Transfer Case Identification - Chevrolet Forum - Chevy Enthusiasts Forums

Transfer Case Identification

Old  May 8th, 2011, 5:03 PM
Transfer Case Identification

I just recently bought a 2001 Chevy Silverado 2500 4X4 6.0L but it is not the HD. I am wondering what it has for a transmission and transfer case. The guy I bought it from replaced the transfer case and it is not the right one. My truck comes with auto 4/wd and this transfer case is for a 3 pushbutton without auto...I only have 4 hi and 4 lo and will not go into 2 hi. I want to see if I can find another used transfer case but I cannot find anything on the internet that will tell me what originally came in it. The closest speculation I can see is a 32 spline NP 263 HD. but the mechanic that owned it originally said it must have been an NP 246 I am a little confused. I understand the 6.0 must have come with the 4L80E transmission for the amount of torque the 6.0 puts out...but what is the correct transfer case that I'm supposed to have?

Old  May 8th, 2011, 6:18 PM
I found out that the original transfer case is an NP 246 HD and the replacent I have is an NP 263 HD. I have 4 push buttons on the 4wd, 2HI 4HI and 4LO. Right now, auto, 2HI and 4HI are all 4 LO....and 4LO is 4 HI...I have no 2HI at all. so now my question is, do I keep this transfer case and rewire it because it is a heavier duty transfer case, or do I just go get the original case and swap it back?

Search this Thread