V6 four wheel drive automatic 105,000 miles.
Hello, My truck has an automatic transmission with a turn knob switch for engaging the four wheel drive. When I switch from two wheel drive to four wheel drive high or four wheel drive lo the lights on the dash come on but front wheels never engage. I have checked all the fuses, and removed the electronic shift motor from the transfer case the motor appeared to work fine. Since the switch activated the shift motor I would guess that it is not the GEM, fuses or relays. Since this system is a "Vacuum Pulse" system is there a vacuum line somewhere that could be faulty or a o-ring that is faulty, I do not fully understand how this system works I see a lot of posts for this problem but no answers other than what I have checked. Any help is appreciated. Thanks
have the same problem?
Tuesday, December 4th, 2007 AT 2:54 PM