Heavy duty water pump, dual thermostat, duramax fan upgrade, your 6.5 will never run hot again. Before in the summer time, coming up Lookout Mt., 230 degrees with no load being hauled, just the truck by it self. After upgrade, I come across Monteagle Mt.... ...read more From: Timothy H.
Thanks a million Walt for all your help and products!!! This Yukon is running much cooler, smoother than ever, and has power that I have not seen in this truck before!!. It tows the boat like if it wasn't even there. I have not measured it, but fuel... ...read more From: Billy S.