Question about GMC Sonoma

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I just got a new switch for my 4 wheel drive and it will light up for a second and switch to 4 wheel then go right back to 2 wheel

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  • wyniguez Dec 12, 2008

    no. it actually isn't even lighting up anymore. that just happened the first time i installed the new piece

  • wyniguez Dec 14, 2008

    i did the first time i tried to put in 4 - wheel but can't hear now

  • wyniguez Dec 16, 2008

    Thank you very much. I'll have to try that

  • mikehumble May 11, 2010

    Can you hear the transfer case motor shift?

  • mikehumble May 11, 2010

    Will it shift into 4lo?

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  • 124 Answers

First check your fuses there is a ATC fuse and 4wd fuse. If they are both good try resetting the 4wd computer. To reset pull out both the ATC and courtesy lamp fuses for at least one minute then reinstall both fuses then cycle the key on and off 5 times. 1 cycle = key on and off.

Posted on Dec 15, 2008

  • 2 more comments 
  • DONALD
    DONALD Sep 23, 2014

    SIR WHAT IS A ATC FUSE I FOUND THE 4 WHEEL DRIVE

  • DONALD
    DONALD Sep 23, 2014

    SIR COULD ANYONE ADVISE ME WHAT ATC FUSE IS THANK YOU

  • DONALD
    DONALD Sep 23, 2014

    SIR I HAVE A 2001 BLAZER COULD YOU ADVISE ME THE LOCATION OFF THE ATC FUSE ON HAT VEHICLE THANK YOU

  • mikehumble Sep 23, 2014

    The ATC fuse is automatic transfer case. Your truck has a fuse box under the hood and one on the side of the dash. The atc fuse is in one and the courtesy lamp fuse should be in the other. I dont remember which is which.

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4 Suggested Answers

mrgreenz
  • 962 Answers

SOURCE: 1999 ford explorer pulls to right when put into 4 wheel drive

they have what are called Radius Arm Bushings.That cause this problem and other vibration problems also. Go to Explorer forum com site for info on how to replace the.

Posted on Feb 02, 2009

  • 2 Answers

SOURCE: when you push the 4

a lot of 4wd you have to back up for a few feet to disengage the hubs after you tourn them back to 2wd

Posted on Dec 13, 2008

AaronTech
  • 115 Answers

SOURCE: lights on push button 4 wheel drive out

more than likely there is a code set for the 4 wheel drive system and its stuck in a "limp in" mode. you're going to need to get your hands on a code reader or take it in to the dealer for a diagnosis.

Posted on Jun 25, 2009

  • 400 Answers

SOURCE: the

The blinking is telling you there is a problem in the system. There isn't much to the system, so if you can get the codes out of if then report back and we can lead you in the right direction.
We'll need the code, Otherwise you'll just be throughing expecive parts at your truck.

Posted on Oct 18, 2009

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