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Home >> GMC >> 1971 >> K35/K3500 Pickup 5.7L Eng, Not Available Trans, LPG >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Computer Command Control >> Maintenance & Testing >> Reversing Relay
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Reversing Relay

Make sure all wires are connected to reversing relay and to transmission switch. A loose wire could cause solenoid to remain energized. Turn ignition on and remove purple wire from reversing relay, solenoid should de-energize. If solenoid de-energizes, reversing relay is faulty.