1999 Chevy Tahoe 4wd problems

[oknik123]

Well, I'm not sure what's going on but when I try to switch my truck into 4wd, 4 lo, or all wheel, nothing happens. It's all push button but when I press the button for either of 4 hi or 4 lo or all wheel, the light on the button just blinks at me. It doesn't blink when it is in 2 hi but it does for the other 3 options.... I don't get it. When I do press it you can hear something engage but the front wheels don't turn... anyone have any ideas?

 

[Devious_Tahoe96]

I have the same problem but only with my 4low. Its most likey the acuator that engages the 4wd. Since the 2wd w/ g80 locker isn't part of the transfer case it shouldn't blink unless you got a problem with that too then you might have to get under there and check it the rear diff.




Disregaurd my comment on the G80 locker. lol

---------- Post added at 02:17 PM ---------- Previous post was at 01:55 PM ----------

This thread should have all the answers to your 4x4 problem.

http://www.tahoeyukonforum.com/forum/showthread.php?t=17964&highlight=4x4+engage

 

[oknik123]

So I just got done taking off the actuator. I had my wife press the 4 lo and 4 hi button while I had it in my hands and hooked up to the wires and there was nothing. I didn't hear anything or see anything move with the actuator...... do you still think that is the problem? The actuator in the front diff?

 

[Devious_Tahoe96]

Its supposed to pop out when its engaged so its the actuator for sure.

 

[blueflamed03]

replace that accuator, should fix it

 

[oknik123]

Do I need to take my truck to a dealer to have my computer reprogrammed after I install it? cause I called them and they said that I need to do it. I also heard that I don't need to do that...... I just want this to be quick and easy.

 

[bsamoul]

Do I need to take my truck to a dealer to have my computer reprogrammed after I install it? cause I called them and they said that I need to do it. I also heard that I don't need to do that...... I just want this to be quick and easy.

No, you don't need to reprogram it.

 

[Devious_Tahoe96]

Dealership just wants to take your $$$$. Just replace and your good to go.

 

[oknik123]

Thank you guys.