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Re: CEL on '93 GMC 1500/5000?
Posted to HD/Fleet Forum on 3/1/2011

We got it figured out, with some help from another dealer. What we found out is there's a Green fuse holder on the lower left inside panel (near the brake pedal), you pull the fuse apart and it will flash out codes. We did this and it flashed no codes, traced ... Login to read more.