2001 Gmc Safari Awd Light On New Actuator Motor Will Engage Worked

2001 GMC SAFARI
180,000 MILES
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AWD light is on. New actuator motor. AWD will not engage and has worked intermittently, disengaging at its own will, how does a person isolate which component is failing.
Jan 28, 2013 at 12:02 AM
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BMRFIXIT
  • ✓ASE Certified Mechanic
  • 19,053 POSTS
  • ASE Certified Mechanic
have to start by scanning the system and getting codes
an OBDII reader will not help you need a scanner
Jan 28, 2013 at 12:32 AM
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