2007 GMC 2500HD HEATER CORE PROBLEMS!! help
My trucks is a 2007 GMC 2500HD with the 6.0 gas job in it. Truck only has 76,000 miles and I have had it a little over a year. I bought the truck because of how pristine and perfect it was kept. Clean...
Forum Discussion
jbres wrote:
Thanks for the replies..
LS1MIKE- I agreed to switch over to Valvoline Max Life, because I did some research on it, and it seems lots and lots of people switch from the Dex cool (aka dex death), to the universal yellow stuff.
After the flush, all was well for 1 year and 10,000k miles. Was this a fluke, or should I directly blame it to switching away from the DEX COOL?
Hard to say, depends on how long the original stuff had been mixed with the incorrect coolant.
Also depends on how good the flush was. They need to get it ALL out. At this point don't switch back. Fix the heater core, do a COMPLETE flush and put the universal stuff back in.
So much miss information on DEX out there. With the LS series of engines. 4.8, 5.3, 6.0, 6.2 etc. Leave the Dex in there. It does not cause any problems.
