service 4wd light

[Duckdestroyer]

Hello everyone
My service 4wd light came on in my 99 yukon a couple months ago out of nowhere. Haven't used my 4wd Since last winter, I changed the switch in the dash cause the lights went out a year or two ago thinking that was the problem. I can hear something making noise when I shift form 2 to 4wd but it doesn't shift and when I put it in 4lo it just blinks and goes back to the last selected range. Can anyone steer me in the right direction.

 

[Goodinblack]

Front axle actuator?

I replaced one on my 1996. It was a slightly different setup though. I had a floor lever.

 

[Duckdestroyer]

I think that's my next step but I read if you pull the fuse for the tccm and that will rest the tccm but there's a transfer case and a 4wd fuse. I don't know witch one to pull, and does the truck have to be running?

 

[autolover3]

http://www.tahoeyukonforum.com/forum/showthread.php?t=57552

Give you a little direction. My guess would be front end actuator.

 

[Duckdestroyer]

Figured it out its my transfer case actuator

 

[Nosferatu49534]

Wish that was my prob in my '99 figured out all the clutches are burned out.

 

[Nosferatu49534]

I guess I posted too quick. We pulled the t-case and all the clutches were good. It ended up being the encoder motor.