'94 Tahoe 4WD problem !

I have a 1994 K-1500 Tahoe with Floor shifting 4WD. For some reason or another, I cannot engage the 4WD. I can pull the handle into 4WD, but it does not feel like I am getting the power up into the front Diff. Also, the indicator light that shows me that I am in 4WD is not coming on and I have already checked the bulb. Any Ideas, it is really plaguing me.
The engine is 6,5TD V8 if it helps.

Thanks in advance !

Sounds like your front wheel drive actuator is not working anymore.

You need to buy it from GM give them part number 26013495

Thanks again !!!

You have two options for this.
#1 is to replace the actuator listed above, it's a heated gas design & engages slowly. The easist.

#2 is to replace it with the updated mechanicle actuator & required wiring harness. Not as easy &
costs about the same.

I have the same truck and the same problem. But I keep burning the 4wd fuse and smells when I try to engage. I assume the smell is the burning fuse. Once, it sounded like the auto hub was hanging up I con't to drive a few feet and it made a banging sound and then never again. Do these hubs get hung up or need cleaning? Would that cause a fuse to blow?

Thank you in advance.

Nick

I bought an actuator on ebay..Does anyone know how to test the spline for damage before installing this actuator..I read about putting a dowl in the actuator hole ???

I bought an actuator on ebay..Does anyone know how to test the spline for damage before installing this actuator..I read about putting a dowl in the actuator hole ???

I couldn't get my new actuator to engage my 4wd so I did stick a dowel in the actuator hole and when I did the light for the 4wd came on (with they key turned in the on position) So the actuator wasn't pushing far enough to lock the hub.