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.

2000 Chevrolet Prizm Base, StandardFACTORY OEM SERVICE PROCEDURE

Powertrain Control Module: Prizm

Power for PCM is supplied from EFI fuse (15-amp) through EFI relay located in relay/fuse box. PCM memory power is supplied from EFI fuse (15-amp). PCM distributes power and controls ground of various sensors, switches and solenoids for engine control. See Figure-Figure .

NOTE: Components are grouped into 2 categories. First category is INPUT DEVICES, which are components that control or produce voltage signals monitored by PCM. Second category is OUTPUT SIGNALS, which are components controlled by PCM.

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.