HEADLIGHTS AND DASH LIGHTS DIM FOR NO APPARENT REASON. HEADLIGHTS FLICKER, USUALLY ONLY MOMENTARILY BUT ON OCCASION HAS LASTED FOR UP TO 10 MINUTES. I FEEL IT IS ILLEGAL AND UNSAFE TO DRIVE. GM SAYS IT IS "NORMAL" *JB
2005 Chevrolet Trailblazer
Owner reports · Recalls · Investigations
More warning signs than most Trailblazer years
Owner complaints for the 2005 Chevrolet Trailblazer are substantially higher than the model-year median of 87.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Trailblazer years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
1,220 reports with mileage · 246 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Electrical System. Review the 617 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 435 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Exterior Lighting. Review the 140 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Electrical System complaints
617 reportsTL* - THE CONTACT NOTICED WHILE DRIVING AT NIGHT THE HEADLIGHTS WOULD GO DOWN TO LOW BEAMS. ONCE VEHICLE WAS WARM HE DIDN'T HAVE THIS FAILURE. THE CONTACT STATED THAT HE COULD BARELY SEE THE ROAD IN FRONT OF HIM WHILE DRIVING. ALSO, WHILE DRIVING AND ANOTHER VEHICLES BLINKED THE LIGHTS TO INFORM HIM THAT THE HIGH BEAM…
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TL* - THE CONTACT NOTICED WHILE DRIVING AT NIGHT THE HEADLIGHTS WOULD GO DOWN TO LOW BEAMS. ONCE VEHICLE WAS WARM HE DIDN'T HAVE THIS FAILURE. THE CONTACT STATED THAT HE COULD BARELY SEE THE ROAD IN FRONT OF HIM WHILE DRIVING. ALSO, WHILE DRIVING AND ANOTHER VEHICLES BLINKED THE LIGHTS TO INFORM HIM THAT THE HIGH BEAMS WERE ON, BUT THE VEHICLE INDICATOR LIGHT DIDN'T SHOW THAT THE HIGH BEAMS WERE ON. THE CONTACT TOOK VEHICLE TO 4 TIMES , AND THE LAST TIME WAS TOLD THAT HIS AIR PUMP WAS THE CAUSE OF THIS MALFUNCTION. THE CONTACT STATED THAT HE STILL HAD NO RESOLUTION TO THE PROBLEM WITH HIS HEADLIGHTS. THE CONTACT HAS CALLED GENERAL MOTORS, AND THEY TOOK HIS COMPLAINT. HE WAS TOLD BY GENERAL MOTORS THAT THEY WERE WORKING ON THIS FAILURE DUE TO OF THE NUMBER OF SIMILAR COMPLAINTS. THE CONTACT STATED THT HE HAD NO RESOLUTION FROM GENERAL MOTORS, AND HE HAS CONTACTED THE BETTER BUSINESS BUREAU. THE BBB GAVE HIM A CLAIM # 71438795446, AND WAS TOLD THAT THEY WOULD WORK WITH GENERAL MOTOR AND SEE WHAT THEY CAN DO ABOUT THIS. *AK
NIGHT DRIVING UNDER NORMAL CIRCUMSTANCES THE VEHICLE A CHEVROLET TRAILBLZER LS 2005 HAS A PROBLEM THAT RANDOMLY SHUTS OFF THE HEADLIGHTS AND DASHBOARD LIGHTS. THE TRAILBLAZER DECIDES TO DO THIS TOTALLY ON ITS OWN AT RANDOM. THIS CAUSES A POTENTIALLY DEADLY SITUATION WHEN ON THE INTERSTATE AND YOUR HEADLIGHTS GO OUT AND DECIDE …
