2014 sierra tru cool
#2
#4
#5
TECH Enthusiast
you don't need this cooler, all you need to do is remove the thermal bypass valve plug the hole and your good. My trans doesn't run any hotter than 160 running the crap out of my truck with a converter.
RT
RT
#6
TECH Apprentice
#7
TECH Enthusiast
thermal bypass removal
I did this at my Fathers house with a Brace and Bit and a chainsaw so no giggling! as you can see the t stat and the spring is removed and i tossed them in bag, did some measuring and came up with a stainless button head screw and that is the seat end and filed the end of the screw to get the correct length. The bypass uses the spring to keep the t stat off of the seat and when temp rises the t stat brass end makes contact with the seat inside of the aluminium block mounted on the transmission and lets fluid run through the cooler. Basically my valve stays seated and lets fluid pass through the cooler all of the time. BTW you really don't need to turn the treads off of the screw at all just file to length. Questions just ask
RT
RT
Last edited by 07Softail; 11-07-2016 at 06:08 PM.