SPEEDOMETER JUST WENT HAYWIRE. READINGS ALL OVER THE PLACE REGARDLESS OF ACTUAL SPEED. SAME AS MANY OTHERS HAVE REPORTED FOR THIS VEHICLE. *LN
2005 Chevrolet Trailblazer Ext 370
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all Trailblazer Ext 370 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
200 reports with mileage · 37 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 101 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 67 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Exterior Lighting. Review the 15 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
237 reportsSPEEDOMETER NOT READING PRPER SPEED. STAYS AT O SOMETIMES, AND THEN YOU COULD BE GOING 25, AND IT READS 75. *TR
FUEL GAUGE NOT WORKING. HAS NOT WORKED FOR A LONG TIME NOW. I WILL NOT PAY 800.00 TO GET IT FIXED. STOPPED WORKING AT AROUND 60,000 MILES. FINALLY RAN OUT OF GAS 1/25/11. I DID NOT KNOW THE POWER STEERING WOULD QUIT WORKING. I WAS SCARED I WOULD NOT BE ABLE TO STEER IT OFF THE ROAD SAFELY WITH TRAFFIC BEHIND ME. I FINALLY D…
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FUEL GAUGE NOT WORKING. HAS NOT WORKED FOR A LONG TIME NOW. I WILL NOT PAY 800.00 TO GET IT FIXED. STOPPED WORKING AT AROUND 60,000 MILES. FINALLY RAN OUT OF GAS 1/25/11. I DID NOT KNOW THE POWER STEERING WOULD QUIT WORKING. I WAS SCARED I WOULD NOT BE ABLE TO STEER IT OFF THE ROAD SAFELY WITH TRAFFIC BEHIND ME. I FINALLY DID, IT WAS HARD, BUT THANK GOD AND LUCKILY DID NOT GO OVER THE EMBANKMENT. *TR
OUR 2005 CHEVY TRAILBLAZER SPEEDOMETER JUST QUIT WORKING. WE CAN BE SITTING AT A COMPLETE STOP AND THE SPEEDOMETER WILL READ 50MPH. IT WILL RANDOMLY CHANGE AND LATER WILL EVEN DROP BELOW THE ZERO MARK. WE HAVE NO IDEA HOW FAST WE ARE TRAVELING WHEN THIS OCCURS. YESTERDAY, WHILE DRIVING FROM OH TO IN, I HAD TO GUESS HOW FAST …
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OUR 2005 CHEVY TRAILBLAZER SPEEDOMETER JUST QUIT WORKING. WE CAN BE SITTING AT A COMPLETE STOP AND THE SPEEDOMETER WILL READ 50MPH. IT WILL RANDOMLY CHANGE AND LATER WILL EVEN DROP BELOW THE ZERO MARK. WE HAVE NO IDEA HOW FAST WE ARE TRAVELING WHEN THIS OCCURS. YESTERDAY, WHILE DRIVING FROM OH TO IN, I HAD TO GUESS HOW FAST I WAS GOING ON THE FREEWAY. THE SPEEDOMETER STARTED OUR READING 45MPH, SO I ESTIMATED THAT I HAD TO TRAVEL AT 110 MPH TO GO 65MPH. THE PROBLEM BECAME WORSE WHEN I NOTICED THAT MY SPEEDOMETER WAS JUMPING FROM ONE SPEED TO THE NEXT, NOT GRADUALLY CLIMBING LIKE IT SHOULD HAVE BEEN. THIS PROBLEM IS A RANDOM OCCURRENCE. I NEVER KNOW WHEN TO EXPECT IT. OBVIOUSLY, THERE ARE SERIOUS CONSEQUENCES THAT CAN ENSUE. SPEEDING TICKETS, ENDANGERING OTHERS' AS WELL AS OUR OWN LIVES BY DRIVING TOO FAST OR TOO SLOW, OR CAUSING ACCIDENTS IN GENERAL. NOTHING HAS BEEN DONE TO CORRECT THE PROBLEM SINCE THE CAR IS OUT OF WARRANTY AND I AM UNDEREMPLOYED AND WE CANNOT AFFORD TO REPLACE THE INSTRUMENT CLUSTER AT THIS TIME. *LN
I HAVE HAD THE FOLLOWING PROBLEMS WITH MY 2005 CHEVY TRAILBLAZER EXT LS: 2008: FUEL SENSOR FAILURE, RUNNING BOARD FELL OFF 2009: HEAD AND TAIL LIGHTS GOING OUT FREQUENTLY, WINDOWS WOULD GET STUCK- COULD NOT GO UP OR DOWN- ALL DASH LIGHTS FLASHING, CAR STALLING OUT- NEEDED CIRCUIT BOARD REPLACED. ANTI-THEFT NON-FUNCTIONING. 2…