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NIGHT DRIVING UNDER NORMAL CIRCUMSTANCES THE VEHICLE A CHEVROLET TRAILBLZER LS 2005 HAS A PROBLEM THAT RANDOMLY SHUTS OFF THE HEADLIGHTS AND DASHBOARD LIGHTS. THE TRAILBLAZER DECIDES TO DO THIS TOTALLY ON ITS OWN AT RANDOM. THIS CAUSES A POTENTIALLY DEADLY SITUATION WHEN ON THE INTERSTATE AND YOUR HEADLIGHTS GO OUT AND DECIDE TO COME BACK ON AT RANDOM INTERVALS MAYBE APROXIMATELY 15 TO 20 SECONDS APART. SEVERAL ATTEMPS HAVE BEEN MADE TO THE CHEVROLET DEALERSHIP TO GET THE PROBLEM REPAIRED. THEIR COMMENT IS THAT THEY EITHER CANNOT DUPLICATE THE PROBLEM OR THEIR IS A SERVICE BULLETIN THAT EXPLAINS THE ISSUE. I HAVE DONE THE PROCEDURES THAT THE DEALERSHIP DESCRIBED IN THE SERVICE BULLETINS WITH NO SUCCESS. CURRENTLY MY TRAILBLAZER IS BEING REPAIRED ONCE AGAIN AT TERRY LEE CHEVROLET AS OF 12-19-06. THE LAST TIME THAT THE VEHICLE WAS IN FOR REPAIR TERRY LEE CHEVROLET REPLACED WHAT THEY HAD THOUGH WAS A FAULTY BODY CONTROL MODULE. REPLACING THIS MODULE OBVIOUSLY DID NOT RECTIFY THE PROBLEM AND ON THURSDAY 12-14-06 THE PROBLEM ONCE AGAIN RETURNED. SINCE THE VEHICLE IS USED TO TRANSPORT MY CHILDEREN AND WIFE WHO HAVE BEEN DRIVING PRIMARILY AT NIGHT. I HAVE BECOME SKEPTICAL ABOUT WHETHER OR NOT THE VEHICLE IS SAFE TO ACTUALLY DRIVE AT NIGHT BECAUSE YOU NEVER KNOW WHEN THE LIGHTS WILL DECIDE TO TURN OFF BY THEMSELVES AND POTENTIALLY CAUSE THEM TO BE IN AN ACCIDENT. *NM
HEADLIGHTS..FOR NO APPARENT REASON MY HEADLIGHT FLASH OFF AND RIGHT BACK ON AND THEN FLICKER AT A CONSTANT I HAVE TAKEN MY TRAILBLAZER TO THE DEALER WHERE I BOUGHT IT SEVERAL TIMES AND THEY SAY THAT THEY CAN'T FIND THE PROBLEM..I HAVE HAD THIS VEHICLE IN THE SHOP SEVERAL DIFFERENT TIMES..THEY HAVE REPLACED THE INSTRUMENT PANEL A…
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HEADLIGHTS..FOR NO APPARENT REASON MY HEADLIGHT FLASH OFF AND RIGHT BACK ON AND THEN FLICKER AT A CONSTANT I HAVE TAKEN MY TRAILBLAZER TO THE DEALER WHERE I BOUGHT IT SEVERAL TIMES AND THEY SAY THAT THEY CAN'T FIND THE PROBLEM..I HAVE HAD THIS VEHICLE IN THE SHOP SEVERAL DIFFERENT TIMES..THEY HAVE REPLACED THE INSTRUMENT PANEL AND THE SPEEDOMETER CABLE..THE ONSTAR COMPUTER NOW YOU TELL ME WHY THEY CAN'T FIGURE OUT WHAT IS BLOWING THESE THINGS OUT..WHY THEY CAN'T FIND A PROBLEM WITH THEM. *JB
WHILE DRIVING TO WORK IN THE EARLY MORNING WHEN IT WAS STILL DARK THE HEADLIGHTS AND DASH BOARD LIGHTS BEGAN TO FLICKER. THEY GOT REALLY DIM AND THEN CAME BACK TO FULL BRIGHTNESS. THIS HAPPENED FOR A PERIOD OF 15 - 20 MINUTES WHICH WAS WHEN I TURNED THE VEHICLE OFF. I TOOK THE VEHICLE TO THE DEALER WHERE IT WAS PURCHASED AND …
