NHTSA owner reports · September 18, 2026 snapshot.
Fuel System, Other complaints
95 reportsClear category filterMileage unknown · Jan 15, 2009
Exterior LightingFuel System, OtherInterior Lighting
MASSIVE ELECTRICAL PROBLEMS WITH CHEVY TRAILBLAZER 1. WHILE GOING 10 MILES AN HOUR, THE SPEEDOMETER JUMPS TO 120MPH THEN TO 50MPH THEN TO 120MPH AGAIN. 2. WHEN I FILL UP WITH GAS, THE GAS GAUGE STATES THAT THE TANK IS STILL EMPTY THEN MOVES TO FULL THEN TO A 1/4 THEN TO FULL THEN TO HALF ETC... 3. WHILE DRIVING AT NIGHT, …
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MASSIVE ELECTRICAL PROBLEMS WITH CHEVY TRAILBLAZER 1. WHILE GOING 10 MILES AN HOUR, THE SPEEDOMETER JUMPS TO 120MPH THEN TO 50MPH THEN TO 120MPH AGAIN. 2. WHEN I FILL UP WITH GAS, THE GAS GAUGE STATES THAT THE TANK IS STILL EMPTY THEN MOVES TO FULL THEN TO A 1/4 THEN TO FULL THEN TO HALF ETC... 3. WHILE DRIVING AT NIGHT, MY HEADLIGHTS GO HIGHBEAM TO LOW BEAM AS IF I AM MANUALLY FLASHING MY LIGHTS AT OTHER CARS. I HAVE READ ON THE INTERNET WHERE THIS IS HAPPENING TO MANY MANY PEOPLE WITH THIS SAME MODEL OF CHEVROLET SUV AND THAT GM REFUSES TO DO ANYTHING ABOUT THIS. -I CALLED GM AND ADVISED THEM OF THE ENTIRE ISSUE. THEY ADVISED ME TO GO TO A DEALERSHIP AND HAVE THEM RUN A DIAGNOSTIC AS THIS WAS NEEDED BEFORE THEY COULD HELP ME. -I WENT TO THE DEALER AND PAID $115 FOR THE DIAGNOSTIC, NEEDLESS TO SAY THE REPAIRS THAT THE DEALER FOUND RANGER OVER $3000.00 DOLLARS. -I THEN CALLED GM BACK AND THEY TOOK THE INFORMATION THAT THE DEALER GAVE ME (DONNA AT 1-866-790-5700 X21153) -I JUST GOT A CALL BACK FROM GM STATING THAT BECAUSE OF THE MILEAGE ON THE SUV THAT THEY WERE NOT GOING TO DO ANYTHING (THEY KNEW ABOUT THE MILEAGE BEFORE THEY SENT ME TO THE DEALERSHIP!). SO I WASTED $115 DOLLARS FOR SOMETHING THAT WAS NOT NEEDED BY GM, AND THE FACT THAT THEY KNEW ABOUT THE MILEAGE TO START OFF WITH IS A WAY TO LET THE DEALER MAKE SOME MONEY OFF THE CONSUMER. *TR
NHTSA ODI #10255220
80,000 miles · Jan 1, 2009
Fuel System, Other
FUEL READING IS ALWAYS ON EMPTY EVEN AFTER I FILL UP. I CAN EASILY RUN OUT OF GAS WITH OUT EVEN KNOWING. *TR
NHTSA ODI #10253421
100,308 miles · Dec 15, 2008
Fuel System, Other
TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE FUEL GAUGE DOES NOT WORK AND ALWAYS REGISTERS ZERO. WHENEVER HE FILLS UP THE GAS TANK, THE FUEL GAUGE DIAL DOES NOT MOVE FROM EMPTY TO FULL. THE DIAL REMAINS ON EMPTY AND THE FUEL LIGHT IS CONSTANTLY ILLUMINATED. THE CONTACT FOUND NUMEROUS COMPLAIN…
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TL*THE CONTACT OWNS A 2005 CHEVROLET TRAILBLAZER. THE CONTACT STATED THAT THE FUEL GAUGE DOES NOT WORK AND ALWAYS REGISTERS ZERO. WHENEVER HE FILLS UP THE GAS TANK, THE FUEL GAUGE DIAL DOES NOT MOVE FROM EMPTY TO FULL. THE DIAL REMAINS ON EMPTY AND THE FUEL LIGHT IS CONSTANTLY ILLUMINATED. THE CONTACT FOUND NUMEROUS COMPLAINTS FROM OTHER CONSUMERS WHO EXPERIENCED THE SAME PROBLEM. HOWEVER, THE DEALER HAS NOT BEEN NOTIFIED. THE FAILURE MILEAGE WAS 100,000. UPDATED 01/07/09. *LJ UPDATED 01/08/09. *JB
NHTSA ODI #10251782
Mileage unknown · Nov 9, 2008
Fuel System, Other
