GMC Sierra 1500 owners have reported 3 problems related to underhood wiring (under the electrical system category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of GMC Sierra 1500 based on all problems reported for the Sierra 1500.
The contact owns a 2005 GMC Sierra 1500 pickup truck. While driving, he could smell a burning odor coming from the inside of the vehicle. The dealer found that there was a shortage and a melted harness assembly. The blower resistor and harness assembly were replaced at the owner's expense. The manufacturer was contacted and could only offer a 15,000 mile extended warranty. The current and failure mileages were under 48,198. Updated 02/23/10. Updated 08/12/jb.
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I was driving my 2005 GMC Sierra 1500 truck and the cab filled with smoke the a small fire developed on the wire bundle that connects to the fan blower under the dash passenger side. I had to pull over and pry the burnt connector off of the resistor / blower hook up. The fuse did not work and the connector continued to burn until I shut off the truck and remove the connector. I plan to take the truck into skillman GMC since a fuse did not blow prior to the burning of the wiring. Also I did a brief search and found others had similar issues with either the GMC sierra and the chevy silverado truck.
Gas gauge acted erratically. Warming up vehicle while sitting in idling position for about 10 minutes and all of sudden heard a loud noise. Vehicle stopped running, smoke was coming out from around the fuel tank. Contacted dealer. Still under warranty, was told that the wiring harness that is attached to the fuel tank had a short, it was melted.
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