I guess I should have said The 4x4 was working...It went out 2 months ago. As I said The lights say its working but they are not ( FOR SURE NOT WORKING )
Any incite on this?
The solenoid on the front axle is a servo. It slides a clutch to allow the front differential to drive the front axles. If this is not working, the hubs will not be driven. These used to be terrible about reliability, (IMO) as they get all kinds of road splash and mud cake if used off road.
If you have indicator lamps on the dash or console telling you the 4X4 is engaged, the transfer case is working, (apparently) but the front differential is not engaged. This solenoid/servo will be bolted to the front axle housing about centerline of the truck on the top. Make certain you have voltage to the plug before you replace parts. If you have voltage reaching the unit, ensure it's mounting brackets are supplying a ground for the case. Not all of them used the chassis as ground so electrically ensure you have a ground also. If you have voltage, and a good ground, remove the unit from the axle and try to slide the fork by hand this unit engages with. It should move very easily. If it doesn't either something is binding, or bent inside the axle housing or differential case. If the apparatus slides easily, you have voltage, you have a good ground, then replace the solenoid/servo unit with new.
Not all of these were plastic; some had a metal body dependent on year. If the case is impact damaged, swollen, or smells any kind of burnt, change it.
I can't remember is this unit was fuse protected or not as I've not worked on one in quite some time. If you don't have voltage, look for either some type of electrical protection blown, (fuse, circuit breaker) or the enable switch itself. The rotary and slide action switches using in vehicles are troublesome as they age.