GAS GAUGE DOESN'T READ CORRECTLY. WHEN I FILL UP THE GAS GAUGE IT WILL STAY ON EMPTY AND THE LIGHT WILL STAY ON. AFTER DRIVING FOR A DAY OR SO THE GAS GAUGE WILL FLUCTUATE FROM EMPTY TO FULL NUMEROUS TIMES. I KEEP TRACK OF MY MILES TO KNOW WHEN TO FILL UP AND NEVER KNOW HOW MUCH GAS I HAVE. THERE ARE NUMEROUS COMPLAINTS SIMI…
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GAS GAUGE DOESN'T READ CORRECTLY. WHEN I FILL UP THE GAS GAUGE IT WILL STAY ON EMPTY AND THE LIGHT WILL STAY ON. AFTER DRIVING FOR A DAY OR SO THE GAS GAUGE WILL FLUCTUATE FROM EMPTY TO FULL NUMEROUS TIMES. I KEEP TRACK OF MY MILES TO KNOW WHEN TO FILL UP AND NEVER KNOW HOW MUCH GAS I HAVE. THERE ARE NUMEROUS COMPLAINTS SIMILAR TO MY PROBLEM. GO TO HTTP://WWW.TOPIX.COM/FORUM/AUTOS/CHEVROLET-TRAILBLAZER/TH8JI6TEPO3VRJI3D/P2. I ONLY READ 20 COMPLAINTS AND OF COURSE THERE ARE MANY MORE TO READ. PLEASE HAVE THIS PROBLEM KNOWN AND FIXED SINCE IT ISN'T UNDER RECALL. *TR
NHTSA ODI #10248060
78,000 miles · Sep 27, 2008
Electrical SystemFuel System, Other
SPEEDOMETER MALFUNCTIONING (NEED INSTRUMENT PANEL CLUSTER) FUEL LEVEL SYSTEM MALFUNCTIONING. *TR
NHTSA ODI #10243609
45,000 miles · Aug 17, 2008
Fuel System, Other
MY FUEL GAUGE INDICATOR LIGHT REMAINS ON INDICATING LOW FUEL. AT FIRST WHEN I WOULD FILL THE TANK THE GAUGE WOULD SHOOT TO 'E' AND THEN WOULD READY PROPERLY AFTER DRIVING 20-30 MILES. NOW, THE GAUGE REMAINS ON 'E' WITH THE INDICATOR LIGHT ON INDICATING LOW FUEL REGARDLESS TO ME FILLING UP MY TANK. I HAVE NO WAY OF TELLING HOW MU…
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MY FUEL GAUGE INDICATOR LIGHT REMAINS ON INDICATING LOW FUEL. AT FIRST WHEN I WOULD FILL THE TANK THE GAUGE WOULD SHOOT TO 'E' AND THEN WOULD READY PROPERLY AFTER DRIVING 20-30 MILES. NOW, THE GAUGE REMAINS ON 'E' WITH THE INDICATOR LIGHT ON INDICATING LOW FUEL REGARDLESS TO ME FILLING UP MY TANK. I HAVE NO WAY OF TELLING HOW MUCH FUEL IS IN MY VEHICLE AT ANY GIVEN TIME. THIS IS A HAZARD TO MYSELF AND MY FAMILY WITH THE CONSTANT WONDERING IF TODAY WILL BE THE DAY I RUN OUT OF GAS. THIS IS ALSO COSTING ME MORE TO KEEP PUTTING GAS IN MY VEHICLE TO MAKE SURE I HAVE ENOUGH TO CARRY OUT MY DAILY AFFAIRS. *TR
NHTSA ODI #10238588
41,000 miles · Aug 13, 2008
Fuel System, Other
I AM THE OWNER OF A 2005 CHEVROLET TRAILBLAZER. MY VEHICLE HAS RECENTLY REACHED 41,000 MILES., AND THE GAS GAUGE HAS STARTED FLOATING. I USUALLY DO A FILL UP AT LEAST ONCE A WEEK. NO MATTER WHAT LEVEL THE GAS IS AT, THE GAUGE DOES NOT READ PROPERLY. AT THIS POINT, I HAVE TO MAINTAIN MORE THAN A HALF OF A TANK OF GAS. IF I DON'T,…
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I AM THE OWNER OF A 2005 CHEVROLET TRAILBLAZER. MY VEHICLE HAS RECENTLY REACHED 41,000 MILES., AND THE GAS GAUGE HAS STARTED FLOATING. I USUALLY DO A FILL UP AT LEAST ONCE A WEEK. NO MATTER WHAT LEVEL THE GAS IS AT, THE GAUGE DOES NOT READ PROPERLY. AT THIS POINT, I HAVE TO MAINTAIN MORE THAN A HALF OF A TANK OF GAS. IF I DON'T, THE NEEDLE FLOATS OVER TO "E" CAUSING MY LOW FUEL LIGHT TO COME ON. I KNOW A FEW OTHERS WHO OWN A CHEVY TRAILBLAZER WHO ARE HAVING THE SAME ISSUE. HOWEVER, I HAVE BEEN TOLD BY CHEVY THAT THIS IS NOT A RECALL ISSUE. *TR
NHTSA ODI #10238004
Mileage unknown · Aug 12, 2008
Electrical SystemFuel System, Other
