[1988 gl-10 awd will not turn rear wheels]

i take it your car has the 4spd automatic full time 4wd. are the rear wheels locking up or just not engaging? there is a fuse under the hood that when installed it disengages the 4wd, runs in Fwd. make sure there in no fuse there, and there is no bad wires. the fuse should be by along the firewall

 

the rear wheels are electrically activated by haydraulic fluid against a clutch pack. also there is an ecm that controlls the 4spd auto.

 

just to give you details so you know where to direct your questions. i would assume the car is turbo and also has air suspension, am i correct?

Yes you are right. I should have added more datails, so here we go. The rear wheels do not engage, there is no fuse installed and when I put one in the dashborad light comes on indicating FWD. I inspected the wiring in the dash and engine area and didn't see a problem. Can I have a hint on my next move? By the way thanks for the input.

[1988 gl-10 awd will not turn rear wheels]

Can anyone give me a quick run down on how the awd engages the rear wheels when the front wheels slip. I need help hints in trouble shooting this problem. What are the parts to this system and there locations on the car?

Thankyou for the help

cstrohschein