NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
1,081 reports75,000 miles · Feb 28, 2008
Electrical System
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 45 MPH, THE SPEEDOMETER FAILED. THE CONTACT OWNED A PREVIOUS 2003 TRAILBLAZER THAT HAD THE SAME FAILURE. THE DEALER STATED THAT THE ELECTRONIC UNIT WAS FAULTY AND THEY REPLACED THE ENTIRE DASHBOARD AT THE COST OF $1,500 ON THE 2003 TRAILBLAZER. HOWEVER, THE FAIL…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING 45 MPH, THE SPEEDOMETER FAILED. THE CONTACT OWNED A PREVIOUS 2003 TRAILBLAZER THAT HAD THE SAME FAILURE. THE DEALER STATED THAT THE ELECTRONIC UNIT WAS FAULTY AND THEY REPLACED THE ENTIRE DASHBOARD AT THE COST OF $1,500 ON THE 2003 TRAILBLAZER. HOWEVER, THE FAILURE RECURRED. THESE UNITS CAN ONLY BE PURCHASED FROM A CHEVROLET DEALER. THE VIN WAS UNKNOWN. THE CURRENT AND FAILURE MILEAGES WERE 75,000.
NHTSA ODI #10219624
77,500 miles · Feb 25, 2008
Electrical System
2004 TRAILBLAZER SPEEDOMETER FAILURE. THE SPEEDOMETER NEEDLE FAILS TO GO BACK TO ZERO WHILE STOPPED. GM ISSUED A BULLETIN FOR 2003-2004 MODEL YEAR CADILLAC ESCALADE, ESCALADE ESV, AND ESCALADE EXT; CHEVROLET AVALANCHE, SILVERADO, SUBURBAN, AND TAHOE; AND GMC SIERRA, YUKON, AND YUKON XL VEHICLES HAVE REPORTED THAT THE INSTRUMEN…
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2004 TRAILBLAZER SPEEDOMETER FAILURE. THE SPEEDOMETER NEEDLE FAILS TO GO BACK TO ZERO WHILE STOPPED. GM ISSUED A BULLETIN FOR 2003-2004 MODEL YEAR CADILLAC ESCALADE, ESCALADE ESV, AND ESCALADE EXT; CHEVROLET AVALANCHE, SILVERADO, SUBURBAN, AND TAHOE; AND GMC SIERRA, YUKON, AND YUKON XL VEHICLES HAVE REPORTED THAT THE INSTRUMENT PANEL (IP) CLUSTER GAUGES STICK, FLUTTER, OR BECOME INOPERATIVE. HOWEVER, THE 2004 TRAILBLAZER WAS NOT INCLUDED. *TR
NHTSA ODI #10219142
46,540 miles · Feb 23, 2008
Fuel System, Gasoline
CORRODED (LEAKING) METAL ELBOW FROM THE FUEL PUMP MODULE TO THE GAS LINES. FAILURE OF THE METAL ELBOW CAUSED GAS TO BE PUMPED ONTO THE TOP OF FUEL TANK AND SURROUNDING AREAS WHILE DRIVING WITH JUST A HINT OF A GAS SMELL INSIDE THE VEHICLE. THE DEFECTIVE FUEL MODULE WAS REPLACED AT AN INDEPENDENT AUTO REPAIR SHOP. THE TECHNICIAN…
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CORRODED (LEAKING) METAL ELBOW FROM THE FUEL PUMP MODULE TO THE GAS LINES. FAILURE OF THE METAL ELBOW CAUSED GAS TO BE PUMPED ONTO THE TOP OF FUEL TANK AND SURROUNDING AREAS WHILE DRIVING WITH JUST A HINT OF A GAS SMELL INSIDE THE VEHICLE. THE DEFECTIVE FUEL MODULE WAS REPLACED AT AN INDEPENDENT AUTO REPAIR SHOP. THE TECHNICIAN SHOWED ME THE OLD PART AND WHERE IT WAS LEAKING. CORROSION WAS VERY HEAVY ON THE ELBOWS. *TR
NHTSA ODI #10218941
45,000 miles · Feb 22, 2008
Electrical System
IN DECEMBER OF 2007 THE SPEEDOMETER IN '04 TRAILBLAZER WITH 45,000 MILES STOPPED WORKING. IT WORKS ON OCCASION, BUT IS NORMALLY STUCK. I FOUND THIS IS DUE TO FAULTY GAGE CLUSTERS AND IS COMMON ON TRAILBLAZERS. A RECALL WAS RECENTLY MADE ON FULL SIZE CHEVY MODELS WITH THE SAME ISSUE, SO I ASK THAT THE RECALL INCLUDE THE TRAILB…
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IN DECEMBER OF 2007 THE SPEEDOMETER IN '04 TRAILBLAZER WITH 45,000 MILES STOPPED WORKING. IT WORKS ON OCCASION, BUT IS NORMALLY STUCK. I FOUND THIS IS DUE TO FAULTY GAGE CLUSTERS AND IS COMMON ON TRAILBLAZERS. A RECALL WAS RECENTLY MADE ON FULL SIZE CHEVY MODELS WITH THE SAME ISSUE, SO I ASK THAT THE RECALL INCLUDE THE TRAILBLAZER MODEL. THE SPEEDOMETER IS A VITAL INSTRUMENT AND IS NEEDED FOR SAFE DRIVING. I SPENT $75 FOR AN ANALYSIS AND WAS STATED THE WHOLE GAGE CLUSTER WILL NEED TO BE REPLACED FOR $600 AS THE STEPPER MOTORS IN THESE MODELS ARE FAULTY. *TR
