VehicleVerdict

2003 Chevrolet Trailblazer Ext problems

Verdict · NHTSA data

Worth extra scrutiny

The 2003 Chevrolet Trailblazer Ext sits mid-pack among Trailblazer Ext years: 406 NHTSA complaints against a model median of roughly 272, with 3 recalls and 6 closed investigations. Complainants reported 11 injuries in total across these filings.

No single system dominates the record — complaints spread across fuel system (96), electrical system (80), and transmission (53), which usually points to general build quality rather than one defect.

406

NHTSA complaints

3

Recalls

6

Investigations

8

Crash-involved

7

Fires reported

11

Injuries

0

Deaths

—

NCAP overall

How does 2003 compare to other Trailblazer Ext years?

Trailblazer Ext NHTSA complaints by model year, 2003 highlighted406 complaints2002: 120 complaints2003: 406 complaints2004: 306 complaints2006: 238 complaints
Trailblazer Ext NHTSA complaints by model year, 2003 highlighted. Red bars are years to avoid.

See all Trailblazer Ext years to avoid →

What are the most common 2003 Chevrolet Trailblazer Ext problems?

ComponentComplaintsShare
Fuel System9624%
Electrical System8020%
Transmission5313%
Visibility & Wipers287%
Body & Structure256%
Lighting256%
Engine184%
Suspension164%
Brakes133%
Latches & Locks133%
Other102%
Speed Control72%
Airbags61%
Steering61%
Seats51%
Seat Belts31%
Tires & Wheels20%

Does the 2003 Chevrolet Trailblazer Ext have recalls?

3 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.

05V494000Latches & LocksOctober 27, 2005 · 98,007 units

Defect

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.

Consequence

IF THE DOOR IS NOT LATCHED PROPERLY AND IT GOES UNNOTICED, IT MAY OPEN WHILE THE VEHICLE IS IN MOTION. IF AN UNBELTED OCCUPANT FELL OUT OF THE VEHICLE, PERSONAL INJURIES COULD OCCUR.

Remedy

DEALERS WILL INSTALL A SEAL ALONG THE LOWER PART OF THE ROCKER PANEL TO PREVENT INTRUSION OF CORROSIVE MATERIAL, AND INSPECT THE REAR SIDE CLOSURE LATCHES. FUNCTIONAL LATCHES WILL BE CLEANED AND LUBRICATED. NON-FUNCTIONING LATCHES WILL BE REPLACED. THE RECALL BEGAN ON FEBRUARY 24, 2006. OWNERS MAY CONTACT CHEVROLET AT 1-800-630-2438, GMC AT 1-866-996-9463, OR ISUZU AT 1-800-255-6727.

04V527000LightingNovember 1, 2004 · 871,473 units

Defect

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.

Consequence

AN INOPERATIVE BRAKE LAMP WILL NOT CONVEY THE DRIVER'S INTENTION OF STOPPING TO DRIVERS IN FOLLOWING VEHICLES, AND AN INOPERATIVE REAR TURN SIGNAL LAMP WILL NOT CONVEY THE DRIVER'S INTENTION TO TURN TO DRIVERS IN FOLLOWING VEHICLES. BOTH OF THESE FAILURES CAN INCREASE THE RISK OF A CRASH.

Remedy

DEALERS WILL INSPECT THE TAIL LAMP/STOP LAMP ASSEMBLIES, AND IF NECESSARY, REPLACE THEM. THE RECALL BEGAN ON NOVEMBER 22, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438, OLDSMOBILE AT 1-800-630-6537, BUICK AT 1-866-608-8080, OR GMC AT 1-866-996-9463.

04V046000Visibility & WipersFebruary 4, 2004 · 581,394 units

Defect

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.

Consequence

DEPENDING ON THE OCCURRENCE AND WEATHER SITUATION, DRIVER VISIBILITY COULD BE REDUCED, WHICH COULD RESULT IN A CRASH.

