upgrade transmission cooler
question on upgrading trans cooler. my 2009 gmc 1/2 5.3 has tow package and have made a few 2500 mile trips. tranny temp does go up. if i want to change or add another, who can tell me the be...
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224 is fine. Slow a bit and downshift above 240 and maybe pull over if you are pushing 260.
Fluid has changed since Dexron II of the '70s.
Fluid has changed since Dexron II of the '70s.
