4WD not working

Tiny
RODD BEIDA
  • MEMBER
  • 2021 CHEVROLET BLAZER
  • 3.6L
  • V6
  • 4WD
  • AUTOMATIC
  • 243,000 MILES
4wd lights on dash are all on
Sunday, August 31st, 2025 AT 1:20 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
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.
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Sunday, August 31st, 2025 AT 10:26 AM

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