2021 Suburban Service 4WD Light on

[DMCO]

I have a 2021 Sub LM2 with 61,000. My Service 4WD Light came on just after dealer flushed my Transmission Fluid. Car driving fine, some noise from front end when turning -- any suggestions? Thanks D

 

[Big Mama]

Wow you’re just out of factory warranty. Did you go back to the shop that flushed your fluid? Do you have a scan tool? If not stores like Auto Zone will read it for you. The code usually points you in the right direction.

 

[StephenPT]

Check out this thread -
Thread 'Service 4wd on 2021 gmc Yukon'
https://www.tahoeyukonforum.com/threads/service-4wd-on-2021-gmc-yukon.145235/