gmm43

that's right lol, otherwise they'd need to figure out a way to keep the tranny warm over night in places like Canada I'm definitely going to order Katech 174, the v6 option doesn't show up on their menu for this truck but the housing is the same for both v8s and v6s.. the part is also on backorder . I will post updates on here

could you say that in layman's terms? I just installed the SureCool today after work. truck was still warm by the time I finished, trans fluid temp read 187. I ran a test drive to the car wash going the scenic route. 10 min on the free way and plenty of stop and go city driving, letting her eat a couple of times. Good news? It never hit 200...only went up to 199 and settled down to 194. I'll keep an eye on it in during the morning commute to see what happens when starts from ambient temp.

very cool data! I guess for now my next step is an after market thermostat, after the Sure Cool mod. you would think that they would have the same tranny cooler on V6s as like the V8s since the V6s also come with towing package

Thanks for the diagram and explanation! will definitely install the Sure Cool

Wow really? honestly I chose the GM update only because of how easy it would be to just switch out the original one. But Im definitely going to install the STL010 kit I've got coming tomorrow. It basically keeps the the valves open to have the fluid go through the cooler all the time witch in turn is basically functioning as a delete. all I need is a pair of snap ring pliers .. Thanks

No code thrown

Just recently bought a 2018 Sierra 1500 4.3V6 with the 6L80, 91xxx miles. A week or so later I ordered my AFM disabler and the GM updated TBV. Normally my trans temps would be 190-210 city driving, 170-185 highway.. took a while for it to be delivered through snail mail but when it finally got here I went ahead and swapped it out. I noticed that the trans fluid would reach 180s about after 20 min or so of highway driving( its been high 80's here these past few days). It definitely takes longer for the fluid to reach these temps but I was expecting way cooler levels. After driving on highway for half an hour(185 F), I drove around town and parked at grocery store and watched the temp rise to around 193 F at idle, shopped for a few minutes and when I started the truck again it was down to 185 F and pretty much remained that temp for the 10 minute drive home stop and go traffic. only one previous owner and had excellent service history on carfax, regular oil changes and one Transmission fluid change at 45k miles. I'm waiting on my filter. gasket and fluid to be delivered some time next two weeks to change out the fluid myself. Transmission runs fine to me . any ideas why my trans temp is so high?? anyone else have a similar experience with the GM TBV update? I should also mention the i went ahead and ordered the STL010 from Shift Tech, hopefully that continuous flow will give lower temps