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WHILE DRIVING TO WORK IN THE EARLY MORNING WHEN IT WAS STILL DARK THE HEADLIGHTS AND DASH BOARD LIGHTS BEGAN TO FLICKER. THEY GOT REALLY DIM AND THEN CAME BACK TO FULL BRIGHTNESS. THIS HAPPENED FOR A PERIOD OF 15 - 20 MINUTES WHICH WAS WHEN I TURNED THE VEHICLE OFF. I TOOK THE VEHICLE TO THE DEALER WHERE IT WAS PURCHASED AND THEY WERE UNABLE TO DUPLICATE THE PROBLEM. THEY TOLD ME LATER THAT AFTERNOON THAT GM HAD BEEN CONTACTED AND THAT GM STATED THAT THIS WAS A NORMAL CONDITION AND THAT NO REPAIRS WERE WARRANTED. I FOUGHT WITH THE DEALER AND TOLD THEM THAT IT WAS NOT A NORMAL CONDITION AND THAT I WAS UNABLE TO DRIVE THE VEHICLE IN THE DARK BECAUSE IT CAUSED A SAFETY ISSUE BOTH TO MYSELF AND TO OTHER VEHICLES ON THE ROAD. THEY KEPT THE VEHICLE FOR 3 DAYS AND THEN TOLD ME THAT GM WAS AWARE THAT THERE WAS IN FACT A PROBLEM WITH THE AIR PUMP HOWEVER THEY DID NOT KNOW WHAT TO DO TO FIX THE PROBLEM. I WAS ALSO TOLD THAT IT WILL CONTINUE TO DO THE SAME THING ON AND OFF IN THE FUTURE. THIS IS DEFINITELY A SAFETY ISSUE. WHEN THIS HAPPENS THE CARS DIRECTLY IN FRONT OF ME AND ON COMING TRAFFIC THINK THAT I AM FLASHING MY HIGH BEAMS AT THEM NOT TO MENTION THAT IT IS VERY DISTRACTING TO ME WHILE I AM DRIVING AND I AM SURE THAT EVENTUALLY, WHETHER IT IS MY VEHICLE OR ANOTHER VEHICLE WITH THE SAME PROBLEM, THIS WILL CAUSE AN ACCIDENT. AFTER LOOKING THROUGH THE COMPLAINTS ON THIS WEB SITE I HAVE FOUND 17 OTHER VEHICLES WITH THE SAME EXACT PROBLEM. THE OWNERS OF THOSE VEHICLES WERE ALSO GIVEN THE SAME "LAME" EXCUSE THAT I WAS GIVEN. *NM
DT*: THE CONTACT STATED WHILE DRIVING VARIOUS SPEEDS AT NIGHT, THE HEADLIGHTS, INTERIOR DOME LIGHT AND THE INSTRUMENT PANEL FLICKERED ON AND OFF WITHOUT WARNING. THE VEHICLE WAS DRIVEN TO THE DEALER WHO COULD NOT DUPLICATE THE PROBLEM. UPDATED 11/13/06. *JB
INTERMITTENT ELECTRICAL PROBLEM...WHEN DRIVING, LIGHTS DIM, ELECTRIC GAUGE GOES DOWN SEVERAL NOTCHES BELOW NORMAL READING AND THEN UP SEVERAL NOTCHES PAST NORMAL READING. THIS HAS BEEN AN ONGOING PROBLEM, GETTING WORSE, WITH THE LATEST INCIDENT HAVING OCCURRED TODAY, NOV. 11, 2006. *NM
2005 CHEVY TRAILBLAZER, HEADLIGHTS AND INTERIOR LIGHTS DIM AND FLASH FOR NO REASON WHILE DRIVING (LOOKS LIKE A CHRISTMAS TREE). IF I STOP AND SHUT THE VEHICLE OFF, AND RESTART, IT STOPS. SEE SEVERAL PEOPLE HAVING THE SAME ISSUE WHEN I SEARCH ON-LINE. DEALER CLAIMS THEY CAN FIND NO ERROR CODES. *NM
NO HORN ON VEHICLE. DEALER ATTEMPTED 5 TIMES TO REPAIR BUT HORN CONTINUES NOT TO WORK. *NM
