4wd not working

2021 CHEVROLET BLAZER
243,000 MILES • 3.6L • V6 • 4WD • AUTOMATIC
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RODD BEIDA
4wd lights on dash are all on
Aug 31, 2025 at 1:20 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,494 POSTS
  • ASE Certified Mechanic
Okay, we need to run the codes to see what is going on and what part of the 4wd system is having an issue. Please go over this video to show you how.

https://youtu.be/u-4syLc-ifQ

You can use a regular scanner as well, o go y an auto parts store and they will run the codes for you. Please go over this guide and get back to us so we can help you fix it.
Aug 31, 2025 at 10:26 AM
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