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.
1988 Chevrolet Sprint TurboFACTORY OEM SERVICE PROCEDURE
ECM Ground Circuits Check
- To check that ECM is grounded to body and transaxle, turn ignition switch off. Disconnect coupler from ECM (under left side of dash).
- Connect an ohmmeter between terminal No. 18 (Black wire) and No. 9 (Black/Green) and body ground. Measure resistance between terminals No. 18 and No. 9 and body. If resistance is zero, ECM is properly grounded.
- If resistance is not zero, check body ground at left kick panel, transaxle ground near gear shift guide case and ECM connections. After ensuring ECM is grounded, reconnect ECM coupler.
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.