Why won't my 4WD engage

Tiny
MIKE1943
  • 2000 CHEVROLET SILVERADO
  • 138,000 MILES

My 4wd won't engage. The actuator has been changed. Diagnostics said there was a vacuum problem.

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Wednesday, August 8th, 2012 AT 6:07 PM

1 Reply

Tiny
ASEMASTER6371
  • EXPERT
  • 25,554 POSTS

There are updates for the actuator. Did you get the newest update as they had many issues with those old vacuum units.

Roy

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Wednesday, August 8th, 2012 AT 6:33 PM

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