2000 blazer 4x4 4.3 the transmission and transfer case need to be replaced. Instead of paying the 2 grand or more i figured i would give it a shot and try and put a used set in. I have a "4 switch" case. I cant find one right now but can find a 3 switch. My question is... Will a 3 button fit and connect to everyting correctly? and if so will i just loose the "auto" option? any help would be appreciated thank you.

2000 blazer 4x4 4.3 the transmission and transfer case need to be replaced. Instead of paying the 2 grand or more i figured i would give it a shot and try and put a used set in. I have a "4 switch" case. I cant find one right now but can find a 3 switch. My question is... Will a 3 button fit and connect to everyting correctly? and if so will i just loose the "auto" option? any help would be appreciated thank you.

No you need to stay with what you got.

Alright Thank you. Any quick way to tell by looking at the case if it is 3 or 4 switch? i have my hands on one but they dont know what it came out of. and is the tranny and transfer case in a 2000 the same as a 97? or r these questions i should be asking a dealer for numbersto match up?
Thanks again

Should have a little round tag on it on the backside.

It is 1999 and up call a junkyard up for an interchange.the 1999 and up transfercases use Autotrac II fluid.