I had the same issue on my 2021 GMC Yukon Denali Diesel. First issue started around 4k miles. The dealership completed the following to resolve the issue:
Serial Data Gateway Module Reprogramming with SPS
Radio Reprogramming with SPS (Includes USB)
EMISSION REDUCTION FLUID TANK RESERVOIR...
2021 GMC Yukon Denali Diesel with 4WD. I'm currently averaging 25mpg on the first 1350 miles. I recently averaged 32mpg on a relatively flat 100 mile highway trip with the cruise set at 72 mph. Significant mpg improvement over my previous 2001, 2007 and 2015. Also nice to be able to go 650+...
I'm in the same boat with a '21 Denali Diesel order. It has been pending pickup from GM for over three weeks. If you need it before March, you probably should look at the current inventory.
Hi Everyone! I have a 2015 Tahoe. Over the past few months I noticed that the rear drivers side door didn't always unlock when I put in park. Now it does not lock or unlock with the other doors. Is this a Door Lock Actuator issue? If so, it this is a difficult DIY repair?
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.