2013 GMC Denali 2500 6.6 Durmax - $30,000 (Harker Heights)

2013 GMC Denali 2500, 6.6L Duramax. With Allison Transmission. Not deleted. No MIL. No DEF issues. There is a minor air intake leak at one of the gaskets after the EGR By-pass valve was replaced a couple years ago. Just haven’t found the time to repair. I replaced the by-pass valve while we were in Italy and unfortunately I didn’t receive all the new gaskets and I had to reinstall a couple old gaskets. No engine power lost is the reason I have fixed the whistle sound from time to time.