2003 Chevrolet Trailblazer

Typical pattern

10.3% of complaints about the 2003 Chevrolet Trailblazer came in the first year, which is unremarkable for a 2003 vehicle — around the middle of the 228 model-years on record. The median complaint arrives at 6.1 yr in service. The most-reported system is electrical system (287 complaints), typically at 7.2 yr or about 80,000 miles.

Complaints: 1,138
Median age at failure: 6.1 yr
Median mileage: 73,750 n=876
Crash / fire / tow: 10.4% of reports
Safety recalls: 8

When each system is reported — middle 50% of complaints

System

0y2y4y6y8y10y12y14y

Electrical system

287 reports · 80,000 mi

7.2 yr

5.6%

Fuel system

118 reports · 73,500 mi

5.4 yr

1.7%

Power train

110 reports · 70,000 mi

4.2 yr

5.5%

Exterior lighting

79 reports · 74,048 mi

5.6 yr

6.3%

Visibility

66 reports · 67,710 mi

5.2 yr

1.5%

Engine cooling

65 reports · 49,890 mi

4.3 yr

3.1%

Air bags

59 reports · 99,000 mi

8.1 yr

83.1%

Fuel / propulsion

55 reports · 140,000 mi

12.5 yr

5.5%

Structure

40 reports · 68,000 mi

7.3 yr

12.5%

Suspension

34 reports · 35,334 mi

3.7 yr

11.8%

Steering

27 reports · 32,000 mi

3.8 yr

14.8%

Equipment

25 reports · 30,000 mi

1.3 yr

Safety recalls — NHTSA campaigns

05V198000 2005-05-05

Exterior lighting:turn signal

ON CERTAIN TRUCKS AND SPORT UTILITY VEHICLES, THE DRIVER WISHING TO SIGNAL A TURN BY MOVING THE DIRECTIONAL SIGNAL LEVER, (UP OR DOWN) MAY CAUSE THE FRONT MARKER/TURN LIGHTS AND REAR TURN LIGHTS TO FLASH IN A MANNER SIMILAR TO HAZARD WARNING, RATHER THAN FLASHING ON THE DESIRED SIDE ONLY.

THE DRIVER MAY NOT BE ABLE TO CLEARLY SIGNAL THEIR INTENTIONS TO TURN, CHANGE TRAVEL LANES, OR POTENTIALLY WARN OTHERS OF AN IMPAIRED VEHICLE OPERATING CONDITION INCREASING THE RISK OF A CRASH.

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.

03V250000 2003-07-15

Equipment:other:owners/service/other manual

CERTAIN MINIVANS, PASSENGER AND SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, "CHILD RESTRAINT ANCHORAGE SYSTEM." THE OWNER'S MANUAL DOES NOT EXPLAIN THE MEANING OF THE LOCATION SYMBOLS FOR THE CHILD RESTRAINT LOWER UNIVERSAL ANCHORAGE SYSTEM.

THIS DOES NOT MEET THE REQUIREMENTS OF THE STANDARD.

03V151000 2003-04-23

Service brakes, hydraulic:foundation components:hoses, lines/piping, and fittings

CERTAIN SPORT UTILITY VEHICLES WERE BUILT WITH A LEFT-FRONT BRAKE PIPE WITH A CIRCUMFERENTIAL SCORE AT A RANDOM LOCATION ALONG THE LENGTH OF THE PIPE AS THE RESULT OF THE MANUFACTURING PROCESS. IF THE BRAKE PIPE PARTIALLY OR FULLY FRACTURED, BRAKE PEDAL TRAVEL WOULD IMMEDIATELY INCREASE AND FRONT BRAKE PERFORMANCE WOULD BE REDUCED.

IF BRAKING PERFORMANCE IS REDUCED, A CRASH COULD OCCUR.

03V075000 2003-03-06

Power train:automatic transmission

CERTAIN SPORT UTILITY VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 114, "THEFT PROTECTION." THESE VEHICLES ARE EQUIPPED WITH A MECHANICAL OVERRIDE THAT COULD ALLOW THE IGNITION KEY TO BE REMOVED WITH THE SHIFT LEVER IN A POSITION OTHER THAN PARK. IN ADDITION, THESE VEHICLES HAVE AN OVERRIDE THAT CAN ALLOW THE TRANSMISSION TO BE SHIFTED OUT OF PARK WITH THE IGNITION IN THE OFF POSITION.

