4WD

Tiny
BSADIELEE
  • MEMBER
  • 2000 GMC SIERRA
  • V8
  • 4WD
  • AUTOMATIC
  • 102,500 MILES
I HAVE A 2000 GMC SEIARA. MY SERVICE 4WD LITE CAME ON. WHAT ARE THE POSSIBILITES
Sunday, December 26th, 2010 AT 7:06 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,269 POSTS
If it is on, chances are the 4wd isn't working. It could be a relay, fuse, or the actuator itself is going bad. If it isn't working, check for power to the actuator first. If there is power, chances are the actuator is the problem. If there isn't power, you need to trace wires back to the relay, switch.
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Wednesday, January 12th, 2011 AT 9:13 PM

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