NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
164 reportsClear category filter83,000 miles · Nov 7, 2013
Electrical SystemExterior LightingVisibility
I HAVE BEEN READING MANY OF THESE POST. I CAN'T BELIEVE ALL OF THE THINGS THAT HAVE ALSO HAPPENED TO MY ENVOY. I HAVE HAD MY BACK WINDOW BLOW OUT WHILE DRIVING, THANK GOD THAT BOTH OF MY KIDS THAT WERE IN THE BACK SEAT WERE NOT HURT, THEY WERE JUST SCARED AND STILL ASK IF IT WILL HAPPEN AGAIN. I ALSO RECENTLY JUST HAD TO HAVE A…
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I HAVE BEEN READING MANY OF THESE POST. I CAN'T BELIEVE ALL OF THE THINGS THAT HAVE ALSO HAPPENED TO MY ENVOY. I HAVE HAD MY BACK WINDOW BLOW OUT WHILE DRIVING, THANK GOD THAT BOTH OF MY KIDS THAT WERE IN THE BACK SEAT WERE NOT HURT, THEY WERE JUST SCARED AND STILL ASK IF IT WILL HAPPEN AGAIN. I ALSO RECENTLY JUST HAD TO HAVE A PIECE ON THE GAS LINE FIXED WHICH WAS ALMOST $900.00 MONEY THAT I DIDN'T HAVE AND HAD TO BORROW. I AM STILL PAYING IT BACK. NOW AS FOR LAST NIGHT MY LOW BEAMS ARE NOT WORKING, I BOUGHT NEW BULBS AND THAT DIDN'T WORK, SO IT IS BACK TO THE MECHANIC. OH AND I HAVE A CHECK ENGINE LIGHT THAT GOES ON AND OFF. THEY REALLY NEED TO GET ON ALL OF THESE THINGS. IT WOULD BE NICE TO HAVE THE CAR WORKING THE WAY IT SHOULD BE. I MAY JUST PRINT THESE THINGS UP AND BRING TO THE GMC SHOP AND SEE WHAT THE CAN DO ABOUT IT. I MEAN I REALLY TO LOVE MY SUV BUT THIS IS CRAZY. I AM NOW KIND OF SCARED TO HAVE MY KIDS IN THE CAR. *TR
NHTSA ODI #10551421
100,000 miles · Oct 29, 2013
Electrical SystemExterior LightingFuel System, Gasoline
HEADLIGHTS STOPPED WORKING, SPEEDOMETER STOPPED WORKING, FUEL GAUGE STOPPED WORKING, VOLTMETER GAUGE STOPPED WORKING. *TR
NHTSA ODI #10549982
140,000 miles · Jun 28, 2013
Electrical SystemEngine
THE "CHECK GAUGES" LIGHT FLASHES FOLLOWED BY "LOW OIL PRESSURE" FOLLOWED BY "STOP ENGINE" AND THE ENGINE STALLS. EACH TIME THIS HAPPENS THE AC HAS BEEN ON. SENT TO DEALER AND THEY WERE UNABLE TO REPRODUCE THIS ISSUE. HAS HAPPENED 3 TIMES NOW. VERY SCARY. *TR
NHTSA ODI #10522325
42,000 miles · Jun 1, 2013
Electrical SystemEngineStructureFire
WHILE DRIVING ANOTHER MOTORIST SAW SMOKE COMING FROM REAR OF VEHICLE AND GOT VEHICLE STOPPED ON SIDE OF ROAD AT WHICH TIME THE ENGINE COMPARTMENT WAS ENGULFED IN FLAMES. CALLED FIRE DEPT AND POLICE. FIRE SPREAD THROUGH THE HEARER BOX INTO THE VEHICLE AND ACROSS DASH UNTIL IT BEGAN BURNING THE HEADLINER. FIRE DEPT PUT OUT FIRE B…
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WHILE DRIVING ANOTHER MOTORIST SAW SMOKE COMING FROM REAR OF VEHICLE AND GOT VEHICLE STOPPED ON SIDE OF ROAD AT WHICH TIME THE ENGINE COMPARTMENT WAS ENGULFED IN FLAMES. CALLED FIRE DEPT AND POLICE. FIRE SPREAD THROUGH THE HEARER BOX INTO THE VEHICLE AND ACROSS DASH UNTIL IT BEGAN BURNING THE HEADLINER. FIRE DEPT PUT OUT FIRE BUT WAS A TOTAL LOSS. THERE WAS NO INDICATION ON INSTRUMENT PANEL OF ANY PROBLEMS (ALL GAUGES SHOWING NORMAL READINGS). *TR
NHTSA ODI #10514669
120,000 miles · Feb 22, 2013
Electrical System
THE SPEEDOMETER BEGINS TO GIVE FAULTY READINGS. AT FIRST IT WAS REPORTING APPROXIMATELY 20 MILES PER HOUR UNDER ACTUAL SPEED. THIS ALMOST CAUSED A CRASH DUE TO EXCESSIVE UNKNOWN SPEED. IN THE LAST FEW DAYS THE SPEEDOMETER STARTS AT 60 MPH AND IS OFF BY APPROXIMATELY THE SAME AMOUNT SO WHEN TRAVELING 50 MPH THE SPEEDOMETER REA…
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THE SPEEDOMETER BEGINS TO GIVE FAULTY READINGS. AT FIRST IT WAS REPORTING APPROXIMATELY 20 MILES PER HOUR UNDER ACTUAL SPEED. THIS ALMOST CAUSED A CRASH DUE TO EXCESSIVE UNKNOWN SPEED. IN THE LAST FEW DAYS THE SPEEDOMETER STARTS AT 60 MPH AND IS OFF BY APPROXIMATELY THE SAME AMOUNT SO WHEN TRAVELING 50 MPH THE SPEEDOMETER READS 110 MPH. THIS IS A MASSIVE SAFETY ISSUE AND THERE ARE NUMEROUS REPORTS ABOUT THIS YET NO RECALLS. HOW MANY PEOPLE MUST BE INJURED OR KILLED BEFORE YOU TAKE ACTION. *TR
