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.
2002 Chevrolet Tracker 2D Utility, RWD, AutomaticFACTORY OEM SERVICE PROCEDURE
Test Description
The numbers below refer to the step numbers in the diagnostic procedure.
- 1
The DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS, prompts technician to complete some basic checks and store "Freeze Frame" data on scan tool if applicable. This creates an electronic copy of data taken when fault occurred. Information is then stored in scan tool for later reference. - 6
This step will verify whether PCM is not providing a ground path for main relay circuit. When terminal No. 2 of main relay is grounded, main relay turns on. - 9
This step checks for ignition positive voltage at PCM. PCM will not operate main relay if there is no power to terminal No. 20. - 11
This step checks for an open in PCM electrical grounds. PCM will not operate main relay if there are no electrical grounds.
Factory Service Tools
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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.