NHTSA owner reports · September 18, 2026 snapshot.
Interior Lighting complaints
10 reportsClear category filter93,800 miles · Jun 3, 2010
EquipmentFuel System, GasolineInterior Lighting
CHEVY TRAILBAZER 05... GAS GAUGE KEEPS MOVING FROM LOW TO EMPTY BACK TO FULL,SOMETIMES IT STAYS AT EMPTY. CHECK ENGINE LIGHT STAYS ON. FUEL SENDING UNIT KEEPS FAILING. UNIT WAS REPLACED IN 2007 AT DEALERSHIP. SENDING UNIT HAS GONE BAD AGAIN. VERY EXPENSIVE LABOR NEEDED TO FIX THIS. WHEN I FIXED THE FIRST TIME I HAD WARRANTY NOW…
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CHEVY TRAILBAZER 05... GAS GAUGE KEEPS MOVING FROM LOW TO EMPTY BACK TO FULL,SOMETIMES IT STAYS AT EMPTY. CHECK ENGINE LIGHT STAYS ON. FUEL SENDING UNIT KEEPS FAILING. UNIT WAS REPLACED IN 2007 AT DEALERSHIP. SENDING UNIT HAS GONE BAD AGAIN. VERY EXPENSIVE LABOR NEEDED TO FIX THIS. WHEN I FIXED THE FIRST TIME I HAD WARRANTY NOW IT HAS EXPIRED. I CHECKED ONLINE AND IT SEEMS LIKE EVERYONE WITH A CHEVY TRAILBLAZER IS HAVING THE SAME PROBLEM ALSO MY..TO MY KNOWLEDGE THIS IS A COMPLETELY DEFECT OF THE CAR. MY MAJOR FEAR IS TO RUN OUT OF GAS ON THE HIGHWAY AND MY CAR TO STALL. LEADING TO AN ACCIDENT.....ALSO THE INSTRUMENT PANEL LIGHT KEEP GETTING DARKER..SOMETIMES SEVERAL LIGHTS COME ON. *TR
NHTSA ODI #10334518
37,000 miles · Jan 3, 2010
Exterior LightingInterior Lighting
ALL LIGHTS HEADLIGHTS DASH AND DOME FLICKERING DRIVING BUT NOT EVERYTIME. ALT HAS BEEN RELOCATED 2 TIMES STILL HAVE SAME PROBLEM. *TR
NHTSA ODI #10297911
50,000 miles · Feb 16, 2009
Electrical SystemFuel System, GasolineInterior Lighting
JUST WANT TO ADDRESS THE GAS GAUGE AND SPEEDOMETER ISSUES. I HAVE A 05 TRAILBLAZER AND HAD BOTH OF THESE PROBLEMS. FORTUNATELY I WORK WITH A GREAT DEALERSHIP AND I PURCHASED THE EXTENDED WARRANTY BECAUSE GM WOULD DO NOTHING AND THE FIXES ARE VERY EXPENSIVE. YOU CAN LIVE WITH THE GAS GAUGE NOT READING CORRECTLY BY TRACKING YOUR …
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JUST WANT TO ADDRESS THE GAS GAUGE AND SPEEDOMETER ISSUES. I HAVE A 05 TRAILBLAZER AND HAD BOTH OF THESE PROBLEMS. FORTUNATELY I WORK WITH A GREAT DEALERSHIP AND I PURCHASED THE EXTENDED WARRANTY BECAUSE GM WOULD DO NOTHING AND THE FIXES ARE VERY EXPENSIVE. YOU CAN LIVE WITH THE GAS GAUGE NOT READING CORRECTLY BY TRACKING YOUR MILEAGE BUT THE STUPID BELL GOES OFF ALL THE TIME TELLING YOU YOUR NEAR EMPTY BUT YOU CANNOT DRIVE SAFELY IF YOU DO NOT KNOW HOW FAST YOU ARE GOING AND YOU CERTAINLY CANNOT GO WITH THE FLOW AS EVERYONE SEEMS TO DRIVE FASTER THAN ALLOWED AND I DO NOT THINK THE OFFICER WHO PULLS YOU OVER WILL CARE IF YOUR SPEEDOMETER DOES NOT WORK. I ALSO NOTICE THAT MY INTERIOR PANEL LIGHTS WILL FLASH OFF AND BACK ON AGAIN, MAKES ME THINK I AM SEEING THINGS. I THINK GM NEEDS TO FIND ANSWERS AND FIX THESE PROBLEMS. I LOVE MY TB BUT IT JUST SEEMS LIKE A LEMON AND I WILL LOOK AT SOMETHING DIFFERENT WHEN I PURCHASE AGAIN. *TR