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I HAVE HAD THE FOLLOWING PROBLEMS WITH MY 2005 CHEVY TRAILBLAZER EXT LS: 2008: FUEL SENSOR FAILURE, RUNNING BOARD FELL OFF 2009: HEAD AND TAIL LIGHTS GOING OUT FREQUENTLY, WINDOWS WOULD GET STUCK- COULD NOT GO UP OR DOWN- ALL DASH LIGHTS FLASHING, CAR STALLING OUT- NEEDED CIRCUIT BOARD REPLACED. ANTI-THEFT NON-FUNCTIONING. 2010:WINDSHIELD WIPERS WILL NOT SHUT OFF(REPLACED DISPLAY BOARD), IDLE PULLEY NEEDS TO BE REPLACED , 4X4 RUNNING ROUGH AND MAKING A SOUND,SPEEDOMETER NON-FUNCTIONING, RADIO STOPPED WORKING,GLOVE BOX LOCK BROKE, HEAT/AC STOPPED WORKING FIRST ON BLOWERS 4& 5 THEN STOPPED COMPLETELY I HAVE NOT BEEN ABLE TO AFFORD TO FIX ALL THESE REPAIRS, AS IT EXCEEDS $2,000. CAR IS OVER WARRANTY AND WAS BROUGHT USED FROM A FORMER GM DEALER AT UNDER 50K. I CONTACTED GM IN NOVEMBER 2010 AND THEY STATED THAT THEY MY VEHICLE WAS OUT OF WARRANTY AND THEY COULD NOT ASSIST ME. GM INITIATED CONTACT IN DECEMBER OF 2010 AND TOLD ME TO GET A FULL DIAGNOSIS OF THE PROBLEMS AND STATED THAT IT WAS OK TO GO TO THE FORMER GM DEALER. I PAID OVER $100 FOR THIS DIAGNOSIS AND THEY STATED THAT MY VEHICLE WAS OUT OF WARRANTY AND THEY CANNOT PROVIDE ANY ASSISTANCE WHATSOEVER. *TR
2005 CHEVROLET TRAILBLAZER INSTRUMENT (SPEEDOMETER) CLUSTER IS NOT WORKING. APPARENTLY THIS IS A COMMON DEFECT WITH THE TRAILBLAZER. IT SIMPLY STOPPED WORKING, AND NOW I AM TRYING TO SAVE THE MONEY TO REPLACE THE $500 CLUSTER & IN THE MEANTIME USE OTHER TRAFFIC TO GAUGE MY SPEED. THE FUEL GAUGE STOPPED WORKING AS WELL. *TR
2005 CHEVROLET TRAILBLAZER..THE SPEEDOMETER HAS WENT OUT ON MY TRUCK..IT IS READING 80 MPH SOMETIMES AND WHEN I TAKE OFF IT GOES WAY OVER 120 MPH.. THIS IS A SAFETY ISSUE AND I HAVE READY SEVERAL COMPLAINTS ON THIS YEAR AND MODEL TRUCK. I HAVE HAD THIS TRUCK FOR 5 YEARS AND I BOUGHT IT WHEN IT WAS NEW AND I'VE PUT SEVERAL THOUSA…
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2005 CHEVROLET TRAILBLAZER..THE SPEEDOMETER HAS WENT OUT ON MY TRUCK..IT IS READING 80 MPH SOMETIMES AND WHEN I TAKE OFF IT GOES WAY OVER 120 MPH.. THIS IS A SAFETY ISSUE AND I HAVE READY SEVERAL COMPLAINTS ON THIS YEAR AND MODEL TRUCK. I HAVE HAD THIS TRUCK FOR 5 YEARS AND I BOUGHT IT WHEN IT WAS NEW AND I'VE PUT SEVERAL THOUSANDS OF DOLLARS INTO THIS TRUCK THIS PAST 10 MONTHS AND NOW ITS GOING TO COST ME ANOTHER $500 DOLLARS TO GET THIS FIX. THERE SHOULD BE A RECALL ON THIS ISSUE FROM GM. I'M GOING TO COMPLAIN TO THE BBB. MY LATE HUSBAND WAS A GM EMPLOYEE AND HE WORKED FOR THEM FOR 15 YEARS AND WAS KILLED IN AN AUTO ACCIDENT LAST MARCH AND GM HAS JACKED ME AROUND SINCE THEN AND NOW I HAVE THIS ISSUE. I'M NOT GOING TO BUY ANOTHER GM VEHICLE THE NEXT TIME. PLEASE FIX THIS VEHICLE AT NO CHARGE. I'M A SINGLE PARENT ON SSI NOW AND CANT AFFORD THIS AND ITS A SAFETY ISSUE ON THIS TRUCK. IT NEEDS TO HAVE A RECALL ISSUE. *TR
SPEEDOMETER ON 2005 TRAILBLAZER IS MISLEADING. YOU CAN BE DOING 70MPH AND IT WILL ONLY REGISTER 50 MPH. SOMETIMES YOU CAN BE DOING 20 MPH AND IT WILL REGISTER 120 MPH. BUT 80% OF THE TIME THE SPEEDOMETER IS CORRECT (I THINK). THIS CAN BE DANGEROUS, ESPECIALLY TO NEW DRIVERS (MY DAUGHTER WHO JUST TURNED 16). GM IS PROVIDING …
