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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.

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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.

7 crash reports1 fire reports7 injury reports

Electrical System complaints

101 reports
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80,142 miles · Jul 15, 2010
Electrical System

2005 CHEVY TRAILBLAZER EXT - SPEEDOMETER HAS CEASED TO WORK. I EITHER SAYS I AM GOING ZERO OR 120 MPH. HAVE NOW GOTTEN 2 SPEEDING TICKETS AND CAN NOT GET INSPECTED UNTIL THIS ISSUE IS RESOLVED. I HAVE BEEN ON THE INTERNET FOR HOURS NOW AND THERE ARE HUNDREDS AND HUNDREDS OF COMPLAINTS FOR THE SAME THING WITH THE SAME YEAR CH…

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2005 CHEVY TRAILBLAZER EXT - SPEEDOMETER HAS CEASED TO WORK. I EITHER SAYS I AM GOING ZERO OR 120 MPH. HAVE NOW GOTTEN 2 SPEEDING TICKETS AND CAN NOT GET INSPECTED UNTIL THIS ISSUE IS RESOLVED. I HAVE BEEN ON THE INTERNET FOR HOURS NOW AND THERE ARE HUNDREDS AND HUNDREDS OF COMPLAINTS FOR THE SAME THING WITH THE SAME YEAR CHEVY TRAILBLAZERS. NEXT STEP ACCORDING TO MOST IS THE GAS GAUGE CEASING TO WORK. THIS REALLY NEEDS TO BE ON THE RECALL LIST LIKE THE OTHER CHEVY VEHICLES WITH THE SAME ISSUE. *TR

NHTSA ODI #10343472

80,000 miles · Jun 20, 2010
Electrical System

I OWN A 2005 CHEVY TRAILBLAZER AND THE SPEEDOMETER AND GAS GAUGE HAVE BOTH STOPPED WORKING. I STARTED HAVING PROBLEMS AUGUST 2009 WHEN I FILLED UP THE GAS TANK I LEFT THE GAS STATION AND IT SAID I WAS ON EMPTY. I TURNED BACK AROUND AND WENT BACK TO THE SAME GAS STATION AND THE MANAGER TRIED TO FILL IT UP AND IT SHOWED I HAD A F…

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I OWN A 2005 CHEVY TRAILBLAZER AND THE SPEEDOMETER AND GAS GAUGE HAVE BOTH STOPPED WORKING. I STARTED HAVING PROBLEMS AUGUST 2009 WHEN I FILLED UP THE GAS TANK I LEFT THE GAS STATION AND IT SAID I WAS ON EMPTY. I TURNED BACK AROUND AND WENT BACK TO THE SAME GAS STATION AND THE MANAGER TRIED TO FILL IT UP AND IT SHOWED I HAD A FULL TANK AT THE PUMP. IT STARTED TO WORK AGAIN BUT THEN IT WOULD FLUCTUATE BACK AND FORTH. NOW IT'S JUST NOT WORKING AT ALL FOR ME. THE OTHER PROBLEM I HAVE IS THAT THE SPEEDOMETER WENT HAYWIRE. I WOULD SHOW I WOULD BE GOING 10 MPH AND ACTUALLY WAS GOING 50 MPH. THEN WHEN I WOULD STOP IT SHOWED WHILE IN PARK 70 MPH. I WOULD HAVE TO THEN TURN OFF AND ON MY CAR TO ZERO IT OUT. THE SPEEDOMETER IS STUCK PAST THE 140 MPH MARK AND HAS MOVED. THIS IS VERY DANGEROUS BECAUSE I HAVE 5 KIDS AND THIS IS THE VEHICLE I USE TO TRANSPORT US. WHAT IF I GET A TICKET FOR GOING TO FAST OR TO SLOW AND WHAT IF I RUN OUT OF GAS ON THE HIGHWAY. THIS IS VERY SCARY AND UNSAFE. I WAS TOLD BY A FRIEND TO SEE ABOUT ANY RECALLS AND FOUND NONE. I THEN CONTACTED GM AND THEY TOLD ME I HAVE TO TAKE IT A GM DEALER FOR A DIAGNOSTIC BUT THERE IS NO GUARANTEE THEY WOULD COVER THE COST. THEY SAID BECAUSE OF THE MILEAGE AND YEAR THAT IT'S FROM NORMAL WEAR AND TEAR I HAVE NEVER HAD A PROBLEM WITH ANY VEHICLE LIKE THIS BEFORE. HOW CONVENIENT AFTER THE WARRANTY GOES OUT I HAVE THIS PROBLEM. AFTER LOOKING ONLINE FOR RECALLS I FOUND SEVERAL OTHER SIMILAR CASES OF THE SAME YEAR, MAKE AND MODEL WITH LESS MILEAGE HAVING THE SAME ISSUES. I DID ASK THE GM REPRESENTATIVE FOR SOMEWHERE ELSE TO FILE A COMPLAINT AND THEY STATED THAT THEY WERE IT. I'M VERY UNSATISFIED WITH GM AND THE POLICIES AND I DON'T FEEL AS IF THEY ARE REALLY CONCERNED WITH THESE ISSUES. *TR

NHTSA ODI #10339182

64,000 miles · May 10, 2010
Electrical System

SPEEDOMETER DOES NOT RECORD PROPER SPEED. *TR

NHTSA ODI #10329543

35,000 miles · Apr 15, 2010
Electrical System

SPEEDOMETER SHOWS INCORRECT READING. *TR

NHTSA ODI #10325917

65,000 miles · Mar 17, 2010
Electrical System

I HAVE A 2005 CHEVY TRAILBLAZER AND IT HAS MANY PROBLEMS. BUT THE MOST DANGEROUS, AT THIS POINT, IS THE SPEEDOMETER STOPS WORKING. SOMETIMES, IT WON'T GET OFF OF ZERO. OTHER TIMES, IT SHOWS THAT I AM GOING OVER 120 MPH, WHEN IN FACT, I AM GOING WITH FLOW OF TRAFFIC. AT OTHER TIMES, IT SHOWS EITHER 15 TO 20 MILES ABOVE OR BEL…

