NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,081 reports29,000 miles · May 16, 2009
Electrical System
I OWN A 2004 CHEVY TRAILBLAZER WHICH STARTED GIVING ME PROBLEMS ALMOST AS SOON AS THE WARRANTY WAS OVER. MOST OF THE GAUGES (SPEEDOMETER, TACHOMETER, BATTERY INDICATOR, ETC...) IN THE INSTRUMENT PANEL ARE NOT FUNCTIONING OR FUNCTION ONLY SPORADICALLY AND ERRATICALLY. ALSO THE AIR BAG LIGHT STAYS ON CONTINUOUSLY. I HAVE BEEN READ…
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I OWN A 2004 CHEVY TRAILBLAZER WHICH STARTED GIVING ME PROBLEMS ALMOST AS SOON AS THE WARRANTY WAS OVER. MOST OF THE GAUGES (SPEEDOMETER, TACHOMETER, BATTERY INDICATOR, ETC...) IN THE INSTRUMENT PANEL ARE NOT FUNCTIONING OR FUNCTION ONLY SPORADICALLY AND ERRATICALLY. ALSO THE AIR BAG LIGHT STAYS ON CONTINUOUSLY. I HAVE BEEN READING ONLINE THAT THIS IS A FAIRLY COMMON PROBLEM ON THIS VEHICLE AND THAT GM EVEN SUED (AND WON) THE INSTRUMENT PANEL MANUFACTURER. HOWEVER NO RECALL HAS BEEN ISSUED ON TRAILBLAZERS, MEANWHILE OTHER GM VEHICLES (I.E. CHEVY SILVERADO) THAT USES THE SAME INSTRUMENT PANEL AND THEREBY HAS THE SAME PROBLEMS HAVE BEEN RECALLED. GENERAL MOTORS SHOULD NOT BE ALLOWED TO EXHIBIT THIS KIND OF BEHAVIOR AND A RECALL SHOULD BE ISSUED TO EVERY VEHICLE THEY BUILT WHICH USED THIS FAULTY AND FAILURE PRONE INSTRUMENT PANEL. SINCERELY, OUTRAGED TRAILBLAZER OWNER. *TR
NHTSA ODI #10268896
40,000 miles · May 12, 2009
Electrical System
THE INSTRUMENT CLUSTER WENT OUT ON MY 04 CHEVY TRAILBLAZER WHICH I PURCHASED NEW AT AROUND 40K. CHEVY WILL DO NOTHING TO HELP AND IN THE MEANTIME I HAVE NO SPEEDOMETER, TACHOMETER, OR GAS GAUGE. *TR
NHTSA ODI #10268538
52,000 miles · May 11, 2009
Engine And Engine Cooling
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CHECK ENGINE LIGHT ILLUMINATED ON THE INSTRUMENT PANEL AND THE CONTACT TOOK THE VEHICLE TO THE DEALER; HOWEVER, THEY COULD NOT DETERMINE THE CAUSE OF THE FAILURE. THE LIGHT HAS BEEN ILLUMINATING EVER SINCE THE VEHICLE WAS PURCHASED, BUT THE FAILURE CANNOT BE LOCATED OR REPA…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CHECK ENGINE LIGHT ILLUMINATED ON THE INSTRUMENT PANEL AND THE CONTACT TOOK THE VEHICLE TO THE DEALER; HOWEVER, THEY COULD NOT DETERMINE THE CAUSE OF THE FAILURE. THE LIGHT HAS BEEN ILLUMINATING EVER SINCE THE VEHICLE WAS PURCHASED, BUT THE FAILURE CANNOT BE LOCATED OR REPAIRED. THROUGH ONLINE RESEARCH, THE CONTACT DISCOVERED NUMEROUS COMPLAINTS REGARDING THE VEHICLE. THE FAILURE MILEAGE WAS 52,000 AND CURRENT MILEAGE WAS 56,000. UPDATED 06/08/09 *BF UPDATED 06/18/09.*JB
NHTSA ODI #10268391
70,000 miles · May 11, 2009
Electrical System
SPEEDOMETER AND TACHOMETER HAVE STOPPED WORKING. *TR
NHTSA ODI #10268355
45,000 miles · May 10, 2009
Electrical SystemExterior Lighting
HEADLIGHTS DIM AND FLICKER AT RANDOM TIMES, MOSTLY AT START UP. DEALER HAS REPLACED ALTERNATOR TWICE AND PROBLEM WAS RESOLVED FOR ABOUT 2 MONTHS AND HAS SINCE RECURRED. *TR
NHTSA ODI #10268320
80,000 miles · May 8, 2009
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE INSTRUMENT PANEL GAUGES FAILED WITHOUT WARNING AND DISPLAYED INACCURATE READINGS. THE DEALER STATED THAT THE ENTIRE PANEL NEEDED TO BE REPLACED. HE IS IN THE PROCESS OF HAVING THE VEHICLE REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 80,000.
