Corvette Servo on Denali?

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PNWMuseumman

PNWMuseumman

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Just got a quote to do this from a shop I've worked with before for $361.00 out the door...

That seems awfully high. I may just have to take a stab at this myself!
 

HiHoeSilver

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Just got a quote to do this from a shop I've worked with before for $361.00 out the door...

That seems awfully high. I may just have to take a stab at this myself!

I did mine in my driveway when it was empty while I did the fluid and filter change. Added an hour(ish) and a little shoulder pain to the job was all.

1. Be careful not to pinch the o rings.
2. Be ready to call that snap ring a few names (parental advisory).
 

latvius

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You aren't kidding! That is a phenomenal write up on how to do it!

Thank you!
Good write up but note a few things, he is doing it on a pickup not a SUV. Not sure on the Denali but on my Tahoe the pin won't come out it hits the floor board. If it was about 3/8 shorter would be fine. So I had to bend the heat shield and pound the floor board with a hammer and punch to get the clearance to get it out. That was easy and fun lying on my back with no room and limited visibility.
2nd most important thing that he does not emphasize enough the last step. Getting the metal ring in properly on the servo cover. You know what happens if you don't? The cover blows off cracking the case of the transmission and you get to go buy a new transmission + core charge. Keep in mind you cannot see the entire ring seated only a portion of it. You need a mirror or something to ensure it is seated.
 

jmm121783

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So this is works fine on all trucks including AWD, 2WD and Selectable? Does this extend the life of the transmission even if you don't tow? I feel like the transmission and its controller or whatever is controlling the downshifts and when the tranny chooses to shift is the culprit for all the weird shifts I see daily when driving the truck. It just feels like the tranny doesn't downshift when it is supposed to and then when it does downshift it goes too far down, blah blah....I just feel like the stock GM program for the tranny is JUNK.
 

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