I did a search and couldnt find anymore info than what I already had. This is the second time the 4wd has decided to quit on me. First time was a fuse. But now when turning the ESOF switch the transfer case does not engage. I put a scanner on the truck and came up with the code P1876: Transfer case 2wd solenoid circuit open or short to ground. After looking at the wiring diagram, I can't find the 2wd solenoid. Only mention of it is on the GEM module and thats one wire coming into the module that is labeled 4X2 SOL , that wire comes from the Vacuum solenoid. Does anyone have idea on how to fix this code, or where to look to figure it out. I tried clearing the codes but it comes back on instantly when it restarts. Any help would be appreciated!!! THANKS! Josh

 

No ideas???

 

Goes into the shop on thursday. Will post to let everyone know how I make out for anyone who may have a similiar problem.