One problem related to underhood wiring has been reported for the 2005 GMC Sierra 2500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 GMC Sierra 2500 based on all problems reported for the 2005 Sierra 2500.
Wiring harness from blower motor to resistor pack located in the heater coil area under the dash on the passenger side of vehicle. This was repaired by the dealer once or twice before as far as we can see.
| Electrical System problems | |
| Instrument Panel problems | |
| Dashboard Failed problems | |
| Wiring problems | |
| Ignition Switch problems | |
| Underhood Wiring problems |