My "Check Engine" light was on & I had Computer Tune & Lube check it out. It turned out to be the 2ndry air filter / emissions effected. This was fixed to GMC specs. Light came on again. Computer Tune & Lube found a valve that is not listed (showed me the specs)-fixed that. Transmission went - they fixed that.(Runs great so far - used / 90 day warranty) Light came on again - needed a new gas cap ($50 charge) Light is on again and I will take it back, as according to Advanced Auto's computer -it is again the 2ndry air filter. I will let you know the results. Most of the repairs were when "Josh" was manager - Middletown. New manager now, so will see how things go. Josh bent over backwards to get my car right & has credited me with a free oil change! So far I'm satisfied.
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