Workshop Repair and Service Manuals GMC SIERRA
Articles

Electrical System

Instrument Panel Fuse Block      The instrument panel fuse block access door is located on the driver side edge of the instrument panel. Pull off the cover to access the fuse block. The vehicle may not be equipped with all of the fuses,...
Engine Compartment Fuse Block      If the vehicle has a diesel engine, see the Duramax Diesel supplement for more information. If the vehicle is a hybrid, see the hybrid supplement for more information. The Engine Compartment Fuse Block is located in the...
Electrical System Overload      The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load...
Headlamp Wiring      An electrical overload may cause the lamps to go on and off, or in some cases to remain off. Have the headlamp wiring checked right away if the lamps go on and off or remain off.
Windshield Wipers      If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart. Although the circuit is protected from electrical overload, overload due to heavy snow or...
Fuses and Circuit Breakers      If the vehicle is a hybrid, see the hybrid supplement for more information. The wiring circuits in the vehicle are protected from short circuits by a combination of fuses, circuit breakers and fusible thermal links. This...