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SPEEDOMETER ON 2005 TRAILBLAZER IS MISLEADING. YOU CAN BE DOING 70MPH AND IT WILL ONLY REGISTER 50 MPH. SOMETIMES YOU CAN BE DOING 20 MPH AND IT WILL REGISTER 120 MPH. BUT 80% OF THE TIME THE SPEEDOMETER IS CORRECT (I THINK). THIS CAN BE DANGEROUS, ESPECIALLY TO NEW DRIVERS (MY DAUGHTER WHO JUST TURNED 16). GM IS PROVIDING MISLEADING INFORMATION TO THE DRIVER AND YOU HAVE NO INDICATION THAT IT IS INCORRECT. *TR
AS YOU CAN SEE FROM BELOW THE COMPLAINT, SEEMS I GOT A CALL FROM NIKKI AT GM OR CHEVY AND THEY STATED I NEED TO BRING VEHICLE IN, PAY FOR THE DIAGNOSTIC AND THEN MAYBE THEY CAN DECIDE ON WHAT TO DO, I BELIEVE THIS ISSUE HAS GONE ON FOR 5 YEARS NOW AND THEY SHOULD BE CHECKING TO SEE WHAT THE ISSUE IS...COULD BE FAULTY WIRING, WHI…
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AS YOU CAN SEE FROM BELOW THE COMPLAINT, SEEMS I GOT A CALL FROM NIKKI AT GM OR CHEVY AND THEY STATED I NEED TO BRING VEHICLE IN, PAY FOR THE DIAGNOSTIC AND THEN MAYBE THEY CAN DECIDE ON WHAT TO DO, I BELIEVE THIS ISSUE HAS GONE ON FOR 5 YEARS NOW AND THEY SHOULD BE CHECKING TO SEE WHAT THE ISSUE IS...COULD BE FAULTY WIRING, WHICH CAN LEAD TO A FIRE, SAFETY ISSUE, COULD BE A FALSE WARNING OR WORSE A REAL WARNING, AS YOU CAN SEE IN THE LINK I ENCLOSED TO THEM, MANY PEOPLE PAYING BIG DOLLARS TO NOT HAVE THIS ISSUE RESOLVED, HOW LONG DOES THIS GO ON, I AM HOPING YOU GUYS CAN STEP IN FOR US AND HOPEFULLY LIGHT A FIRE AND GET GM AND CHEVY TO FINALLY LOOK INTO THIS MATTER..THEY ARE GOOD ABOUT CRYING NO SALES AND NEED THE INFRACTION FROM THE GOV TO STAY AFLOAT, SEEMS THE BIG WIGS JUST NEEDED THEIR WALLETS FATTENED, BECAUSE THEY IS NO CONCERN OR WORRIES ABOUT A SAFETY ISSUE, EVEN THE GAUGES ARE NOT WORKING, CAN YOU PLEASE HELP US OUT, [XXX] NAME:[XXX] EMAIL ADDRESS: [XXX] ADDRESS: [XXX] DAY PHONE: ()-- EX EVENING PHONE: [XXX]EX COMMENTS: I HAVE MY CHECK ENGINE LIGHT ON, CAN'T SEEM TO FIGURE WHAT IS THE PROBLEM ON MY 2005 TRAILBLAZER, WENT TO THIS SITE HTTP://WWW.CARCOMPLAINTS.COM/CHEVROLET/TRAILBLAZER/2005/ELECTRICAL/CHECK ENGINE LIGHT IS ON.SHTML AND LOW AND BEHOLD, I AM NOT ALONE ...ARE YOU GUYS GOING TO HELP US WITH THIS PROBLEM, AT LEAST TELL US WHY THIS LIGHT GOES ON, PLEASE, IT CAN COST THOUSANDS TO FIX BUT NEVER HAVE IT FIXED, EVEN MY BATTERY GAUGE HAS SEEMED TO DIE, AND THE GAS GAUGE SEEMS TO FLEX ON IT'S ON ALSO, AS YOU CAN SEE SOME PEOPLE ARE JUST LEAVING CHEVY BEHIND, HOW ABOUT SOME HELP, YOU GUYS USED TO BE GOOD, WHAT HAPPENED, I BELIEVE THIS NEEDS A RECALL TO FIX THIS ISSUE...[XXX] VEHICLE CONCERN INFO: NATURE OF CONCERN: VEHICLE MODEL: YEAR: 2005 VIN NUMBER:[XXX] MILEAGE: 800051 ALLOW PHONE CONTACT: YES BEST TIME FOR PHONE CONTACT: PM. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
LIGHTS DIMMING AND FLASHING ALTERNATOR NOT CHARGING, WIRING PROBLEM, DEALER HAS NO ANSWER. I HAVE VEHICLE JUST STARTED THIS AT 74000 MILES, WAS FINE UP UNTIL THAT POINT. HEATER FAN WORKS INTERMITTENTLY. GHOST ELECTRICAL PROBLEMS WITH DOOR LOCKS, RADIO , HIGH BEAMS. VERY SCARY TO DRIVE. *TR
