NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
187 reports33,000 miles · Feb 10, 2007
Engine And Engine CoolingVisibility
I PURCHASED A 2004 ENVOY WITH 18,000 MILES IN THE SUMMER OF 2006. BEGINNING IN JANUARY 2007, MY 3 YEAR OLD SON LET ME KNOW THAT HE WAS COLD WHILE RIDING IN THE BACK SEAT AND BEGGED THAT I TURN OFF THE AIR. TURNS OUT THAT THE VENT IN THE BACK OF THE CAR WAS BLOWING ICE COLD AIR ON MY SON. THE TEMPERATURE OUTSIDE WAS APPROXIMAT…
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I PURCHASED A 2004 ENVOY WITH 18,000 MILES IN THE SUMMER OF 2006. BEGINNING IN JANUARY 2007, MY 3 YEAR OLD SON LET ME KNOW THAT HE WAS COLD WHILE RIDING IN THE BACK SEAT AND BEGGED THAT I TURN OFF THE AIR. TURNS OUT THAT THE VENT IN THE BACK OF THE CAR WAS BLOWING ICE COLD AIR ON MY SON. THE TEMPERATURE OUTSIDE WAS APPROXIMATELY 10 DEGREES. I CALLED AND SCHEDULED A TIME TO TAKE MY CAR INTO THE DEALERSHIP, AS IT WAS STILL UNDER WARRANTY. I FOUND OUT THAT THE VEHICLE HAD A "BULLETIN" STATING THAT GMC WAS FAMILIAR THAT THERE WAS HEAT FAILURE IN THE BACK OF THE CARS, BUT THE COMPANY WAS CHOOSING NOT TO DO A FULL RECALL. INSTEAD, THEY WERE WAITING FOR CUSTOMERS TO DISCOVER THE PROBLEM AND BRING IT IN FOR REPAIR. THEY HAD TO INSTALL A SPECIAL PUMP, HOWEVER, THIS STILL DID NOT FIX THE PROBLEM. INSTEAD, IT JUST MODIFIED THE TEMPERATURE OF THE AIR FROM APPROXIMATELY 20 DEGREES TO MAYBE 50 DEGREES. NOT A LOT OF COMFORT IN A MINNESOTA WINTER. I WAS INFORMED THAT BOTTOM LINE, IT WAS A DESIGN FLAW WITH THE VEHICLE, AND THAT I COULD JUST TRY TO FORCE THE AIR FROM THE FRONT OF THE CAR TO THE BACK SEAT. WHAT IS THE POINT OF HAVING VENTS IN THE BACK OF THE CAR, AND HAVING A SEPARATE HEATING ELEMENT SPECIFICALLY FOR THE BACK OF THE CAR? I PURCHASED THIS CAR BECAUSE I THOUGHT THAT WITH THE VENTS IN THE BACK, IT WOULD HELP HEAT THE CAR FASTER IN THE WINTER, HELPING TO KEEP MY SON WARM. I DO NOT BELIEVE THAT HEAT SHOULD BE A LUXURY, AND AM DISAPPOINTED THAT GMC WOULD NOT DO MORE TO CORRECT THE PROBLEM. I WANT IT TO BE KNOWN TO THE GENERAL PUBLIC THAT THIS IS A PROBLEM IN THE ENVOY AND TRAILBLAZER, ESPECIALLY FOR FAMILIES WITH SMALL CHILDREN WHO DO NOT HAVE A VOICE TO LET THEIR PARENTS KNOW THE ICY AIR BLOWING ON THEM. *NM
NHTSA ODI #10182174
37,000 miles · Feb 9, 2007
Electrical System
SPEEDOMETER MALFUNCTIONING, CURRENTLY READING 68 MPH WHILE CAR IS STILL. *JB
NHTSA ODI #10182061
50,000 miles · Jan 20, 2007
Electrical System
SPEEDOMETER DOESN'T WORK. IT WILL JUMP AROUND AND STICK ON ANY GIVEN SPEED AND REMAIN THERE. SOMETIMES WHEN THE VEHICLE IS RESTARTED IT WILL DECREASE 5 MPH FROM THE POINT AT WHICH IT WAS LAST POSITIONED. I CANNOT REGULATE MY SPEED WITHOUT THE SPEEDOMETER AND AFRAID THAT I WILL CAUSE AN ACCIDENT. IT HAS NOT BEEN FIXED.