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I HAVE A 2005 CHEVY TRAILBLAZER AND IT HAS MANY PROBLEMS. BUT THE MOST DANGEROUS, AT THIS POINT, IS THE SPEEDOMETER STOPS WORKING. SOMETIMES, IT WON'T GET OFF OF ZERO. OTHER TIMES, IT SHOWS THAT I AM GOING OVER 120 MPH, WHEN IN FACT, I AM GOING WITH FLOW OF TRAFFIC. AT OTHER TIMES, IT SHOWS EITHER 15 TO 20 MILES ABOVE OR BELOW THE SPEED I AM ACTUALLY DRIVING. THERE IS NO COMMON DENOMINATOR AS TO WHEN OR IF THE PROBLEM STARTS OR STOPS. IT IS VERY, VERY RANDOM. THE COST TO FIX WILL BE OVER $450.00. THERE ARE MANY OTHER TRAILBLAZER OWNERS THAT ARE HAVING THIS SAME PROBLEM. THE SPEEDOMETER PROBLEM COULD BE VERY, VERY DANGEROUS AS THE DRIVER DOES NOT KNOW HOW FAST, OR SLOW, THEY ARE ACTUALLY DRIVING. *TR

NHTSA ODI #10320553

70,000 miles · Mar 10, 2010
Electrical System

I HAVE A 2005 TRAILBLAZER EXT. THE GAS GAUGE AND SPEEDOMETER ARE BOTH BROKEN. I DID NOT REALIZE THIS UNTIL I RAN OUT OF GAS IN THE MIDDLE OF A BUSY THREE LANE HIGHWAY. MY SPEEDOMETER DID NOT BECOME CLEAR UNTIL I FOUND MYSELF AT A COMPLETE STOP WITH THE SPEEDOMETER REGISTERING 30 MPH. *TR

NHTSA ODI #10318720

50,000 miles · Feb 24, 2010
Electrical SystemFuel System, GasolineInterior Lighting

I OWN A 2005 CHEVY TRAILBLAZER IN DEC. 2009 I FILLED THE CAR WITH GAS AND THE FUEL GAUGE IMMEDIATELY REGISTERED EMPTY THE FUEL SENSOR HAS FAILED IT WILL COST $558.00 TO REPAIR. IN FEBRUARY THE SPEEDOMETER REGISTERED 120 MPH WHILE SITTING STILL FOR A STOP SIGN NOW THE SPEEDOMETER DOES NOT WORK. I CONTACTED GEN MOTORS IN DETROIT…

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I OWN A 2005 CHEVY TRAILBLAZER IN DEC. 2009 I FILLED THE CAR WITH GAS AND THE FUEL GAUGE IMMEDIATELY REGISTERED EMPTY THE FUEL SENSOR HAS FAILED IT WILL COST $558.00 TO REPAIR. IN FEBRUARY THE SPEEDOMETER REGISTERED 120 MPH WHILE SITTING STILL FOR A STOP SIGN NOW THE SPEEDOMETER DOES NOT WORK. I CONTACTED GEN MOTORS IN DETROIT, MICHIGAN AND WAS ASKED TO HAVE DIAGNOSTIC DONE AT ED BOZART CHEVORLET. BY A REPRESENTATIVE IN CONSUMER COMPLAINTS THEY CONTACTED DISTRICT REPRESENTATIVE FOR CHEVY AND THEY BOTH SAID THAT THERE IS NOTHING THEY CAN DO TO HELP US. THE TOTAL COST TO FIX OUR CAR IS $1,258.00. WE WERE TOLD TO FIX THE CAR FOR SAFETY REASONS AND IF THEY DECIDED TO RECALL THE TRAILBLAZER WE MIGHT BE REIMBURSED. THERE ARE SEVERAL COMPLAINTS IN THE COMPUTER CONCERNING THE SAME PROBLEMS WITH THIS CAR. *TR

NHTSA ODI #10313719

33,333 miles · Feb 15, 2010
Electrical SystemEngine And Engine Cooling

MY CHEVY TRAILBLAZER 2005 MODEL ACCELERATED IN THE PARKING LOT AS I WAS TURNING IT ON AND PUT IT IN DRIVE WITH MY FOOT OVER THE BRAKE, IT ACCELERATED AND JUMPED 3 FEET BEFORE I STOPPED IT. I AM VERY THANKFUL, NO CAR WAS IN FRONT OF ME! *TR

NHTSA ODI #10310408

Mileage unknown · Feb 10, 2010
Electrical System

THE SPEEDOMETER HAS BROKE. IT IS AN ELECTRICAL THING. OUR GAS GAUGE, SOMETHING ELECTRICAL HAS ALSO BROKE. WE HAD THAT FIXED FOR $400.00 AND NOW OUR SPEEDOMETER IS BROKE. IT NEVER WORKS NOW, SO YOU DON'T KNOW HOW FAST YOU ARE GOING. *TR

NHTSA ODI #10308400

60,000 miles · Feb 2, 2010
Electrical System

SPEEDOMETER QUIT WORKING. THE DEALER SAID THAT THIS HAPPENS A LOT TO THE TRAILBLAZER BUT CHEVY HAS NOT RECALLED IT. I HAVE ALSO SEEN NUMEROUS COMPLAINTS ON VARIOUS WEBSITES CONCERNING THE SAME PROBLEM. *TR

NHTSA ODI #10303819

Official recalls

0

No 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

2

PE11014 · 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.