i have a 1996 z71 with a p1870 error code and it says "transmission mechanical transfer case switch circuit short to battery" i am not sure what to do i did notice that the fuse box inside the cab doesnt have a fuse in the transfer case spot but i never had one and the light came on this morning.

Code P1870 (transmission components slipping )
Best have it checked at your local transmission shop
Indy Tech.
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http://www.flatratetech.com
staff tech

Indy Shop owner