4 wheel drive stopped working?

2000 CHEVROLET BLAZER
155,000 MILES • 6 CYL • 4WD • AUTOMATIC
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DANIEL CAPICCHIONI
  • MEMBER
  • 1 POST
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
Dec 21, 2009 at 10:32 AM
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SQM
  • ✓Experienced 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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Aug 30, 2021 at 2:17 PM
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