NHTSA ODI #10258782
Mileage 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
45,300 miles · Dec 30, 2008
Electrical SystemExterior LightingInterior Lighting
MY HEADLIGHTS AND DASH LIGHTS FLICKER WHILE DRIVING. ALSO WHILE DRIVING MY LIGHTS WILL DIM AND THE BLOWER FOR HEAT & A/C WILL SLOW AND THEN PICK UP TO NORMAL SPEED AGAIN. IT ALSO REVS BY ITSELF, EVEN IN PARK AND WILL GO FORWARD SLIGHTLY WHEN IT DOES SURGE. THESE PROBLEMS ONLY STARTED AFTER THE ALTERNATOR WAS REPLACED. I THIN…
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MY HEADLIGHTS AND DASH LIGHTS FLICKER WHILE DRIVING. ALSO WHILE DRIVING MY LIGHTS WILL DIM AND THE BLOWER FOR HEAT & A/C WILL SLOW AND THEN PICK UP TO NORMAL SPEED AGAIN. IT ALSO REVS BY ITSELF, EVEN IN PARK AND WILL GO FORWARD SLIGHTLY WHEN IT DOES SURGE. THESE PROBLEMS ONLY STARTED AFTER THE ALTERNATOR WAS REPLACED. I THINK IT IS A SAFETY HAZARD TO HAVE LIGHTS FLICKERING AND ENGINE SURGES. *TR
NHTSA ODI #10253311
57,000 miles · Oct 27, 2008
Electrical SystemExterior LightingInterior Lighting
I HAVE AN 2005 CHEVY TRAILBLAZER THAT THE LIGHTS CONSTANTLY ARE FLASHING. THEY DIM AND THEN COME VERY BRIGHT AGAIN NON-STOP. THIS CAN NOT BE SAFE BECAUSE FOR SEVERAL INSTANCES THEY ARE SO DIM THAT YOU CAN'T SEE IN THE DARK. I HAVE HAD THE VEHICLE IN SEVERAL TIMES WHEN IT WAS UNDER WARRANTY AND GM SAID IT WAS NORMAL WHEN THE F…
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I HAVE AN 2005 CHEVY TRAILBLAZER THAT THE LIGHTS CONSTANTLY ARE FLASHING. THEY DIM AND THEN COME VERY BRIGHT AGAIN NON-STOP. THIS CAN NOT BE SAFE BECAUSE FOR SEVERAL INSTANCES THEY ARE SO DIM THAT YOU CAN'T SEE IN THE DARK. I HAVE HAD THE VEHICLE IN SEVERAL TIMES WHEN IT WAS UNDER WARRANTY AND GM SAID IT WAS NORMAL WHEN THE FAN KICKS ON. WELL IT IS NOT NORMAL OR IS IT SAFE. I CAN NOT MANUALLY FLICK THE LIGHTS AS FAST AS THEY FLICKER WHEN I AM DRIVING DOWN THE ROAD. IT IS VERY UNSAFE AND GM NEEDS TO FIND A FIX FOR IT. *TR
NHTSA ODI #10246806
10,000 miles · Jul 1, 2008
Electrical SystemExterior LightingFuel System, Gasoline
HEADLIGHTS DIM INTERMITTENTLY, HEAT LOOSES POWER AT THE SAME TIME, NOW GETTING FLICKERING OF INTERIOR LIGHTS. WASN'T ABLE TO FIX IT. BUMPER WARPING. GETTING 10 MILES TO THE GALLON! PAINT ON BUTTONS WEARING ON RADIO. SUN ROOF LEAKED PROFUSELY, HAD IT FIXED. REAR WINDOW DEFOGGER DOESN'T WORK. HEAD LINER SAGGED. *TR
NHTSA ODI #10232911
66,000 miles · Feb 1, 2008
Electrical SystemInterior Lighting
WHILE DRIVING ABOVE 30MPH, IF TAKE FOOT OFF ACCELERATOR, HEADLIGHTS WILL DIM TO ALMOST NO LIGHT AS WILL THE DASH LIGHTS, ON OFF, ON OFF, WHEN PRESS ON THE ACCELERATOR, LIGHTS WILL GO ON NORMALLY WITH SAME BRIGHTNESS. DOME LIGHT BUTTON TO LEFT OF STEERING WHEEL WILL WORK ONCE EVERY 50 TRIES, LIGHTS ON LEFT SIDE OF RADIO DO NOT W…
