4 WHEEL DRIVE ENGAGE BUT LIGHT BLINKING.

  • Tiny
  • zepeda4392
  • 2000 Chevrolet Blazer
  • 144,000 miles

I have a 2000 Chevy Blazer LT 4.3L. Push button 4 wheel drive with the automatic 4 wheel button. The problem that I have is that when I push in 4HI the light blinks and goes away. When I push 4LO the light just keeps blinking. I can hear the transfer case engage and the actuator in the cab clicking. The front wheels are locked in cause I can feel the power. So my question is why is the light blinking in 4LO and disappearing in 4HI?

Saturday, July 13th, 2013 AT 9:26 PM

4 Answers

  • Tiny
  • hmac300
  • Expert
  • 43,014 posts

Check to see if encoder motor ontcase is getting power common failure

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Sunday, July 14th, 2013 AT 7:49 AM
  • Tiny
  • zepeda4392
  • Member

Okay is that just power with key on? Does it have to have the 4wheel engaged? Also would I just check that with a volt meter?

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Sunday, July 14th, 2013 AT 9:47 AM
  • Tiny
  • hmac300
  • Expert
  • 43,014 posts

The key on and power engaged, a voltmeter or test light will work.

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Sunday, July 14th, 2013 AT 9:52 AM
  • Tiny
  • zepeda4392
  • Member

Okay. Thank you I will try that and get back to you.

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Sunday, July 14th, 2013 AT 10:45 AM

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