In this video, I am showing you a 2015 Mack! This truck was towed in with a coolant leak! I got that fixed. Fired it up, and all the day lights came on. Check engine lights! Dash says needs parked regeneration! Tried to start a parked regeneration, and the truck wouldn't complete one. The truck has a very bad exhaust leak. Watch video to see why!

Thanks for Watching!!!