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WHILE DRIVING ABOVE 30MPH, IF TAKE FOOT OFF ACCELERATOR, HEADLIGHTS WILL DIM TO ALMOST NO LIGHT AS WILL THE DASH LIGHTS, ON OFF, ON OFF, WHEN PRESS ON THE ACCELERATOR, LIGHTS WILL GO ON NORMALLY WITH SAME BRIGHTNESS. DOME LIGHT BUTTON TO LEFT OF STEERING WHEEL WILL WORK ONCE EVERY 50 TRIES, LIGHTS ON LEFT SIDE OF RADIO DO NOT WORK, CD PLAYER WILL NOT TAKE CDS. I AM UNABLE TO DRIVE MY VEHICLE AT NIGHT, IT HAS BEEN TO A CERTIFIED CHEVROLET DEALERSHIP TWICE NOW, THEY HAVE STATED THAT EVERYTHING IS RUNNING CORRECTLY AND THAT THEY CANNOT FIND ANYTHING WRONG WITH THE VEHICLE. THE SPEEDOMETER WILL READ 0 (NO MATTER HOW FAST I'M GOING) WHICH IS APPARENTLY A KNOWN PROBLEM WITH CHEVY VEHICLES, BUT THEY ARE NOT WILLING TO FIX IT IN THE TRAILBLAZER. *TR
NHTSA ODI #10216736
Mileage unknown · Jun 20, 2007
Engine And Engine CoolingEquipmentExterior Lighting
IN MARCH 2007 THE CHECK ENGINE LIGHT CAME ON AND STAYED ON . I TOOK VEHICLE TO DEALER TO HAVE IT CHECKED OUT. IT TURNED OUT TO BE THE SECONDARY AIR PUMP EITHER CLOGGED, NOT RUNNING OR SOMETHING ELECTRICAL WITH IT. EVER SINCE THEN ALL THE EXTERIOR AND INTERIOR LIGHTS BECAME BRIGHT THEN DIMMED FOR A FEW MINUTES WHEN I START TH…
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IN MARCH 2007 THE CHECK ENGINE LIGHT CAME ON AND STAYED ON . I TOOK VEHICLE TO DEALER TO HAVE IT CHECKED OUT. IT TURNED OUT TO BE THE SECONDARY AIR PUMP EITHER CLOGGED, NOT RUNNING OR SOMETHING ELECTRICAL WITH IT. EVER SINCE THEN ALL THE EXTERIOR AND INTERIOR LIGHTS BECAME BRIGHT THEN DIMMED FOR A FEW MINUTES WHEN I START THE VEHICLE. AFTER LEAVING FOR WORK AND STOPPING THE VEHICLE TO TURN, AND THEN AGAIN A FEW MILES DOWN THE ROAD, THE HEADLAMPS STARTED TO FLICKER. SOMETIMES IT FLICKERED A FEW MORE TIMES BEFORE I GOT TO WORK , ONLY 25 MINUTES FROM HOME. I HAVE NOTICED THE BATTERY GAUGE FLUCTUATED WHILE THIS IS HAPPENED. I WAS TOLD THAT THIS WAS NORMAL. ALSO, I AM NOT SURE THIS WAS RELATED, BUT EVER SINCE THE CHECK ENGINE"LIGHT PROBLEM THE AIR CONDITIONING SYSTEM DID NOT WORK PROPERLY. IT DIDN'T WORK ON 5, BUT IT DID BLOW SOME ON THE OTHER LEVELS, AND THAT VARIED TOO. I HAVE HAD THE AIR CONDITIONING RECHARGED, TO NO AVAIL, IT ACTED LIKE THERE WAS A LEAK SOMEWHERE. HOPEFULLY ,GM OR SOMEONE ELSE WILL FIND THE SOLUTION BEFORE THERE WAS AN ELECTRICAL FIRE OR EVEN A CASE OF ROAD RAGE DUE TO OTHER DRIVERS THINKING I WA S FLASHING THE BRIGHT LIGHTS AT THEM. *AK
NHTSA ODI #10193857
31,000 miles · Jun 5, 2007
Exterior LightingInterior Lighting
EXTERIOR LIGHTS AND INTERIOR LIGHTS DIM OUT RANDOMLY WHILE DRIVING. THE SERVICE DEPARTMENT AT GM SAYS IT IS NORMAL AND NOTHING THEY CAN DO. CHEVROLET HAS ISSUED A BULLETIN REGARDING THIS. HOW SAFE CAN IT BE TO DRIVE AT NIGHT WITH HEADLIGHTS DIMMING OUT? *TR
NHTSA ODI #10192457
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.