered the window up; however, the contact noticed that the window was down when the fire occurred. In addition, the contact stated that the fire was blazing, and after the fire was extinguished, the smoke was still visible. The contact extinguished the fire. The contact disconnected the battery. In addition, the contact stated that it could have been a huge fire because the fuel tank had just been refilled prior to the failure. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 133,295.

NHTSA ID

11705548

Incident

Dec 16, 2025

Mileage

133,295 mi

fraudulent emissions certificate fraudulent mileage fraudulent vin EMISSIONS CERTIFICATE matching an out of state TEXAS vin [XXX] CALIFORNIA [XXX] . FRAUDULENT DEALER SALE. FRAUDULENT DMV CALIFORNIA REGISTRATION AND TITLE TRANSFER. LIQUIDS GASES ODORS FUMES EMITTING FROM VEHICLE [XXX] [XXX] [XXX] HAVE ILLLEGAL TRANSFER OF TITLE TO MYSELF FROM DEALER AND ILLEGAL TRANSFER OF FRAUDED REGISTRATION FROM DEALER. AND BELIEVE VIN IS NOT ACCURATE ACCORDING TO VEHICLE NOR BARCODE OR OTHER COMPONENTS INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11609248

Incident

Jul 9, 2024

The contact owned a 2004 GMC Envoy. The contact stated that while driving at an undisclosed speed, the vehicle was shaking and made an abnormal rattling sound before the vehicle lost motive power and stalled. The vehicle was restarted and driven to the dealer to be diagnosed. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 130,000. The VIN was unavailable.

NHTSA ID

11535000

Incident

Jul 15, 2015

Mileage

130,000 mi

Headlight's,taillight's,turn signals stop working whenever they want.It's pretty scary to lose your headlight's when your driving at night.There's nothing i can do about it,except to sit wherever it happend and wait for them to come back on.My wife was following me one day and told me my brakelight's and turn signal stopped working and started to work again,she said this happened a couple time's at the same red light.There a couple of thing's (electrical)inside the vehicle that don't work anymore but i really dont care about them.To get the odometer to work i have to knock pretty hard on the plastic cover that cover's the instrument cluster,sometimes it stay's on,most of the time it wont stay on.The DIC (driver control center) doesn't work anymore.I cant even get to it.The speakers on the left side of the vehicle dont work anymore.I thought i would tell you about the inside also because it could be part of the problem.All of this happened when i was driving home from my daughter's two night's ago.I bought this vehicle about three or four's year's ago,and i had no problem's with it untill the other night.The person i bought it from is a good friend of mine.He said he never had a problem with it,plus i have been in this vehicle countless times,that's why i bought it. Thank you.

NHTSA ID

11478324

Incident

Aug 7, 2022

The contact owns a 2004 GMC Envoy. The contact stated while driving at various speeds, the vehicle would independently accelerate without warning. The vehicle was taken to a local dealer where it was not diagnosed but continued to experience the failure. The manufacturer was informed of the failure and informed the contact that they were unable to assist. The failure mileage was approximately 135,000.

NHTSA ID

11444168

Incident

Nov 29, 2021

Mileage

135,000 mi

TL* THE CONTACT OWNS A 2004 GMC ENVOY. THE CONTACT STATED THAT WHILE DRIVING AT 50 MPH HE HAD THE SWERVE TO AVOID A HEADON COLLISION FROM A VEHICLE THAT WAS IN HIS LANE. THE VEHICLE WENT OFF THE ROAD AND CRASHED INTO A CONCRETE BARRIER.THE CONTACT HAD A FRACTURED STERNUM AND A BRUISED RIGHT ANKLE, KNEE AND ELBOW. THE CONTACT VISITED THE EMERGENCY ROOM ON HIS OWN WITHOUT BEING TRANSPORTED BY AN AMBULANCE.THE CONTACT STATED THAT NONE OF THE AIR BAGS IN THE FRONT DEPLOYED. A POLICE REPORT WAS FILED. THE VEHICLE WAS TOTALED BY THE INSURANCE COMPANY AND TOWED FROM THE CRASH SITE. THE ENTIRE FRONT OF THE VEHICLE WAS SMASHED IN INCLUDING THE FRAME. THE BACK AXEL DROPPED AFTER THE COLLISION AND BOTH RIMS ON THE BACK TIRES WERE SHATTERED. THE FRONT RIMS WERE ALSO CRACKED. THE DEALER AND MANUFACTURER HAD NOT BEEN CONTACTED YET. THE FAILURE MILEAGE WAS 180,000.

NHTSA ID

11378518

Incident

Dec 3, 2020

Mileage

180,000 mi

I WAS DRIVING IN THE CITY AT NIGHT TIME AND MY LOW BEAM LIGHTS QUIT WORKING. I DID NOT NOTICE IT RIGHT AWAY BECAUSE OF THE STREET LIGHTS. THIS COULD HAVE CAUSED AN ACCIDENT AND PUT MY HUSBAND, DAUGHTER AND MYSELF AT RISK.

NHTSA ID

11366788

Incident

Oct 24, 2020

Mileage

160,000 mi

REAR AIR COMPRESSOR BAGS ARE FAULTY....FROM WHAT I UNDERSTAND THIS IS HAPPENING TO MANY GMC ENVOYS AND NEED TO BE RECALLED!!! *TR

NHTSA ID

11323942

Incident

Apr 8, 2020

Mileage

190,000 mi

This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.

This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the noise for assessment by engineering. Technician will need to call General Motors Technical Assistance Center for further assistance.

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester  and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.

This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.

This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have high and low pressures, outside temperature, humidity, and vent temperature.

This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed for the vehicle in question and its applications. Technician should not use the information that is provided by the antilock braking system tire size selection.