[Texas Red DMAX]

How often do you guys check the fluid level in the transfer case?? A mechanic buddy of mine goes to auction close by and buys cars to resale. A couple of weeks ago he bought a GMC cc/sb gasser ( don't know what year exactly , guessing 02-07 ) and there was a strange noise coming from the front end when he tried out the 4x4. He narrowed it own to the t-case. Didn't see any signs of leaks so he cracked it open. IT WAS BONE DRY. He runs a garage and since then makes a point of checking all t-cases on vehicles getting the oil changed. My wifes 99 Tahoe is a 4x4 and has never leaked fluid from the t-case , it was 1.3 quarts low ??? WTF happened to the fluid ??

 

[04duramax2500lb7]

atf can basically evaporate under high heat conditions. some people run 5w-30syn cause if wont disappear but i would just check it a couple times a year

 

[scottdomine]

I bet ya $1000 you have a case of pump rub. Happens quite often on these trucks w/ the trans case. do a search and you'll find lots of info

 

[Hondarider552]

engine oil in mine since 20k. check it ever oil change and im at 55k now and havent lost any. I run 3qts.