NHTSA ODI #10179250
50,000 miles · Dec 11, 2006
Electrical System
SPEEDOMETER BEGAN ACTING UP A FEW MONTHS AGO AND NOW IT'S CONSTANTLY ACTING UP. SOMETIMES IT SHOWS ME GOING FASTER THAN ACTUAL AND SOMETIMES IT SHOWS ME GOING SLOWER THAN ACTUAL AND SOMETIMES IT JUST SITS BELOW ZERO AND DOESN'T MOVE AT ALL. NOW THE OIL PRESSURE GAUGE STOPPED WORKING. IT READS ALL THE WAY PAST 80 AND DOESN'T E…
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SPEEDOMETER BEGAN ACTING UP A FEW MONTHS AGO AND NOW IT'S CONSTANTLY ACTING UP. SOMETIMES IT SHOWS ME GOING FASTER THAN ACTUAL AND SOMETIMES IT SHOWS ME GOING SLOWER THAN ACTUAL AND SOMETIMES IT JUST SITS BELOW ZERO AND DOESN'T MOVE AT ALL. NOW THE OIL PRESSURE GAUGE STOPPED WORKING. IT READS ALL THE WAY PAST 80 AND DOESN'T EVEN MOVE WHEN I TURN THE VEHICLE OFF. I DO NOT TRUST ANY OF MY GAUGES NOW. I CANNOT BE ASSURED THAT ANY OF THEM ARE READING CORRECTLY. *NM
NHTSA ODI #10175816
61,000 miles · Nov 27, 2006
Electrical System
THE ONE "ELECTRICAL" PART THAT CONTROLS THE INSTRUMENTS THAT GIVE THE SPEED OF THE CAR, RPMS, GAS, OIL, ECT....ALL GAUGES DO NOT WORK. THERE HAS BEEN NO RECALL ON THIS YET WITH GMC, I HAVE A 2004 GMC ENVOY AND THIS PROBLEM STARTED TO OCCUR RIGHT AFTER THE 60K MILE MARK. THIS IS A TRUE "DANGER"...I HAVE NO IDEA WHAT SPEED, HOW …
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THE ONE "ELECTRICAL" PART THAT CONTROLS THE INSTRUMENTS THAT GIVE THE SPEED OF THE CAR, RPMS, GAS, OIL, ECT....ALL GAUGES DO NOT WORK. THERE HAS BEEN NO RECALL ON THIS YET WITH GMC, I HAVE A 2004 GMC ENVOY AND THIS PROBLEM STARTED TO OCCUR RIGHT AFTER THE 60K MILE MARK. THIS IS A TRUE "DANGER"...I HAVE NO IDEA WHAT SPEED, HOW MUCH GAS, WHAT MY ENGINE IS DOING...NOTHING...THE DEALERSHIPS WANT ANYWHERE FROM $400.00 TO $600.00 TO FIX THIS PROBLEM. THIS IS A TRUE MECHANICAL DEFECT. THE SERVICE MANAGER AT ONE OF THE LOCAL DEALERSHIPS, SAID THAT GMC HAS A REAL PROBLEM....THEY HAVE TO REPLACE THIS ONE PART OFTEN. ITS SOMETHING THEY SEE OFTEN. I WANT GMC TO RECALL THIS PART AND FAST...I NEED MY GAUGES TO WORK. *JB
NHTSA ODI #10174487
30,000 miles · Oct 13, 2006
Tires
MY 2004 ENVOY AFTER DRIVING IT FOR A YEAR WITH NO LONG ROAD TRIPS THE TIRES HAD WORN UNEVENLY AND TWO WERE ALMOST BALD. THIS IS A SHORT TIME FOR TIRES AND THEY WERE ROTATED WHEN NEED. THE WARRANTY COVERED REPLACING THE TIRES AND NOW IT HAS BEEN ANOTHER YEAR OR SO AND THEY HAVE DO THE SAME THING. GMC DOES NOT WANT TO REPLACE T…
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MY 2004 ENVOY AFTER DRIVING IT FOR A YEAR WITH NO LONG ROAD TRIPS THE TIRES HAD WORN UNEVENLY AND TWO WERE ALMOST BALD. THIS IS A SHORT TIME FOR TIRES AND THEY WERE ROTATED WHEN NEED. THE WARRANTY COVERED REPLACING THE TIRES AND NOW IT HAS BEEN ANOTHER YEAR OR SO AND THEY HAVE DO THE SAME THING. GMC DOES NOT WANT TO REPLACE THEM AGAIN, THEY SAY IT IS NORMAL WEAR. SO MY QUESTION IS HOW MANY PEOPLE REPLACE THEIR TIRES EVERY YEAR? *NM
NHTSA ODI #10170764
454,415 miles · Sep 21, 2006
Exterior Lighting
PROBLEM WITH BRAKE LIGHT NOT COMING ON. THE FUSES AND TAIL LIGHTS HAVE BEEN CHECKED; ALL FUSES AND BULBS ARE FUNCTIONING. THIS IS HAZARDOUS AND DANGEROUS WHILE DRIVING, FOR MYSELF AS WELL AS UNSUSPECTED DRIVERS BEHIND ME. THIS WILL ALSO CREATE PROBLEMS WITH LAW ENFORCEMENT FOR ME OR ANYONE OPERATING THIS VEHICLE. *JB
NHTSA ODI #10168808
47 miles · Jul 10, 2006
Power Train
WHILE DRIVING DOWN THE HIGHWAY, MY GMC ENVOY XL SHUDDERED THEN STALLED. THE SES LIGHT AND REDUCED POWER LIGHT CAME ON CAUSING AN EXTREME SAFETY HAZARD AS WE WERE ON A HIGHWAY (SPEED LIMIT 65 MPH). THE DEALER, REGAL AUTOMOTIVE IN LAKELAND STATED THAT THE COMPUTER THAT CONTROLS THE DRIVE TRAIN LOST CONTACT WITH THE VEHICLE. THE…
