Hey guys. New to the forum and new to diesel trucks. I have recently purchased an '05 GMC duramax quad cab, short bed, 64k mikes. The previous owner had preformed several mods to the truck. One is the Banks monster exhaust behind the cat and second, the E-Z flow air intake. The truck gets 20-21 mpg at 65 mph which really surprised me. The real surprise was went I towed my low profile 4000lb boat and got 9.5 MPG at 65 mph on flat level ground. Also need to mention here, the coolant fluid resevoir emptied itself on this trip and on the return trip. Long story short, the truck had blown head gaskets. It was repaired under warranty however, the tech showed and told me the previous owner had a programmer of some kind on this truck and had abused it. My truck is now fixed and is running great with one execption, it still gets 9.5 mpg while towing my boat. I have a couple of friends with an '03 and 04 duramax(stock) that are getting 16-18 mpg while pulling an 8k lb camper. What gives here?? Any ideas?? The tech said a programmer might give better fuel preformance, but not to bring it back with warranty issues with the programmer installed. He suggested a hand held programmer.
My questions:
What are your suggestions of the MPG while towing??
What are your suggestions on a handheld programmer.
Thanks for reading this rather lengthly post and for your comments.
n4haj
My questions:
What are your suggestions of the MPG while towing??
What are your suggestions on a handheld programmer.
Thanks for reading this rather lengthly post and for your comments.
n4haj