I OWN A 2005 TRAILBLAZER. ITS A GREAT VEHICLE BUT PROBLEM'S OF GREAT CONCERN HAVE RISEN. I WOULD LIKE TO PETITION TO HAVE CHEVROLET TO DISPLAY A CAMPAIGN FOR THE RECALL AND CORRECTION OF A FUEL GAGE PROBLEM WHICH MYSELF AND MANY,MANY TRAILBLAZER OWNERS ARE HAVING. IT INVOLVES THE FUEL GAGE NOT FUNCTIONING PROPERLY DISPLAYING EMP…
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I OWN A 2005 TRAILBLAZER. ITS A GREAT VEHICLE BUT PROBLEM'S OF GREAT CONCERN HAVE RISEN. I WOULD LIKE TO PETITION TO HAVE CHEVROLET TO DISPLAY A CAMPAIGN FOR THE RECALL AND CORRECTION OF A FUEL GAGE PROBLEM WHICH MYSELF AND MANY,MANY TRAILBLAZER OWNERS ARE HAVING. IT INVOLVES THE FUEL GAGE NOT FUNCTIONING PROPERLY DISPLAYING EMPTY AND OR A VARIETY OF LEVELS OF THE FUEL TANK. THE AMOUNT OF COMPLAINTS WHICH I HAVE FOUND ON THE INTERNET OF TRAILBLAZER OWNERS SHOULD WARRANT AN ACTION FROM CHEVROLET TO REPAIR THE PROBLEM WITH NO COSTS TO THE OWNERS OF THESE VEHICLES. PLEASE INVESTIGATE AND YOU WILL SEE THE SITUATION. I HOPE AN ACTION TO CORRECT IS THE RESPONSIBILITY OF CHEVROLET BECAUSE IT IS DEFINITELY AN DESIGN ISSUE. WHY DO THE OWNERS HAVE TO PAY SOMETHING THAT IS NOT FUNCTIONING PROPERLY AND DEFINITELY AN ISSUE FROM THE MANUFACTURER. THE OTHER ISSUE IS VERY SERIOUS. THE DOORS LOCK AUTOMATICALLY WHEN THE VEHICLE IS NOT IN DRIVE OR THE ENGINE IS RUNNING. CASE IN POINT, MY WIFE STOPPED AT THE SERVICE STATION TO FILL UP WITH FUEL,LEFT THE KEYS IN THE IGNITION CLOSE THE DOOR AND STARTED TO FUEL UP. PART WAY IN THE FILLING AS SHE STOOD THERE OUTSIDE OF THE VEHICLE,HER PURSE INSIDE ON THE SEAT AND THE DOORS LOCKED ON THEIR OWN. SHE THEN HAD TO BARROW SOMEONE'S CELL PHONE TO CALL ON-STAR TO UNLOCK THE DOORS. I DID NOT THINK MUCH ON IT AND THOUGHT SHE HAD DID SOMETHING TO TRIGGER THE ACTION. WELL ONE DAY I WAS IN THE SITTING TRUCK AND WAITING FOR MY WIFE. I HAVE THE KEY IN THE IGNITION,THE ENGINE NOT RUNNING AND THEN THE DOORS LOCKED BY THEMSELVES. I DID NOTHING TO TRIGGER THIS. NOW I BELIEVE THERE IS SOMETHING VERY WRONG. THIS LOCKING BY THEMSELVES WILL BE VERY SERIOUS IF A MOTHER HAS AN CHILD OR INFANT INSIDE THE VEHICLE AND HE OR SHE IS POSSIBLY GETTING FUEL OR SOMETHING. WHAT IF THIS HAPPENED AND THE CHILD OR INFANT STARTED CHOKING OR CONVULSIONS OR A VERY HOT DAY AND HELP IS MANY MINUTES AWAY. DOES CHEVROLET NOT CARE? *TR
NHTSA ODI #10237933
Mileage unknown · Jun 10, 2008
Fuel System, Other
I HAVE A 2005 CHEVY TRAILBLAZER AND I NOTICED THE FUEL GAUGE WAS SHOWING EMPTY THE LAST TWO MONTHS. AT FIRST IT WOULD SHOW EMPTY AND A FEW MINUTES LATER IT WOULD SHOW THE CORRECT READING. NOW IT REMAINS ON EMPTY AND IF THE GAUGE DOES MOVE IT ONLY GOES AS FAR AS 1/4 TANK FULL, IF THAT. I HAVE YET TO TAKE THE CAR IN TO THE DEALERS…
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I HAVE A 2005 CHEVY TRAILBLAZER AND I NOTICED THE FUEL GAUGE WAS SHOWING EMPTY THE LAST TWO MONTHS. AT FIRST IT WOULD SHOW EMPTY AND A FEW MINUTES LATER IT WOULD SHOW THE CORRECT READING. NOW IT REMAINS ON EMPTY AND IF THE GAUGE DOES MOVE IT ONLY GOES AS FAR AS 1/4 TANK FULL, IF THAT. I HAVE YET TO TAKE THE CAR IN TO THE DEALERSHIP AS I HAVE NOTICED THAT THERE ARE MANY MORE VEHICLES OF THE SAME MODEL AND TYPE THAT ARE HAVING THE SAME PROBLEMS. *TR
NHTSA ODI #10230405