I HAVE A 2005 CHEVY TRAILBLAZER LT. WHILE DRIVING ON THE HIGHWAY BEHIND A CAR MY HEADLIGHTS AND INTERIOR LIGHTS BEGAN TO FLICKER ( GET DIM AND COME BACK ON). THE CAR IN FRONT OF ME THOUGHT I WAS FLICKING ON MY HIGH BEAMS ON AND OFF AT HIM AND SLAMS ON THE BRAKE. I DID SOME RESEARCH ON MY CAR AND FOUND OUT THAT A LOT OF THE CHEVY…
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I HAVE A 2005 CHEVY TRAILBLAZER LT. WHILE DRIVING ON THE HIGHWAY BEHIND A CAR MY HEADLIGHTS AND INTERIOR LIGHTS BEGAN TO FLICKER ( GET DIM AND COME BACK ON). THE CAR IN FRONT OF ME THOUGHT I WAS FLICKING ON MY HIGH BEAMS ON AND OFF AT HIM AND SLAMS ON THE BRAKE. I DID SOME RESEARCH ON MY CAR AND FOUND OUT THAT A LOT OF THE CHEVY TRAILBLAZER OWNERS HAVE THE SAME PROBLEM AND THAT CHEVY CAN'T FIND THE CAUSE.*JB
Official recalls
206V417000 · Air Bags:frontal
Oct 31, 2006
CERTAIN VEHICLES ORIGINALLY BUILT WITH CLOTH SEATS THAT WERE EQUIPPED WITH AN AUTOMATIC AIR BAG PASSENGER SENSING SYSTEM AND LATER REUPHOLSTERED WITH AFTERMARKET LEATHER SEAT COVER KITS ARE INVOLVED. TESTING HAS INDICATED THAT THE AFTERMARKET LEATHER SEAT COVERS CAN CAUSE THE PASSENGER SENSING SYSTEM TO MALFUNCTION.
Consequence & remedy
Consequence: IF THE PASSENGER SENSING SYSTEM MALFUNCTIONS, THE FRONT AIR BAG ON THE PASSENGER SIDE MAY BE DISABLED WHEN IT SHOULD BE ENABLED, OR ENABLED WHEN IT SHOULD BE DISABLED. IN EITHER CASE, IN THE EVENT OF A CRASH THAT REQUIRES AIR BAG DEPLOYMENT, A FRONT PASSENGER'S LEVEL OF INJURY MAY BE INCREASED.
Remedy: BECAUSE A REPLACEMENT LEATHER SEAT COVER THAT IS COMPATIBLE WITH THE PASSENGER SENSING SYSTEM IS NOT AVAILABLE, GENERAL MOTORS (GM) WILL REPURCHASE THESE VEHICLES IN ACCORDANCE WITH THE TERMS STATED IN GM'S LETTER TO OWNERS. THE RECALL BEGAN ON NOVEMBER 6, 2006. OWNERS SHOULD CONTACT GM AT 1-877-477-1022 TO BEGIN THE PROCESS OF REPURCHASING THEIR VEHICLE.
05V035000 · Visibility:windshield
Feb 3, 2005
CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 212, 'WINDSHIELD MOUNTING.' THE WINDSHIELD URETHANE BEAD MAY NOT HAVE ADHERED TO THE BODY IN CERTAIN AREAS DURING THE CURE PROCESS.
Consequence & remedy
Consequence: IF A CRASH OCCURS, THE WINDSHIELD MAY NOT BE RETAINED, INCREASING THE RISK OF INJURY TO A VEHICLE OCCUPANT.
Remedy: DEALERS WILL REPLACE THE WINDSHIELD FREE OF CHARGE. THE RECALL BEGAN ON MARCH 10, 2005. OWNERS MAY CONTACT BUICK AT 1-866-608-8080, CHEVROLET AT 1-800-630-2438, OR GMC AT 1-866-996-9463.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
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.
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