2005 GMC Sierra

Electrical problem
2005 GMC Sierra V8 Four Wheel Drive Automatic 56000 miles

My seat warmers have started to not work properly. The passenger will heat the back only. The drivers will heat the back and then cut off. When you try to have both sides on together they cut off. I do have full electric seats as well. I'm not sure which wires go to what or the fuses. The truck is a 2005 2500 HD with the Duramax and Allison set up.
January 6, 2010.

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