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 MANUALSCHEVROLET1985BLAZER 5.0 H, STANDARD, MY6REPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSOVERHAUL & TESTING - 700-R4/4L60SERVICE BULLETINSPOSSIBLE BLOWN FUSES ON CIRCUITS 420, 422 OR 446 DUE TO SHORTED TCC WIRINGCHECKING VEHICLE FOR SHORT TO GROUND
1985 Chevrolet Blazer 5.0 H, Standard, MY6
Checking Vehicle For Short To Ground
1985 Chevrolet Blazer 5.0 H, Standard, MY6SECTION Checking Vehicle For Short To Ground
- Turn off ignition. Unplug TCC wiring harness at transmission. Replace blow fuse.
- Start engine. Check if short circuit is still present. If so, TCC wiring is probably not the cause. If short circuit is not present, continue with diagnosis.
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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.