NHTSA ODI #10268255
54,000 miles · May 8, 2009
Electrical System
INSTRUMENT CLUSTER FAILURE. SPEEDOMETER & ALL OTHER GAUGES SUDDENLY FAILED. NO SPEED OR VEHICLE INFORMATION AVAILABLE TO DRIVER. *TR
NHTSA ODI #10268224
57,210 miles · May 7, 2009
Electrical System
I HAVE NOTICED MY 2004 CHEVY TRAILBLAZER IS HAVING ISSUES WITH THE TACHOMETER. IT IS STICKING AT AROUND 4000 RPM AND WON'T RESET TO 0. THIS SEEMS TO BE A VERY COMMON COMPLAINT FROM WHAT I CAN FIND. I'M AFRAID THAT THIS PROBLEM COULD SPREAD INTO OTHER GAUGES WHICH WOULD BE A SERIOUS SAFETY ISSUE. *TR
NHTSA ODI #10267971
Mileage unknown · May 6, 2009
Electrical System
MY 2004 TRAILBLAZER SPEEDOMETER KEEPS GOING OUT. I HAVE HAD IT RESET SEVERAL TIMES AND WITHIN A FEW DAYS IT IS BACK TO THE NEEDLE POINTING AT 100 WHILE IN PARK. THIS PROBLEM STARTED WHILE I WAS DRIVING THE VEHICLE. I NOTICED IT WHEN I REALIZED THAT I WAS THE SLOWEST PERSON ON THE INTERSTATE. IT IS MAY 2009 AND IT IS NOW A BIGGER…
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MY 2004 TRAILBLAZER SPEEDOMETER KEEPS GOING OUT. I HAVE HAD IT RESET SEVERAL TIMES AND WITHIN A FEW DAYS IT IS BACK TO THE NEEDLE POINTING AT 100 WHILE IN PARK. THIS PROBLEM STARTED WHILE I WAS DRIVING THE VEHICLE. I NOTICED IT WHEN I REALIZED THAT I WAS THE SLOWEST PERSON ON THE INTERSTATE. IT IS MAY 2009 AND IT IS NOW A BIGGER PROBLEM THAN EVER. I WOULD HAVE TO REPLACE THE INSTRUMENT CLUSTER AT 800.00 TO REPAIR THIS AND THEN IT MAY WORK FOR A LITTLE WHILE BUT, ALL MY RESEARCH INDICATES THAT IT WON'T FIX THE PROBLEM. *TR
NHTSA ODI #10267864
130,000 miles · May 6, 2009
Electrical SystemInterior LightingLatches/locks/linkages
DRIVING ON DRY PAVEMENT, CLEAR DAY. TOOK FREEWAY OFFRAMP, WHEN I REACHED 40MPH, THE BRAKES LOCKED UP, WENT PAST STOP SIGN INTO OTHER HIGHWAY MISSING OTHER VEHICLE PASSING IN FRONT OF OFFRAMP. HAPPENED TWICE AT SAME SPEED, BRAKES LOCK UP, AND I PASS THROUGH THE STOP SIGN. LOUD GRINDING NOISE COMING FROM WHEEL WELL AREA, BRAKES…
