4 wheel drive stopped working?

Tiny
DANIEL CAPICCHIONI
  • MEMBER
  • 2000 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 155,000 MILES
My truck was in 4 wheel drive yesterday and went from auto 4 wheel drive to 4 wheel low my switches show nothing also I had the computer replace about 2 years ago by hawthorne chevy it was working fine until yesterday night how do I go about to get to go back 2 wheel drive
Monday, December 21st, 2009 AT 6:32 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

You might have an issue with the transfer case control module.
As after you push the button the module sends signal to the transfer case to change the mode.
The module is located behind the passenger side kick panel (see diagram).
Replacing the module requires taking off the mounting bolt and taking off the harness.

https://www.youtube.com/c/2carpros/featured

I have attached diagrams for your reference.

Please let me know of any questions.
Thank you.
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Monday, August 30th, 2021 AT 9:17 PM

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