NHTSA ODI #10499640
68,000 miles · Feb 6, 2013
Electrical System
ONE DAY ALL MY GAUGES MAY WORK I MIGHT SHUT THE SUV OFF AND START IT AGAIN AND NO GAUGES WILL WORK (SPEED,OIL PRESSURE,BATTERY,GAS,ODOMETER,TACH) WHEN ONE WORKS THEY ALL WORK WHEN ONE DOESN'T WORK NONE OF THEM WORK AND YOU NEVER KNOW WHEN THEY WILL DO WHAT THEY DO. *TR
NHTSA ODI #10496675
102,000 miles · Aug 23, 2012
Electrical SystemLatches/locks/linkagesVisibility/wiper
LOCK COMPLETELY OUT OF BACK HATCH WIRE ACTS AS IF IT HAS A SHORT WHICH SHUTS THE WHOLE BACK DOWN I AM UNABLE TO USE MY REAR WIPER AT ALL INTERFERE WITH MY STEROE SHUTTING OF WHEN U TURN OFF ENVOY WHEN IT SHOULDN'T HAVE BEEN LOCKED COMPLETELY OUT OF THE REAR BOTTOM AND THE GLASS HATCH I DO NOT USE MY HATCH NOW BECAUSE I DON'T WAN…
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LOCK COMPLETELY OUT OF BACK HATCH WIRE ACTS AS IF IT HAS A SHORT WHICH SHUTS THE WHOLE BACK DOWN I AM UNABLE TO USE MY REAR WIPER AT ALL INTERFERE WITH MY STEROE SHUTTING OF WHEN U TURN OFF ENVOY WHEN IT SHOULDN'T HAVE BEEN LOCKED COMPLETELY OUT OF THE REAR BOTTOM AND THE GLASS HATCH I DO NOT USE MY HATCH NOW BECAUSE I DON'T WANT TO BE LOCKED OUT AGAIN IT HAS HAPPEN TWICE AND THIS NOT UNDER WARRANTY HAVE SEEN OTHE COMPLAINTS ONLINE DUE TO SAME ISSUES HAS THERE BEEN A RECALL ON THIS I HAVE ONLY HAD THIS ENVOY FOR 4 MONTHS AND TO BE HONEST I THINK IT MESSES WITH THE AIR I HAVE DUEL AIR AND THE PASSENGER SIDE GETS COLDER QUICKER THAN THE DRIVER AND NEVER SEEMED TO DO THIS UNTILL THE WIRES G STARTED MESSING UP IN THE REAR. *TR
NHTSA ODI #10472113
60,000 miles · Aug 3, 2012
Electrical System
TL* THE CONTACT OWNS A 2004 GMC ENVOY. THE CONTACT STATED THAT THE FUEL GAUGE MALFUNCTIONED AND AS A RESULT, IT WAS PROVIDING AN ERRONEOUS FULL READING WHEN THE FUEL TANK WAS ACTUALLY EMPTY. THE CONTACT ALSO MENTIONED THAT THE SPEEDOMETER AND TEMPERATURE GAUGE FAILED. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE MANUFACTURER WAS…
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TL* THE CONTACT OWNS A 2004 GMC ENVOY. THE CONTACT STATED THAT THE FUEL GAUGE MALFUNCTIONED AND AS A RESULT, IT WAS PROVIDING AN ERRONEOUS FULL READING WHEN THE FUEL TANK WAS ACTUALLY EMPTY. THE CONTACT ALSO MENTIONED THAT THE SPEEDOMETER AND TEMPERATURE GAUGE FAILED. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE WHO DID NOT OFFER ANY ASSISTANCE SINCE THE VEHICLE WAS NOT INCLUDED IN ANY RECALLS. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 60,000 AND THE CURRENT MILEAGE WAS 90,000. UPDATED 09/11/12*LJ THE CONSUMER STATED THE VEHICLE HAS RAN OUT OF GAS SEVERAL TIMES DUE TO THE FAILURE WITH THE GAS GAUGE. THE ENGINE CHECK LIGHT ILLUMINATES FOR NO APPARENT REASON. THE CONSUMER HAS ALSO RECEIVED A TICKET DUE TO THE ODOMETER READING A FALSE SPEED. UPDATED 09/13/2012 *JS
NHTSA ODI #10469141
130,000 miles · Jul 7, 2012
Electrical SystemEngineStructure
ENGINE STALLS WHEN YOU SLOW DOWN AND THE AIR CONDITIONER OR WIDOW DEFOGGER IS ON . I HAVE ALSO HAD POWER SURGING. I HAD TO REPLACE THE MAP SENSOR TWICE AND THE BRACKET AND IT IS STILL SHOWING BAD. I ALSO REPLACE THE CAM SHAFT POSITION SENSOR AND THE THERMOSTAT. ALSO THE WIPER ON THE REAR WILL NOT SPRAY ANY WATER OR WASHER. *TR
NHTSA ODI #10464560
51,000 miles · Jun 25, 2012
Electrical System
FUEL GAUGE VARIES WILDLY FROM EMPTY TO FULL . BAD PLACE TO RUN OUT OF GAS ON I, 95 IN THE FAST LANE. *TR
NHTSA ODI #10463079
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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