Table 1 shows one common unknown or other related problems of the 2004 GMC Sierra 1500.
| Problem Category | Number of Problems |
|---|---|
| Unknown Or Other problems |
In my 2004 GMC sierra the wiring harness for the a/c down near the passenger floorboard smokes and I smell burning plastic and my a/c doesn't work and I talked to a few other GMC and chevy owners and they have the same problem. So if alot of people are having the same problem I think its something to look into. . .