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DRIVING ON DRY PAVEMENT, CLEAR DAY. TOOK FREEWAY OFFRAMP, WHEN I REACHED 40MPH, THE BRAKES LOCKED UP, WENT PAST STOP SIGN INTO OTHER HIGHWAY MISSING OTHER VEHICLE PASSING IN FRONT OF OFFRAMP. HAPPENED TWICE AT SAME SPEED, BRAKES LOCK UP, AND I PASS THROUGH THE STOP SIGN. LOUD GRINDING NOISE COMING FROM WHEEL WELL AREA, BRAKES RECENTLY CHANGED ABOUT 3 MONTHS AGO, NOISE OCCURS AT 25-30 MPH, SOUNDS LIKE DRAGGING SOMETHING UNDERNEATH. SERVICE MAN CHECKED, NOTHING VISIBLE. HAS OCCURRED 5 TIMES IN LESS THAN 2 MONTHS. INTERIOR LIGHTS DIM ON VEHICLE THEN BRIGHTEN CONSTANTLY. DOOR AJAR LIGHT CONSTANTLY COMING ON, BACK HATCH WINDOW CONSTANTLY OPENING ON OWN DRIVING DOWN ROAD. INSTRUMENT PANEL KNOBS, PANEL ITSELF AND WINDOW AND DOOR BUTTONS ON DOORS EXTREMELY HOT TO TOUCH. VARIOUS LIGHTS ON INSTRUMENT PANEL QUIT WORKING AND THEN RESUME ON THEIR OWN. REPORTED TACH/ODOMETER NOT WORKING ALREADY. BOTH UNITS REGISTERING OFFLINE WHILE DRIVING. WHERE ARE THE FIXES TO THESE PROBLEMS? *TR
NHTSA ODI #10267821
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.
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.
PE04032 · Brake Lamp Failure
Opened Apr 6, 2004 · Closed Aug 3, 2004
Status: closed (inferred from source dates) · Exterior Lighting:brake Lights
THE OFFICE OF DEFECTS INVESTIGATION (ODI) OPENED THIS INVESTIGATION ON MODEL YEAR (MY) 2002-04 CHEVROLET TRAILBLAZER VEHICLES.GM REPORTS THAT OTHER VEHICLES SHARING THIS PLATFORM AND BRAKE LAMP DESIGN ARE THE MY 2002-2004 CHEVROLET TRAILBLAZER EXT; GMC ENVOY, XL, XUV; OLDSMOBILE BRAVADA AND 2004 BUICK RAINIER.COMPLAINTS ALLEGE THAT THE REAR BRAKE LAMP DOES NOT OPERATE WHEN THE BRAKE PEDAL IS DEPRESSED.THERE IS NO INDICATION TO THE DRIVER FROM INSIDE THE VEHICLE THAT ONE OR MORE BRAKE LAMPS BULBS ARE NOT FUNCTIONING.GM FOUND THAT HEAT FROM THE BULB COULD DEFORM THE LAMP SOCKET, PRODUCE ELECTRICAL ARCING AND AN INOPERATIVE BULB.TO CORRECT THE CONDITION, GM CHANGED THE BULB TO A BULB THAT TRANSMITS LESS HEAT TO THE SOCKET AND CHANGED THE SOCKET TO A THERMOPLASTIC POLYMER TO IMPROVE THERMAL STABILITY.THESE CHANGES WERE IMPLEMENTED INTO PRODUCTION VEHICLES ON OCTOBER 1, 2003.GM IMPLEMENTED A SPECIAL POLICY BY NOTIFYING CONSUMERS THAT IF THEY SHOULD EXPERIENCE A BRAKE LAMP FAILURE TO GO TO THEIR GM DEALERSHIP TO HAVE THE CIRCUIT BOARD CONTAINING THE BRAKE LAMP REPLACED ALONG WITH NEW BULBS.THIS POLICY IS GOOD FOR THE FIRST 6 YEARS OR 72,000 MILES OF THE LIFE OF THE VEHICLE.ODI WILL UPGRADE THIS INVESTIGATION TO EA 04-021 AND INCLUDE THE ABOVE MENTIONED VEHICLES.
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