Question about 2001 Chevrolet Blazer

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'01 Chevy Blazer transmission randomly switches from 2 to 4 wheel

Replaced the acuator control switch already.

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Try this.My Blazer the same.Took the dash switch out, removed the back plate from the switch.Cleaned the four brass contact areas on the circuit board with a pencil eraser, then rubbing alcohol.Re-installed & works perfectly.

Posted on Sep 10, 2009

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