Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Chevrolet Tracker 2D Utility, RWD, AutomaticFACTORY OEM SERVICE PROCEDURE
Inspection/Maintenance System DTC
INSPECTION/MAINTENANCE SYSTEM DTCS
| System | DTCs Required To Set System Status To YES |
|---|---|
| Catalyst | P0420 |
| EGR System | P0401, P0402 Or P0403 |
| EVAP System | P0441, P0442, P0443, P0446, P0449, P0455 , P0496 , P2026 Or P2027 |
| Oxygen Sensor System | P0131, P0132, P0133, P0134, P0137, P0138 Or P0140 |
| Oxygen Sensor Heater | P0031, P0032, P0037 Or P0038 |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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