Question about 1999 GMC Sierra

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1999 GMC Sierra will not come out of 4 wheel drive low.

We have tried taking the fuse out and it still stays in low.

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  • richeyboy Feb 04, 2009

    I have a 2000 sierra 1500, won't come out of 4 hi, hit the button ( sometimes I have to push hard on the button's to get it to shift) 2hi will flash an you can here the motor running, then go's back to 4hi. sometimes it goes to 2hi with no indicater light, then five miles down the road, it will be back in 4hi. Tried different set of button's, no change. going to pull the motor off transfer case tomarro...

  • richeyboy May 11, 2010

    Is that the tccm under the dash, I was told by a mechanic there's something under the dash you can clean

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My guess is that the actuator is either not getting power or it is no longer working that is where i would start

Posted on Feb 04, 2009

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