Question about 2003 GMC Sierra 2500HD
Replace the headlight dimmer switch on the steering column and check the connector to it fro signs of overheating, replace connector and switch as one repair. Do not use crimp connectors, solder all wires as needed and use shrink tube to insult the solder joints.
Posted on Feb 22, 2012
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Posted on Jan 02, 2017
the encoder motor sensor is inside the encoder motor. the encoder is located at the transfer case. Remove the encoder and by part number 88962315 this is the sensor. you will have to retime the motor after
hope this helps
Posted on May 06, 2009
Check voltage at the circuit box and test the high/low dimmer switch. Corrosion on a ground wire could also be the problem.
Posted on May 19, 2009
Check your headlamp relays under the hood, should be located on either the L/H or R/H fender well , could be inside a black plastic box labled fuses and relays... there will be a label on the underside of the lid to this box locate the relays as per lables... please rate my help thanks...
Posted on Aug 06, 2009
The horn pad is made of vinyl which contracts through the four seasons causing this problem for some. Remove the horn pad with the battery disconnected first of all. Use a jumper wire to see if the horn works. If id does check the horn relay next. If ok hot wire the horn direct. One should be your problem or it is a broken wire instead
Posted on Apr 04, 2010
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