2001 gmc sierra 2500HD 6.6 duramax and Allison transmission 356000kms never had aftermarket exhaust or tuning. The truck is fully loaded other than sunroof. It has 0 blow by and doesn’t burn any oil. Recent oil change and rear differential service.

I have recently replaced:
•8 brand new reman Bosch injectors
•valve cover gaskets and all injector seals
•all the low pressure fuel lines under the hood
•water in fuel sensor
•fuel filter
•seat cover replacement leather top and bottom
• rocker covers installed and rust inhibited
• full tailgate hardware kit
•coolant temp sensor and wiring
•belt tensioner
•new tires all around
•new headlights
•both batteries replaced

The truck has raptor liner from the body line down, around the fender flares, the tailgate, box rails, and a portion on the hood

Cons:
•the front output shaft seal/bearing on the transfer case has play and will need to be replaced, it’s noisy but the 4x4 still functions.Show less