Remedy

DEALERS WILL COVER THE WINDSHIELD WIPER MODULE VENT HOLE WITH A PATCH. ALSO, THE WIPER MOTOR, CIRCUIT BOARD, AND ELECTRICAL CONNECTOR WILL BE INSPECTED TO SIGNS OF WATER INTRUSION AND/OR CORROSION AND BE REPLACED AS REQUIRED. THE RECALL BEGAN JULY 6, 2004. OWNERS SHOULD CONTACT CHEVROLET AT 1-800-630-2438; OLDSMOBILE AT 1-800-630-6537; OR GMC AT 1-866-996-9463.

Consumer complaints filed with NHTSA

Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.

“2003 TRAILBLAZER EXT, BEGAN TO HAVE STRONG ODOR OF GASOLINE AFTER OPERATION. NO SIGNS OF VISIBLE GAS NOTED UNDER VEHICLE. PROBLEM PERSISTED, (APPROX 1 MONTH) AND GASOLINE BECAME OBVIOUS IN LIQUID FORM DRIPPING FROM BOTTOM OF TANK AND FRAMING OF VEHICLE. VEHICLE TAKEN TO LOCAL MECHANIC AND…”

Complaint filed with NHTSA · Fuel System · June 1, 2008

“DRIVING AT 40MPH AND THE TRUCK WENT UP IN FLAMES TRUCK SHOWED NO WARNING EVEN DROVE IT APP. 300YARDS TO PULL OVER STILL RAN WITH FLAMES AS HIGH AS 6 FT NO DUMMY LIGHTS CAME FIRE WAS UNDER THE TRUCK WHILE DRIVING WAS WARNED BY ANOTHER DRIVING HEADING TOWARDS ME TRUCK HAD 85130 MILES ON IT NEVER HAD…”

Complaint filed with NHTSA · Electrical System · January 25, 2012 · fire

“WHILE PUTTING THE VEHICLE IN 4-WHEEL DRIVE IT BEGAN TO ACCELERATE. VEHICLE RAN INTO A GUARD RAIL AND ROLLED DOWN INTO A DITCH. OWNER CONTACTED THE DEALER, WHO SAID IT WAS THE FAULT OF THE DRIVER. LATER, DEALER CONTACTED THE OWNER, AND INFORMED HIM THAT THE 4-WHEEL DRIVE KEY WAS BROKEN. *AK *BF *NM”

Complaint filed with NHTSA · Transmission · February 5, 2005 · crash

“STOPPED AT A STOP LIGHT THE CAR WOULD NOT GO FORWARD WOULD GO BACKWARDS HAD JUST HAD TRANSMISSION REPLACED 1 YEAR BEFORE ONLY HAD 79K MILES BOUGHT THE CAR BRAND NEW BOTH DRIVER WINDOW MOTORS HAVE GONE OUT SEAL TO FRONT DRIVER DOOR TRANSMISSION REPLACE PWR STEERING--RACK AND PINIONS AND USUALLY HAVE…”

Complaint filed with NHTSA · Visibility & Wipers · February 17, 2009

“DT: THE OWNER WENT TO OPEN THE GLASS ON THE TAILGATE ,AND WHEN THE OWNER HAD HER HAND ON THE HANDLE TO LIFT THE GLASS IT EXPLODED FROM THE TAILGATE. THE WERE NO PRIOR PROBLEMS WITH THE TAILGATE. DEALER REPLACED THE GLASS WHICH WAS COVERED UNDER WARRANTY. THE OWNER'S CHILD SUSTAINED INJURIES IN THIS…”

Complaint filed with NHTSA · Body & Structure · May 10, 2005

2003 Chevrolet Trailblazer Ext — common questions

Is the 2003 Chevrolet Trailblazer Ext reliable?

It is close to typical for the Trailblazer Ext: 406 NHTSA complaints, 3 recalls, and 6 investigations on file.

What are the most common 2003 Trailblazer Ext problems?

According to NHTSA complaint data, the leading problem areas are fuel system (96 complaints), electrical system (80 complaints), transmission (53 complaints).

Does the 2003 Chevrolet Trailblazer Ext have recalls?

Yes — NHTSA lists 3 recall campaigns affecting the 2003 Chevrolet Trailblazer Ext. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Is the 2003 Chevrolet Trailblazer Ext under NHTSA investigation?

NHTSA opened 6 investigations into this model year; all are now closed.

Related

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.