Power Door Lock Fuse Blowing

1997 chevrolet c3500 ive recently had the dash apart to fix the defrost diverter.

Power door lock fuse blowing.

When i got home i noticed the fuse for the door locks was blown. Power door lock fuse keeps blowing. The door locks also get power from the fuse relay panel under the hood on the drivers side. You probably have a wire shorted to ground somewhere.

Finding the source of a dead short that keeps blowing fuses can often be a real headache. This will be tedious but may id source of current draw. Find out why a lack of any movement in door locks is most likely a result of a blown. My door lock and window lock keep blowing my fuses it is blowing fuses for a reason.

Slightly easier you could also inspect the wiring for a short very low resistance to ground and trace the short. Which blew the fuse within 15 miles. Iv since had the dash back apart and replaced the door lock relay. Worked fine for a week until i hooked up my camper again.

50 amp fuse b 2 provides power to the locks tail lights sunroof if you have one stop lights tailgate fog lamps if equipped and interior lamps. I hooked up my camper and a few mile down the road i could smell electric burning. Essentially the fuse takes a large amount of electrical current and converts it into a smaller more manageable amount of current that the door lock actuator can have. Power door locks are prone to failures due to electrical interruptions corrosion broken wires or blown fuses.

Haven t found the door lock relay itself yet however. There are three primary components of the power door lock system that can fail resulting in a useless power door lock. Suggest starting w power lock solenoid and see if it is drawing too much current and blowing fuse. A fuse is a low resistance resistor that creates overcurrent protection.

Remove door panel and route current flow through multimeter rated for 20a.