Hey, I'm a newbie to posting on here although I've used and followed threads for a while but with all the searching and knowledge I have been able to learn, I'm still comin up short on this thing...SO a couple weeks ago I was just driving home from some soccer fields and stopped to fill up. Shut the truck off and filled er up, started it up and I saw "service 4x4" displayed on my dash and I put the truck into drive just with my foot on the brake and it clunked pretty good so I realized it went into limp mode, I've delt with that before a few times just from pushing the trans too much doing some pulls so I went to shut it off cleared the U2106 code with my bullydog tuner and started it back up and had the same issue. I repeated again but this time the truck wouldn't crank. I had full ignition power but it wouldn't even try. It was late and I just wanted to get home so instead of messing with it much I just went straight to the starter with my screw driver and jumped it that way and limped it home where its been sitting. Since then I have tested all the fuses and relays, I tried a returnable TCM from eBay lol, I checked for power and ground at the tcm. I have checked for power at the NSBU switch and ground, I checked the stupid little IGN 0 fuse on the driver side cab fuse box, wasn't that lucky, and I checked as much of the wire loom from the TCM as I could get to, I'm just coming up short.
Would really appreciate any help on where to turn to next and how to test to make sure my NSBU switch is actually good but I'm not sure if that's also related to the service 4x4 light...Any ideas?
Would really appreciate any help on where to turn to next and how to test to make sure my NSBU switch is actually good but I'm not sure if that's also related to the service 4x4 light...Any ideas?
