2002 Chevrolet Trailblazer EXT

No clear pattern

0.8% of complaints about the 2002 Chevrolet Trailblazer EXT arrived in its first year of service. That is an unusual figure for a 2002 vehicle, but with only 120 complaints on record the sample is too small to call it a pattern — the margin of error covers the range where ordinary vehicles sit. The figures below are reported without a verdict. The most-reported system is fuel system (23 complaints), typically at 5.3 yr or about 75,000 miles.

Complaints: 120
Median age at failure: 5.3 yr
Median mileage: 64,000 n=97
Crash / fire / tow: 5.8% of reports
Safety recalls: 3

Safety recalls — NHTSA campaigns

05V494000 2005-10-27

Latches/locks/linkages:doors:latch

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.

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.

04V527000 2004-11-01

Exterior lighting:brake lights

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.

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.

04V046000 2004-02-04

Visibility:windshield wiper/washer

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.

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

In owners’ own words

Power train 51,000 mi 3.3 yr in service

MY TRANSMISSION WENT IN JANUARY OF 2005. IT IS NOW JULY AND THE SAME THING HAPPENED AGAIN. I HAD TO FIGHT WITH THE DEALERSHIP THEN BECAUSE I ONLY HAD THE VEHICLE FOR 4 MONTHS AND I AM FIGHTING WITH THEM AGAIN. IT IS THE SAME PROBLEM. IT WON'T SHIF OUT OF 1ST AND IT WON'T GO IN REVERSE AND THE LOUD NOISE IS HORRIBLE.

Power train 52,000 mi 3.8 yr in service

WHILE TAKING OFF FROM A TOLL BOOTH THERE WAS A BIG BANG AND THE TRANSMISSION WOULD NOT SHIFT INTO REVERSE AND MADE A VERY LOUD WHINNING NOISE WHE GOING FORWARD

Power train 43,000 mi 3.9 yr in service

SUN GEAR FAILED IN TRANSMISSION PUT INTO REVERSE WENT 6"-12" LOUD CLUNK COULD DRIVE AHEAD IN LOW GEAR 2002 TRAILBLAZER HAD 43,000 MILES. DEALER FIXED UNDER WARRANTY NO CHARGE BY REPLACING SUN GEAR. *JB

Fuel system 70,000 mi 4.1 yr in service

AFTER SMELLING GAS FUMES AND HAVING THE "SERVICE ENGINE SOON" LAMP ILLUMINATED, I TOOK MY 2002 CHEVROLET TRAILBLAZER EXT TO MY MECHANIC FOR SERVICE. THE ATTACHMENT FROM THE FUEL FILLER LINE AND THE GAS TANK WAS LOOSE. HE RELAYED THAT CHEVY WAS HAVING A LOT OF PROBLEMS WITH THIS. AFTER PURSUING THIS WITH GM, I FOUND A SPECIAL POLICY # 05012. GM WILL FIX THE PROBLEM ON VEHICLES WITH UP TO 70,000 MILES. MY VEHICLE HAS 72,000 MILES. GM REFUSES TO REPAIR THIS DEFECT. *JB

Other Trailblazer EXT model years

How to read this

This is what owners reported, not a reliability rating. People file with NHTSA about alarming failures, not routine ones, and complaint volume tracks how many cars were sold.
Failure ages come from the incident date on each complaint, populated on about 83% of records. Mileage is shown where reported — NHTSA’s 2021 system change cut mileage capture to roughly 15%, so it thins out sharply after MY2020.
Every rank compares this vehicle only against others of the same model year. A 2025 car has not had time to accumulate five-year failures, so comparing early-failure share across years is meaningless.
Fourteen make-months distorted by media storms and mass recalls — Toyota in February 2010 ran 11× normal volume across 33 models — are excluded.
Recalls are manufacturer actions and authoritative; complaints are not. A recall listed here may already have been performed on any individual car. Check a specific VIN at nhtsa.gov/recalls.

2002 Chevrolet Trailblazer EXT

When each system is reported — middle 50% of complaints

Safety recalls — NHTSA campaigns

In owners’ own words

Other Trailblazer EXT model years

How to read this