38,000 miles · Jan 28, 2008
Fuel System, Other
FUEL GAGE HAS FAILED AND DOES NOT WORK... FAILED AT 38000 MILES... PURCHASED CAR DECEMBER 2005 WITH 13,500 MILES FROM DEALER...CURRENT OWNERSHIP TWO YEARS... LOW FUEL LIGHT STAYS ON EVEN WHEN TANK FILLED...GAGE WILL SOMETIMES VARY BETWEEN "E" AND 3/4 FULL... MOST OF THE TIME STAYING ON "E", ...ABSOLUTELY CANNOT TELL HOW MUCH GA…
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FUEL GAGE HAS FAILED AND DOES NOT WORK... FAILED AT 38000 MILES... PURCHASED CAR DECEMBER 2005 WITH 13,500 MILES FROM DEALER...CURRENT OWNERSHIP TWO YEARS... LOW FUEL LIGHT STAYS ON EVEN WHEN TANK FILLED...GAGE WILL SOMETIMES VARY BETWEEN "E" AND 3/4 FULL... MOST OF THE TIME STAYING ON "E", ...ABSOLUTELY CANNOT TELL HOW MUCH GAS IS IN CAR FROM THE GAGE. MORE THAN ONE PERSON DRIVES THE CAR AND IT IS GOING TO LEAVE SOMEONE FROM MY FAMILY STRANDED ON THE ROAD AT SOME POINT. I WENT TO THE DEALER AND COMPLAINED AND WAS TOLD THAT IT WOULD COST BETWEEN $350 AND $500 TO REPAIR, THAT THE FUEL SENDING UNIT HAS FAILED...THAT GAS TANK WOULD HAVE TO BE DROPPED TO REPLACE ... HOWEVER "JUST KEEP DRIVING THE CAR UNTIL THE FUEL PUMP FAILS AND REPLACE THE PUMP AND THE SENDING UNIT ASSEMBLY AT THAT TIME, SAVING THE EXTRA COST..." "KEEP TRACK OF YOUR MILEAGE"...WHICH VARIES BETWEEN CITY AND HIGHWAY DRIVING... NOT EXACTKY WHAT I WANT TO HEAR!!! *CN
NHTSA ODI #10216245
NHTSA investigations
2RQ17002 · 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.
DP10001 · Fuel Level Gauge System Failure
Opened Jan 7, 2010 · Closed May 23, 2011
Status: closed (inferred from source dates) · Fuel System, Other; Fuel System, Other:storage:fuel Gauge System
The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than what is actually in the fuel tank. One complaint alleged a vehicle crash after the vehicle stalled while exiting the interstate, became disabled, and was struck from behind.Summarily, the complaints show an apparent increasing trend, with most complaints received within the past year.A Preliminary Evaluation has been opened to assess the scope, frequency and potential safety consequences associated with the alleged defect.
Additional source detail variants (2)
Fuel System, Other
The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than what is actually in the fuel tank. One complaint alleged a vehicle crash after the vehicle stalled while exiting the interstate, became disabled, and was struck from behind.Summarily, the complaints show an apparent increasing trend, with most complaints received within the past year.A Preliminary Evaluation has been opened to assess the scope, frequency and potential safety consequences associated with the alleged defect.
Fuel System, Other:storage:fuel Gauge System
The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than what is actually in the fuel tank. One complaint alleged a vehicle crash after the vehicle stalled while exiting the interstate, became disabled, and was struck from behind.Summarily, the complaints show an apparent increasing trend, with most complaints received within the past year.A Preliminary Evaluation has been opened to assess the scope, frequency and potential safety consequences associated with the alleged defect.