Question about GMC Sierra 1500
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Posted on Jan 02, 2017
SOURCE: Block Heater not working
There is no fuse on a block heater. It is an extension cord with a resistor (element) on the end (see photo. If it not working, the resistor (coil) has failed. A new block heater is required.
Before replacing, however, check the outlet and/or beaker the outlet is on to see if it has tripped.
I too live in s/e Michigan, and it was -19 this am. No block heater can keep up with these extreme temps.
Posted on Jan 16, 2009
The fuse is actually a Relay Switch and its located in the Fuse Relay Center on the driverside of the engine compartment. The Black Box is labled Fuse Relay Center, the diagram on the cap displays which Relay is the Fuel Pump relay...the Relay switch is usually $8-$15 depending on where you shop
Posted on Jul 28, 2009
SOURCE: wiring diagram 2003 GmC Sierra
I need wiring digram for GMC 2003 SIERRA . I have the left head light working fine but the right I have no power to it. I have checked the fuses and relaysand so far have not found and broken or frayed wires.
Posted on Mar 06, 2010
The brake light switch is at fault. Get a new one and replace it. The location is at the brake pedal area mounted on a bracket with a plunger stud that rest on the brake pedal's arm the pad is attached to
Posted on May 08, 2010
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Fuse block inside truck
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