THESE OVERRIDES ARE NOT PERMITTED UNLESS THE VEHICLE HAS A LOCKING STEERING COLUMN.

03V051000 2003-02-14

Air bags:frontal:driver side:inflator module

ON CERTAIN MINI VANS, PASSENGER AND SPORT UTILITY VEHICLES, SOME OF THESE VEHICLES HAVE A DRIVER'S SIDE AIR BAG THAT MAY NOT DEPLOY AS DESIGNED. IN ADDITION, THE AIR BAG INFLATOR COULD RUPTURE.

THIS COULD RESULT IN REDUCED CAPABILITY OF THE AIR BAG TO PROTECT THE DRIVER. ALSO IF THE AIR BAG INFLATOR RUPTURED, PIECES OF THE INFLATOR COULD STRIKE AND INJURE THE VEHICLE OCCUPANTS.

02V222000 2002-08-09

Air bags:frontal

CERTAIN PASSENGER, MINI VANS, AND SPORT UTILITY VEHICLES HAVE AN AIR BAG INFLATOR ON THE DRIVER'S SIDE THAT COULD FRACTURE AT A WELD DURING A DEPLOYMENT.

PIECES OF THE INFLATOR COULD STRIKE AND INJURE VEHICLE OCCUPANTS AND THE AIR BAG CUSHION WOULD NOT INFLATE FULLY, REDUCING THE CAPABILITY OF THE BAG TO PROTECT THE DRIVER.

In owners’ own words

Power train mileage not reported 0 mo in service

COSUMER STATES THE VEHICLE FOUR WHEEL DRIVE WOULD NOT ENGAGE WHILE DRIVING. VEHICLE TAKEN TO THE DEALER FOR REPIRS AND THE PROBLEM WOULD REOCCUR. FEEL FREE TO PROVIDE ANY FURTHER INFORMATION.

Power train mileage not reported 4 mo in service crash / fire / tow

TRANSMISSION LOCKS UP, 4 WD LIGHTS MOVE ON ITS OWN, THIS HAS HAPPENED 4 TIMES SINCE I HAVE OWNED THIS CAR, I REQUESTED THAT I DO NOT WANT THIS CAR BACK, BUT THEY INSIST THEY FIXED THE PROBLEM, NOW WITH MY CHILDREN 2 AND 16 YEARS IN THE CAR THE 4WD LIGHT WAS MALFUNCTIONING AND THE CAR LOCKED UP AND WE SKID DOWN THE STREET. I DONOT WANT THIS CAR BACK, I FEEL IT WILL KILL ONE OR ALL OF US WITH THIS LOCK UP OF TRANSMISSION AND THE CAR WON'T MOVE THANK GOD IT HAS NOT HAPPENED ON THE FREWAY I FEEL WE WOULD BE DEAD. THE CARS A LEMO0N AND I AM NOT WAITING FOR IT TO HARM MY FAMILLY.

Power train 3,250 mi 8 mo in service

UPON CRANKING THE VEHICLE THE SERVICE 4WD INDICATOR LIGHT IN THE GAUGE CONSOLE AREA LIGHTS UP, WHILE AT THE SAME TIME THE SELECTOR LIGHT FOR WHICH SETTING THE TRANSFER CASE IS IN GOES OUT. THE SELECTOR SWITCH IS IN THE 2WD SETTING AND THERE WILL BE NO AMBER LIGHT INDICATING IT. YOU CAN SWITCH THE SELECTOR TO AWD OR 4WD OR BACK TO 2WD AND NO INDICATOR LIGHT. SOMETIMES IT CAN ME "FIXED" BY TURNING THE VEHICLE OFF AND RESTARTING THE ENGINE. *NLM

Air bags mileage not reported 2 mo in service crash / fire / tow

CONSUMER STATES THAT WHILE DRIVING APPROXIMATELY 35-40MPH SLID OFF ROAD AND CRASHED INTO A DITCH HEAD-ON. BOTH DRIVER AND PASSENGER AIR BAGS DID NOT DEPLOY. TS

Other Trailblazer 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.