Official recalls
0No recalls in this snapshot.
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
2PE11014 · Fuel Level Gauge System Failure
Opened Apr 25, 2011 · Closed Sep 23, 2011
Status: closed (inferred from source dates) · Fuel System, Other; Fuel System, Other:storage:fuel Gauge System
The office of defects investigations (ODI) analyzed complaint data provided by General Motors (GM) as well as complaints submitted to ODI from consumers.In total, there were 5,089 unique reports indicating an inaccurate fuel level reading while driving.General Motors stated that this condition occurs when the contacts of the fuel sensor wear prematurely.Most of the complaints indicated an empty fuel gauge reading after filling the tank.Less than 10 percent of theODI complaints involved an engine stall incident.During this investigation, GM developed a remedy procedure and issued special coverage bulletin instructing dealers to install a new design fuel level sensor.The bulletin was sent to dealers on August 10, 2011 and the owner letter mailing began on August 15, 2011.See the investigative file for copies of GM's bulletin and owner letter.This preliminary evaluation is closed.
Additional source detail variants (2)
Fuel System, Other
The office of defects investigations (ODI) analyzed complaint data provided by General Motors (GM) as well as complaints submitted to ODI from consumers.In total, there were 5,089 unique reports indicating an inaccurate fuel level reading while driving.General Motors stated that this condition occurs when the contacts of the fuel sensor wear prematurely.Most of the complaints indicated an empty fuel gauge reading after filling the tank.Less than 10 percent of theODI complaints involved an engine stall incident.During this investigation, GM developed a remedy procedure and issued special coverage bulletin instructing dealers to install a new design fuel level sensor.The bulletin was sent to dealers on August 10, 2011 and the owner letter mailing began on August 15, 2011.See the investigative file for copies of GM's bulletin and owner letter.This preliminary evaluation is closed.
Fuel System, Other:storage:fuel Gauge System
The office of defects investigations (ODI) analyzed complaint data provided by General Motors (GM) as well as complaints submitted to ODI from consumers.In total, there were 5,089 unique reports indicating an inaccurate fuel level reading while driving.General Motors stated that this condition occurs when the contacts of the fuel sensor wear prematurely.Most of the complaints indicated an empty fuel gauge reading after filling the tank.Less than 10 percent of theODI complaints involved an engine stall incident.During this investigation, GM developed a remedy procedure and issued special coverage bulletin instructing dealers to install a new design fuel level sensor.The bulletin was sent to dealers on August 10, 2011 and the owner letter mailing began on August 15, 2011.See the investigative file for copies of GM's bulletin and owner letter.This preliminary evaluation is closed.
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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