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CarsLore / Makes / Chevrolet / Trailblazer EXT

Chevrolet Trailblazer EXT

Model years 2002–2006 in the US safety record. No model year stands out in owner complaints.

863owner complaints
9recall campaigns
499service bulletins
4model years on record

Complaints by model year

Each bar is one model year. The most recent years are still collecting complaints.

’02’04’02’06

NHTSA ODI complaints (public domain) · updated 23 Oct 2026

Year by year

Model yearComplaintsRecallsBulletinsCrashes · fires
2006 Trailblazer EXT18961652 · 2
2004 Trailblazer EXT26111256 · 3
2003 Trailblazer EXT31331167 · 6
2002 Trailblazer EXT1003933 · 2

A model year gets its own page when it has enough data for at least three sections

Most common problems

  • Electrical system277
  • Fuel system, gasoline234
  • Power train92
  • Exterior lighting57
  • Engine and engine cooling50
  • Visibility49
  • Structure41
  • Fuel system, other34

NHTSA ODI complaints, all model years

Fuel consumption by year

Official Canadian test results for 5 model years, best variant per year. Combined consumption ranges from 14.3–15.3 L/100 km.

YearVariantEngineTransmissionCityHighwayCombinedCO₂ g/km
2006TrailBlazer EXT · Sport utility vehicle · Regular gasoline5.3 L, 8 cyl.A416.511.514.3329
2005TrailBlazer EXT · Sport utility vehicle · Regular gasoline5.3 L, 8 cyl.A417.612.615.3352
2004TrailBlazer EXT 4X4 · Sport utility vehicle · Regular gasoline4.2 L, 6 cyl.A417.212.315.0345
2003TrailBlazer EXT · Sport utility vehicle · Regular gasoline4.2 L, 6 cyl.A417.312.515.1347
2002TrailBlazer EXT 4X4 · Sport utility vehicle · Regular gasoline4.2 L, 6 cyl.A417.112.014.8340

Litres per 100 km. Natural Resources Canada, Fuel consumption ratings (open.canada.ca) · Open Government Licence – Canada

Recalls

9 campaigns cover the Trailblazer EXT.

15V599000 · Visibility24 Sept 2015 · 2006

General Motors LLC (GM) is recalling certain model year 2006-2007 Buick Rainier, Chevrolet Trailblazer and GMC Envoy vehicles, and 2006 GMC Envoy XL and Chevrolet Trailblazer EXT vehicles. Fluid may enter into the driver's door master power window switch module, causing corrosion that could result in a short in the circuit board, causing window switches to become inoperative. Previously, the affected vehicles may have had their master power window switch module treated with a protective coating, instead of having it replaced.

15V519000 · Exterior lighting14 Aug 2015 · 2006

General Motors LLC (GM) is recalling certain model year 2007 Pontiac Grand Prix, 2006-2009 Buick LaCrosse, 2006-2007 Buick Rainier, Chevrolet Trailblazer, GMC Envoy, 2006 Chevrolet Trailblazer EXT, GMC Envoy XL, 2006-2008 Isuzu Ascender, and Saab 9-7x vehicles. In the affected vehicles, the headlamp driver module (HDM) may overheat and fail, causing the headlamps and daytime running lights to not illuminate.

14V404000 · Visibility2 Jul 2014 · 2006

General Motors LLC (GM) is recalling certain model year 2005-2007 SAAB 9-7x; 2006 Chevrolet Trailblazer EXT and GMC Envoy XL; and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier and Isuzu Ascender vehicles. Fluid may enter the driver's door master power window switch module, causing corrosion that could result in a short in the circuit board. A short may cause the power door lock and power window switches to function intermittently or become inoperative. The short may also cause overheating, which could melt components of the door module, producing odor, smoke, or a fire.

13V248000 · Visibility13 Jun 2013 · 2006

General Motors (GM) is recalling certain model year 2005-2007 SAAB 9-7x; 2006 Chevrolet Trailblazer EXT and GMC Envoy XL; and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier and Isuzu Ascender vehicles. Fluid may enter the driver's door module, causing corrosion that could result in a short in the circuit board. A short may cause the power door lock and power window switches to function intermittently or become inoperative. The short may also cause overheating, which could melt components of the door module, producing odor, smoke, or a fire.

05V552000 · Equipment7 Dec 2005 · 2006

CERTAIN TRUCKS AND SPORT UTILITY VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 110, "TIRE SELECTION AND RIMS." THESE VEHICLES WERE SHIPPED WITH TIRE AND LOADING INFORMATION LABELS LISTING AN INACCCURATE VEHICLE CAPACITY WEIGHT.

05V494000 · Latches/locks/linkages27 Oct 2005 · 2002, 2003

CERTAIN SPORT UTILITY VEHICLES HAVE A REAR SIDE CLOSURE LATCH THAT MAY NOT LATCH OR UNLATCH DUE TO CORROSION CAUSED BY ROAD SPLASH, SUCH AS WATER AND ROAD SALT. THESE VEHICLES WERE ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE FOLLOWING STATES: CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN, AND THE DISTRICT OF COLUMBIA.

05V455000 · Steering5 Oct 2005 · 2006

CERTAIN PASSENGER VEHICLES MAY HAVE BEEN BUILT WITH A POWER STEERING HOSE THAT IS NOT TO SPECIFICATION. UNDER EXTREME STEERING MANEUVERS, SUCH AS TURNING THE STEERING WHEEL FULLY TO THE LEFT OR RIGHT WHILE BRAKING, THE HOSE MAY FRACTURE AND LEAK FLUID.

04V527000 · Exterior lighting1 Nov 2004 · 2002, 2003, 2004

ON CERTAIN SPORT UTILITY VEHICLES, VIBRATION AND HEAT MAY CAUSE THE TAIL LAMP/STOP LAMP BULB TO LOOSEN IN ITS SOCKET. IF THIS OCCURS, THE BULB MAY FLICKER AND EVENTUALLY BECOME INOPERATIVE.

04V046000 · Visibility4 Feb 2004 · 2002, 2003

CERTAIN SPORT UTILITY VEHICLES HAVE WINDSHIELD WIPER SYSTEMS THAT WILL NOT TURN ON, CEASE OPERATION WHILE IN USE, FAIL TO TURN OFF/ON BY THEMSELVES (MOISTURE SENSITIVE WIPER SYSTEM), OR HAVE CONTINUOUS WINDSHIELD WASHER PUMP OPERATION BECAUSE THE PRESENCE OF WATER WITHIN THE WIPER MODULES CAN EITHER CAUSE A SHORT CIRCUIT OR CAN LEAD TO THE CORROSION OF COMPONENTS WITHIN THE MODULE.

NHTSA recalls