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Adventure Package T Case/Rear Locker

USMC_TOP

Well-Known Member
Messages
491
Location
Muir Michigan
I crawled back under the 06 today to change the T Case fluid. I will not say what fluid I used because I read the thread all about it and don't want anything to do with that one. I have a sticker on my T Case that says fill to top and then add 250ml in through the speedo sensor hole. Anyway I drained the T Case and wow! I never seen transfer case fluid this nasty! It was like brown water! Guess I'll be keeping an eye on this for now on. For those of you that have a 06 or have to fill through the speedo hole I have a easy tool for removing the speedo sensor. 3/4 combo wrench fits perfect. I do have a question about this locker in my 06 Adventure, is this thing a real locker compared to my days of old Detroit Lockers I had in my old GM 1 ton? Or will these things slip if enough force is put on them?
 

SuperBuickGuy

Well-Known Member
Messages
3,403
Location
Woodinville, WA
you have a button on your dash that electrically locks your rear differential - effectively it works like a spool. Of course, it only works in 4 lo and under 30 mph. Don't try to hammer it when rocking out of a hole or you'll break it.
 

USMC_TOP

Well-Known Member
Messages
491
Location
Muir Michigan
Thank you! I was just wondering because I put it in 4 lo and locked the diff and proceeded to climb a embankment until I got a little tire spin and I don't think it was locked in. Truck was like almost standing on it's rear end. Very steep (I should of took a picture) after I backed down I did not see 2 tire marks at the rear, just one. I think I might pull the inspection cover and take a look; I'm betting the gear lube looks like my T case fluid did an needs a change anyway.............:)
 

HummerRoller

Well-Known Member
Messages
149
Location
Schuylkill County, PA
Yeah mine with 88k was nasty... I had to replace my shift fork so I HAD to repl a cr the front diff fluid... might as well do it all!

Sent from inside the cardboard box in the alley behind your house.
 
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