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Jill
Jill Posted on Jan 08, 2010
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My 1999 Chevy Blazer has 4-wheel drive problems. The problem begins when I start the blazer. Sometimes when it starts, the indicator lights on the shift buttons work fine and 4-wheel drive will shift without a problem. Lately, when I start the blazer one of two things will happen. 1.) the buttons for the 4-wheel drive do not light up or function at all. When this happens the "service 4-wheel drive" light appears. or 2.) the buttons light fine and the 4-wheel drive seems to work. Since it works sometimes and other times it does not, any suggestions? Also, when I restart the vehicle it sometimes will fix the problem. Thanks!

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  • 5 more comments 
  • Jill Jan 08, 2010

    Thank you for responding so quickly! Where is the switch so I can check it?

  • Jill Jan 08, 2010

    Thanks for the help. Lots of snow here and need the 4-wheel drive!!!!!

  • Jill Jan 08, 2010

    Indiana as well! snowy!!

  • Jill Jan 08, 2010

    One more question for you if you don't mind. To check the connection, does the 4-wheel drive shift switch pop out easily from the dash? Didn't know if this was any easy check.

  • Jill Jan 08, 2010

    One more question for you if you don't mind. To check the connection, does the 4-wheel drive shift switch pop out easily from the dash? Didn't know if this was any easy check.

  • Jill Jan 08, 2010

    no, not close, but I appreciate the help! Thanks again

  • Jill Jan 08, 2010

    no, not close, but I appreciate the help! Thanks again

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1 Answer

Dennis Mulford

Dennis Mulford

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  • Posted on Jan 08, 2010
Dennis Mulford
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Sounds like you have either a lose conection at the 4 wheel drive switch or a lose ground!!!!!

  • 4 more comments 
  • Dennis Mulford
    Dennis Mulford Jan 08, 2010

    its right behind the buttons!!!!!!!!

  • Dennis Mulford
    Dennis Mulford Jan 08, 2010

    snow here too im in elkhart indiana where you at?

  • Dennis Mulford
    Dennis Mulford Jan 08, 2010

    where at in indiana?

  • Dennis Mulford
    Dennis Mulford Jan 08, 2010

    id have too see the dash too see hoe it comes out?

  • Dennis Mulford
    Dennis Mulford Jan 08, 2010

    are you close too elkhart?

  • Dennis Mulford
    Dennis Mulford Jan 08, 2010

    your welcome!!!!!!

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1 Related Answer

sickforvws

sickforvws

  • 40 Answers
  • Posted on Jan 29, 2009

SOURCE: 1999 chevy blazer won't shift into 4wd

First try to disconnect the positive battery cable for 30 mins. This is the way to clear the TCM which is were the clicking is probably coming from. I hope this helps.

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