[Gamehunter2277]

I have a 99 Gmc 1500 z71 and the transfer case blew up and has auto 4x4 rear locker isn't always locking both wheels I need the number for the transfer case like np241 for example thank you

 

[Nicholas]

look at the t-case tag.

 

[black4x4]

the one in my garage says np246gm and thats out of a autotrac 99 1/2ton

 

[Gamehunter2277]

ok thank you