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Home >> GMC >> 1981 >> Forward Control 4.8L Eng VIN T, Standard Trans >> Repair and Diagnosis (Single Page) >> Electrical >> Motors, Switches, Relays >> Power Door Locks >> Trouble Shooting >> Door Locks Inoperative And Relay Clicks When Activated

Door Locks Inoperative And Relay Clicks When Activated

Check Light Blue and Black wires between switch and relay.