Replacement Guide / Chevrolet / TrailBlazer / 2003
Replacement guide
2003 Chevrolet TrailBlazer
Owner-reported component and symptom data for this model year.
What are you trying to fix?
Replacement-related components reported for this vehicle
23 owner reports involving the brake lights
View replacement guide19 owner reports involving the cooling fan
View replacement guide13 owner reports involving the fuel pump
View replacement guide10 owner reports involving the wiper motor
View replacement guide9 owner reports involving the headlights
View replacement guide5 owner reports involving the power window regulator
View replacement guide3 owner reports involving the battery
View replacement guide3 owner reports involving the tie rod
View replacement guide3 owner reports involving the ball joint
View replacement guide2 owner reports involving the starter
View replacement guide2 owner reports involving the alternator
View replacement guide2 owner reports involving the brake rotor
View replacement guide2 owner reports involving the door latch
View replacement guide2 owner reports involving the water pump
View replacement guide2 owner reports involving the thermostat
View replacement guide1 owner report involving the catalytic converter
View replacement guide1 owner report involving the hvac blower motor
View replacement guide1 owner report involving the brake pads
View replacement guide1 owner report involving the brake caliper
View replacement guide1 owner report involving the master cylinder
View replacement guide1 owner report involving the wheel bearing
View replacement guide1 owner report involving the ignition coil
View replacement guide1 owner report involving the oxygen sensor
View replacement guide1 owner report involving the throttle body
View replacement guideBrowse by system
Starting / charging
- Battery — 3 owner reports
- Starter — 2 owner reports
- Alternator — 2 owner reports
Fuel / engine
- Fuel pump — 13 owner reports
- Catalytic converter — 1 owner report
- Ignition Coil — 1 owner report
- Oxygen Sensor — 1 owner report
- Throttle Body — 1 owner report
Cooling / HVAC
- Cooling fan — 19 owner reports
- Water Pump — 2 owner reports
- Thermostat — 2 owner reports
- HVAC blower motor — 1 owner report
Brakes
- Brake rotor — 2 owner reports
- Brake pads — 1 owner report
- Brake caliper — 1 owner report
- Master cylinder — 1 owner report
Steering / suspension
- Tie rod — 3 owner reports
- Ball joint — 3 owner reports
- Wheel bearing — 1 owner report
Lighting / visibility
- Brake lights — 23 owner reports
- Wiper motor — 10 owner reports
- Headlights — 9 owner reports
Body / access
- Power window regulator — 5 owner reports
- Door latch — 2 owner reports
About this data
Component evidence comes from structured complaint categories and reviewed component mentions in complaint summaries. Owner-situation evidence comes from reviewed symptom language in complaint summaries. Reports are signals, not diagnoses.
How to read the counts
Counts are distinct owner reports involving a canonical component. They are not a failure rate, probability, or share of vehicles sold. A complaint involving a component does not prove that component caused the problem. Parent NHTSA system buckets are not counted as the part itself.