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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

Power Train complaints

5 reports
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223,000 miles · Aug 7, 2015
Power Train

ON JULY 29, 2015 I EXITED THE FREEWAY, AND SUDDENLY MY 2005 CHEVY TRAILBLAZER EXT 4.2L BEGAN TO STALL AND WOULD NOT PROCEED UPON ACCELERATION. AFTER CALLING THE GM CORPORATE OFFICE, I ASKED IF THERE WAS A POSSIBLE WARRANTY ON THE VEHICLES TRANSMISSION, THEY STATED "NO"... HOWEVER, THE REPRESENTATIVE DID TELL ME THAT MY USED 200…

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ON JULY 29, 2015 I EXITED THE FREEWAY, AND SUDDENLY MY 2005 CHEVY TRAILBLAZER EXT 4.2L BEGAN TO STALL AND WOULD NOT PROCEED UPON ACCELERATION. AFTER CALLING THE GM CORPORATE OFFICE, I ASKED IF THERE WAS A POSSIBLE WARRANTY ON THE VEHICLES TRANSMISSION, THEY STATED "NO"... HOWEVER, THE REPRESENTATIVE DID TELL ME THAT MY USED 2005 TRAILBLAZER EXT DID HAVE THE TRANSMISSION REPLACED IN 2007. THIS IS 2 YEARS AFTER THE VEHICLE HIT THE ROAD SPANKING BRAND NEW. THERE HAS TO BE A PROBLEM WITH THE CHEVY TRAILBLAZERS TRANSMISSION. I ENDED UP SPENDING A TOTAL OF $1,600.00 FOR A REBUILT TRANSMISSION. I AM NOW LOOKING TO POSSIBLY TRADE MY TRAILBLAZER IN SOON. LOOKING AT THE COMPLAINTS HERE IN THIS FORUM REGARDING THE FAILURE OF THE CHEVY TRAILBLAZER TRANSMISSION IS RIDICULOUS. GM REFUSES TO OWN UP TO THEIR MISTAKE. IT WOULD BE NICE TO SEE NHTSA GET STRICT WITH AUTOMOTIVE MANUFACTURERS. WHAT WILL IT TAKE BEFORE SOMEONE LISTENS TO THE CONSUMER, A DEATH? THAT COULD HAVE EASILY BEEN MY FATE; LUCKILY, IT HAPPENED WHEN EXITING THE FREEWAY.

NHTSA ODI #10747094

125,000 miles · Dec 10, 2014
Power TrainSeat Belts

STEERING WHEEL MALFUNCTIONS, CAR TURNS OFF WHEN WHEEL IS EXTENDED TOO FAR TO THE LEFT. SEATBELTS FOR LAST ROW OF SEATS DON'T LOCK, RADIO IS STUCK, BUTTONS DON'T CONTROL RADIO PROPERLY. *TR

NHTSA ODI #10663304

70,000 miles · Mar 16, 2010
Power Train

TRANSMISSION LINE LEAK. PASSENGER SIDE FENDER WELL. CORROSION ON 1 LINE. *TR

NHTSA ODI #10320322

2,100 miles · Oct 23, 2005
Power Train

BRAND NEW 2005 CHEVROLET TRAILBLAZER TRANSMISSION WONT DOWNSHIFT BACK INTO LOW GEAR UPON COMING TO A STOP. DEALER SAID THEY FIXED THE PROBLEM THE FIRST TIME IT HAPPENED (AT 600 MILES) BY REPLACING A SENSOR. IT HAS JUST NOW STARTED HAPPENING AGAIN (AT 2,100 MILES). *NM

NHTSA ODI #10140521

5,300 miles · Aug 29, 2005
Power Train

I BOUGHT A 05 TB-EXT LAST JUNE, I NO SOONER GOT 5 MILES DOWN THE HIGHWAY (8 MILE TOTAL ON OD) WHEN I STARTED TO FEEL SOMETHING FUNNY, I WAS PUSHING ON THE GAS, BUT IT WAS LOOSING SPEED TRAFFIC WAS BACKING UP BEHIND ME AS I PULLED OFF THE ROAD. I HAD IT TOWED TO BACK TO THE DEALERSHIP WHERE I WAS ASSURED THAT IT WAS A TRANNY LIN…

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I BOUGHT A 05 TB-EXT LAST JUNE, I NO SOONER GOT 5 MILES DOWN THE HIGHWAY (8 MILE TOTAL ON OD) WHEN I STARTED TO FEEL SOMETHING FUNNY, I WAS PUSHING ON THE GAS, BUT IT WAS LOOSING SPEED TRAFFIC WAS BACKING UP BEHIND ME AS I PULLED OFF THE ROAD. I HAD IT TOWED TO BACK TO THE DEALERSHIP WHERE I WAS ASSURED THAT IT WAS A TRANNY LINE THAT WAS NOT PROPERLY SECURED AT THE FACTORY. NOW 3 MONTHS LATER, (5300 TOTAL ON OD) MY KIDS AND I WERE DRIVING ON THE FREEWAY YESTERDAY AT 65 MPH WHEN THE RPM'S SHOT UP TO 4500-5000, AND IT WAS LOOSING SPEED. THERE WAS NOT ANY WARNING SIGNS GOING OFF. I WAS IN THE MIDDLE LANE OF A 5 LANE FREEWAY (I-580 WEST) I PULLED OVER ON THE SHOULDER AND CHECKED THE FLUID LEVEL, IT WAS FINE. I PUT THE CAR IN DRIVE I STARTED TO GET BACK ON TO THE FREEWAY, 1ST AND 2ND ENGAGED JUST FINE, BUT AS SOON AS I GOT UP TO AROUND 35 MPH THE RPM SHOT UP AGAIN AND IT WOULD NOT SHIFT TO THIRD. I HAD TO USE THE ON STAR FOR THE SECOND TIME IN 3 MONTHS TO HAVE IT TOWED. *JB

NHTSA ODI #10134675

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.