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WHILE DRIVING DOWN THE HIGHWAY, MY GMC ENVOY XL SHUDDERED THEN STALLED. THE SES LIGHT AND REDUCED POWER LIGHT CAME ON CAUSING AN EXTREME SAFETY HAZARD AS WE WERE ON A HIGHWAY (SPEED LIMIT 65 MPH). THE DEALER, REGAL AUTOMOTIVE IN LAKELAND STATED THAT THE COMPUTER THAT CONTROLS THE DRIVE TRAIN LOST CONTACT WITH THE VEHICLE. THEY INFORMED US THAT THIS IS A COMMON PROBLEM WITH THE ENVOY AND THAT THEY HAVE A SERVICE BULLETIN FOR A PROGRAM UPDATE. HOWEVER, NO RECALL HAVE BEEN ISSUED. *JB
NHTSA ODI #10161961
14,500 miles · May 14, 2006
Service Brakes, Hydraulic
GMC 2004 ENVOY XL SUV HAS REPEATED STOPPING PROBLEMS AT LOW SPEED. BRAKE PEDDLE HAS EXCESSIVE TRAVEL AND COAST THROUGH STOP SIGNS AT LOW SPEED. EXPERIENCED NEAR MISSES WITH CARS IN PARKING LOTS. BRAKE PEDDLE COLLAPSES TO FLOOR AT STOP LIGHTS AND SIGNS WHEN STOPPED. FALSE ABS ACTIVATION ON DRY PAVEMENT. *NM
NHTSA ODI #10157525
17,200 miles · Nov 3, 2005
Power Train
THERE IS AN ISSUE WITH EITHER THE TRANSFER CASE OR TRANSMISSION OF MY 2004 GMC ENVOY XL. ON SEVERAL OCCASIONS, WHILE PERFORMING SLOW MANEUVERS (20 MPH OR LESS) IN AND OUT OF PARKING SPACES OR MAKING SLOWER RIGHT OR LEFT HAND TURNS, THE VEHICLE FEELS AS IF IT IS BEING HELD BACK BY SOMETHING, UNTIL A LOUD CLUNK IS HEARD AS IF A G…
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THERE IS AN ISSUE WITH EITHER THE TRANSFER CASE OR TRANSMISSION OF MY 2004 GMC ENVOY XL. ON SEVERAL OCCASIONS, WHILE PERFORMING SLOW MANEUVERS (20 MPH OR LESS) IN AND OUT OF PARKING SPACES OR MAKING SLOWER RIGHT OR LEFT HAND TURNS, THE VEHICLE FEELS AS IF IT IS BEING HELD BACK BY SOMETHING, UNTIL A LOUD CLUNK IS HEARD AS IF A GEAR DISENGAGES, AND THEN THE VEHICLE JUMPS FORWARD. THIS HAS PROVEN TO BE DANGEROUS TO ME, AS I HAVE FELT MORE THAN ONCE LIKE I HIT SOMETHING. THE VEHICLE ALSO EXPERIENCES VERY HARD DOWNSHIFT, INTO FIRST GEAR AS THE VEHICLE COMES TO A STOP. THIS ISSUE FIRST APPEARED ON THE VEHICLE IN DECEMBER 2004, AND HAS CONTINUED INTERMITTENTLY THROUGH THE CURRENT DATE DATE (FOR MORE THAN 5 SEPARATE INSTANCES).
NHTSA ODI #10141706
NHTSA investigations
4RQ17002 · Loss Of Headlights
Opened Apr 24, 2017 · Closed Mar 29, 2021
Status: closed (inferred from source dates) · Exterior Lighting:headlights
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.
EA07009 · Fuel Pump Module Leaks Gasoline
Opened Jul 10, 2007 · Closed Aug 28, 2008
Status: closed (inferred from source dates) · Fuel System, Gasoline:delivery:fuel Pump
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.
PE05006 · Turn Signal Failures
Opened Feb 4, 2005 · Closed May 6, 2005
Status: closed (inferred from source dates) · Exterior Lighting:turn Signal; Exterior Lighting:turn Signal:flasher Unit; Exterior Lighting:turn Signal:switch
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.
Additional source detail variants (3)
Exterior Lighting:turn Signal:flasher Unit
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.
Exterior Lighting:turn Signal
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.
Exterior Lighting:turn Signal:switch
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.
EA04021 · Brake Lamp Failure
Opened Aug 3, 2004 · Closed Nov 4, 2004
Status: closed (inferred from source dates) · Exterior Lighting:brake Lights
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.
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