Question about 2000 GMC New Sierra 1500

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4 wheel drive does not engage

2000 gmc half ton, 5.3, push button 4 wheel drive. you can hear things going on when you push the button to 4 wheel drive but the front hubs arent locking in. replaced the actuator on the front diff. still nothing. any ideas. the dash switch is new. and no messages on the dash board display. could there be a sensor or relay i need to know about. worked great last winter, now... nothing thanks for all the help!! dixon

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  • dallasmurray Jan 27, 2009

    i have an 01 gmc 2500 hd, the 4 wd does not engage. it is a push button 4wd an i can hear the actuator moving but the hubs are not locking.

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Run a direct hot wire to axle concetion might get lost when moved if nothing take out your lockouts & re build or replace

Posted on Dec 17, 2008

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