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.
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HOMESERVICE MANUALSCHEVROLET1990STEP VAN 6.2 J, AUTOMATIC, 3L80-HD/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONMAINTENANCE REMINDER LIGHT (RESET PROCEDURES)ENGINE OIL REPLACEMENT REMINDERENGINE OIL REPLACEMENT REMINDER RESET - PROCEDURE 22WITHOUT DIC
1990 Chevrolet Step Van 6.2 J, Automatic, 3L80-HD/M40
Without DIC
1990 Chevrolet Step Van 6.2 J, Automatic, 3L80-HD/M40SECTION Without DIC
- With the engine OFF, turn the ignition key to RUN.
- Fully press and release the accelerator pedal slowly three times within five seconds.
- Turn the key to OFF, then start the vehicle.
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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.