My 2000 GMC Yukon xl 2500 4x4 trans gets hot.
My 2000 GMC Yukon xl 2500 4x4 trans gets hot. When I drive uphill, no towing, no load, the trans runs
about 210. Downhill, no problem! I was thinking the stock cooler is plugged(?). Someone told me the TC
was going bad but I have no shift problems. I am going to put on the biggest trans cooler that will fit
but I think that might just mask what the real problem is. Any tests I can do? I need to get this fixed!