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International Automotive Technicians Network
Re: 2008 GM 6.6 P0101
Posted to Technical Discussion Forum on 10/7/2024

The EGR is the most common as others have pointed out. Make sure the MAF sensor is an OE, aftermarket are terribly inaccurate. I had a used car lot bring me one a few years ago and they kept installing aftermarket MAF sensors, I found the EGR valve all coked u... Login to read more.