NHTSA ODI #10218912
41,000 miles · Feb 22, 2008
Electrical System
2004 CHEVROLET TRAILBLAZER WITH 41000 MILES, SPEEDOMETER AND TACH HAS STOPPED WORKING. *TR
NHTSA ODI #10218907
44,000 miles · Feb 22, 2008
Air BagsCrashInjury
TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 35 MPH, THE CONTACT REAR ENDED A SCHOOL BUS. THE VEHICLE WAS COMPLETELY DESTROYED AND NONE OF THE AIR BAGS DEPLOYED. TWO PASSENGERS WERE INJURED AND A POLICE REPORT WAS FILED. PRIOR TO THE FAILURE, SHE NEVER EXPERIENCED ANY AIR BAG FAILURE. THE DE…
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TL*THE CONTACT OWNS A 2004 CHEVROLET TRAILBLAZER. WHILE DRIVING APPROXIMATELY 35 MPH, THE CONTACT REAR ENDED A SCHOOL BUS. THE VEHICLE WAS COMPLETELY DESTROYED AND NONE OF THE AIR BAGS DEPLOYED. TWO PASSENGERS WERE INJURED AND A POLICE REPORT WAS FILED. PRIOR TO THE FAILURE, SHE NEVER EXPERIENCED ANY AIR BAG FAILURE. THE DEALER AND MANUFACTURER HAVE NOT BEEN NOTIFIED. THE CONTACT HAS PICTURES. THE VIN AND ENGINE SIZE WERE UNKNOWN. THE CURRENT AND FAILURE MILEAGES WERE 44,000.
NHTSA ODI #10218896
49,999 miles · Feb 19, 2008
Electrical System
2003 TRAILBLAZER LTZ SPEEDOMETER INDICATOR STUCK IN THE POST 120MPH POSITION. RESEARCH INDICATES THIS PROCEEDS THE ENTIRE CLUSTER GOING BAD, TACH, OIL, GAS ETC.. CONTACTED GM WHO ARRANGED FOR A DEALER TO PERFORM A DIAGNOSTIC. CONFIRMED BAD CLUSTER. GM ADVISES THIS IS NOT THEIR PROBLEM SO THEY WILL NOT FIX IT. EVEN THOUGH THERE A…
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2003 TRAILBLAZER LTZ SPEEDOMETER INDICATOR STUCK IN THE POST 120MPH POSITION. RESEARCH INDICATES THIS PROCEEDS THE ENTIRE CLUSTER GOING BAD, TACH, OIL, GAS ETC.. CONTACTED GM WHO ARRANGED FOR A DEALER TO PERFORM A DIAGNOSTIC. CONFIRMED BAD CLUSTER. GM ADVISES THIS IS NOT THEIR PROBLEM SO THEY WILL NOT FIX IT. EVEN THOUGH THERE ARE NUMEROUS REPORTS OF BAD CLUSTERS ON OTHER GM MODELS TO INCLUDE THE TB. CLASS ACTION LAWSUIT WORKING IN CA. *TR
NHTSA ODI #10218574
45,000 miles · Feb 18, 2008
Electrical System
2004 CHEVROLET TRAILBLAZER SPEEDOMETER EITHER IS GROSSLY OFF OR FAILS ALTOGETHER. NO PARTICULAR EVENT (MOISTURE, TEMPERATURE, ETC) CAUSES THIS OCCURRENCE. IT COMES AND GOES. *TR
NHTSA ODI #10218463
4,150 miles · Feb 12, 2008
Electrical System
INSTRUMENT PANEL FAILURE. *TR
NHTSA ODI #10217819
32,000 miles · Feb 10, 2008
Electrical System
WHEN EXTERIOR TEMPS ARE APPROXIMATELY 25*F OR BELOW, SPEEDOMETER IS COMPLETELY INOP OR READS EXTREMELY LOW (20-30MPH?) AND WHEN AT A STOP THE SPEEDOMETER WILL DROP WELL BELOW "0"MPH. INSTEAD OF A SMOOTH, FLUID MOVEMENT, NEEDLE IS VERY JERKY AND LAGS. AS THE TRUCK WARMS UP THE SYMPTOMS WILL GRADUALLY DISAPPEAR. IN WARMER OUTSIDE …
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WHEN EXTERIOR TEMPS ARE APPROXIMATELY 25*F OR BELOW, SPEEDOMETER IS COMPLETELY INOP OR READS EXTREMELY LOW (20-30MPH?) AND WHEN AT A STOP THE SPEEDOMETER WILL DROP WELL BELOW "0"MPH. INSTEAD OF A SMOOTH, FLUID MOVEMENT, NEEDLE IS VERY JERKY AND LAGS. AS THE TRUCK WARMS UP THE SYMPTOMS WILL GRADUALLY DISAPPEAR. IN WARMER OUTSIDE TEMPS, THE SPEEDOMETER APPEARS TO WORK NORMALLY. *TR
NHTSA ODI #10217596
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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