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.
1992 Geo Prizm Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Electronic Control Module (ECM): Tracker
Power for ECM is received from the taillight/dome fuse, located in fuse block. The ECM distributes power or controls ground of various sensor, switches and solenoids for engine control.
ECM LOCATION
| Application | Location | ||
|---|---|---|---|
| Metro | On Left Of Steering Column | ||
| Prizm | Behind Center Console, Under Heater Case | ||
| Storm | (1) On Left Of Steering Column | ||
| Tracker | Under Left Side Of Dash, Near Kick Panel | ||
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NOTE:
Components are grouped into 2 categories. The first category is INPUT DEVICES , which are components that control or produce voltage signals monitored by the control unit. The second category is OUTPUT SIGNALS , which are components controlled by the control unit.
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.