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4WD AND IT DOES WORK IN 4LOW ALSO I HERE A CLICKING SOUND COMING FROM THE MODULE ON THE PASSENGER...
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Problem for Chevrolet 1999 Blazer
Can you tell me how to diagnose the 4wd on my 1999
By leightonscyc on Oct 17, 2009
Can you tell me how to diagnose the 4wd on my 1999 Blazer? What is supposed to happen when you press any of the buttons to select either 4wd hi, 4wd lo, auto, or 2wd ?
Best Solution
posted on Oct 17, 2009
THE 4WD IS VACUMME OVER ELECTRIC.YOU MAY HAVE A VACUMME LEAK OR A ELECTRICAL PROBLEM.THE SERVO MOTER ON THE FRONT DIFF IS THE USUAL CULPRIT BUT THEY ARE EXPENSIVE SO ELIMINATE EVERYTHING ELSE FIRST.CHECK FUES AND THE VACUMME LINES.
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