So I tackled this todAy going to make a small Thread on tapatalk to help anyone who may want to do it themselves.
What you need.
5 bottles of gear oil
8 bottles of tranny fluid.
There are the part numbers and cost for my 2008 Denali.
First front diff
Pull top plug first. 18mm. Then drain 13 mm.
Let drain replace plug and fill. I filled it untill it leaked out of the full port. This uses gear oil. It stinks. Mine took 1.75 bottles till it leaked. At 20+ dollars a bottle try not to drop it.
By far the full is the hardest part of this whole job. I created a hose to bottle contraption to fill it. Find a better way to do it. My hands are still hurting from squeezing the bottle.
Transmission.
Many have noted they got the pan off by prying the exhaust down. Well mine wouldn't give enough without taking loose the drivers side of the exhaust. I almost broke a selonoid doing this luckily I just broke off a plastic piece and bent a electrical tab.
Loosen all the bolts. The pan will likely stay in place. Take a pry bar and just one end a little so as to start the liquid flowing. There is 6 quarts in there so be easy.
After hearing a crunching noise after trying to do it without dropping the exhaust. I finally dropped the exhaust first. Here is where a helper comes in. Pry down the exhaust and somebody else slide out the pan slowly trying not to spill the fluid.
Let drain, I left mine for a hour and at that point no more fluid was coming out. Dab clean internals and pull out filter and seal. It comes out pretty simple not science here. Clean pan well and place in new filter. The new gasket will have 2 pilot holes on each end to line it up. It only goes one way so don't mess that up. Replace pan tighten to 6lbs of torque which is simple hand tight. I did my Tighten in a x pattern then clockwise.
Transfer case.
The easiest of all. Pull fill plug and drain plug and refill took 10 minutes. It will use 1.5 quarts of the tranny fluid.
Rear end. First remove drain plug then pull cover just enough for the fluid to run from the bottom of the cover. Let drain and pull cover.
You have to clean all the old gasket off. It's a paper gasket so it's going to be on there good. Cover the internals when scrapping off the gasket so it dosent going flying inside. I use a fine grinder disk to clean up the cover and used a razor scrapper to do the housing. I then cleaned with three cans of brake cleaner and dried out with air before refilling also wiped clean.
I ordered a gasket with my vin and still got the wrong one so if your ordering one for yours it's a 10 bolt. I ended up having to use a cheap paper gasket because the dealer was already closed and it was all I could get.
My rear too roughly 2.5 bottles of fluid and I used the same contraption as the front but with a shorter hose.
The dealer will give you some of the spouts that screw on the bottle that I connected the hose to for free.
All and all no harder than changing your own oil. A lift makes all the difference but definitely not worth giving a grand in labor to the dealer.
What you need.
5 bottles of gear oil
8 bottles of tranny fluid.
There are the part numbers and cost for my 2008 Denali.
First front diff
Pull top plug first. 18mm. Then drain 13 mm.
Let drain replace plug and fill. I filled it untill it leaked out of the full port. This uses gear oil. It stinks. Mine took 1.75 bottles till it leaked. At 20+ dollars a bottle try not to drop it.
By far the full is the hardest part of this whole job. I created a hose to bottle contraption to fill it. Find a better way to do it. My hands are still hurting from squeezing the bottle.
Transmission.
Many have noted they got the pan off by prying the exhaust down. Well mine wouldn't give enough without taking loose the drivers side of the exhaust. I almost broke a selonoid doing this luckily I just broke off a plastic piece and bent a electrical tab.
Loosen all the bolts. The pan will likely stay in place. Take a pry bar and just one end a little so as to start the liquid flowing. There is 6 quarts in there so be easy.
After hearing a crunching noise after trying to do it without dropping the exhaust. I finally dropped the exhaust first. Here is where a helper comes in. Pry down the exhaust and somebody else slide out the pan slowly trying not to spill the fluid.
Let drain, I left mine for a hour and at that point no more fluid was coming out. Dab clean internals and pull out filter and seal. It comes out pretty simple not science here. Clean pan well and place in new filter. The new gasket will have 2 pilot holes on each end to line it up. It only goes one way so don't mess that up. Replace pan tighten to 6lbs of torque which is simple hand tight. I did my Tighten in a x pattern then clockwise.
Transfer case.
The easiest of all. Pull fill plug and drain plug and refill took 10 minutes. It will use 1.5 quarts of the tranny fluid.
Rear end. First remove drain plug then pull cover just enough for the fluid to run from the bottom of the cover. Let drain and pull cover.
You have to clean all the old gasket off. It's a paper gasket so it's going to be on there good. Cover the internals when scrapping off the gasket so it dosent going flying inside. I use a fine grinder disk to clean up the cover and used a razor scrapper to do the housing. I then cleaned with three cans of brake cleaner and dried out with air before refilling also wiped clean.
I ordered a gasket with my vin and still got the wrong one so if your ordering one for yours it's a 10 bolt. I ended up having to use a cheap paper gasket because the dealer was already closed and it was all I could get.
My rear too roughly 2.5 bottles of fluid and I used the same contraption as the front but with a shorter hose.
The dealer will give you some of the spouts that screw on the bottle that I connected the hose to for free.
All and all no harder than changing your own oil. A lift makes all the difference but definitely not worth giving a grand in labor to the dealer.
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