I am sure this issue is a gauge but I attached the testing below for what we need to do to prove this out.
Also, here is a video on how to replace the cluster on a Yukon that is similar. However, this is a newer truck so it may not help you but it may help others that visit this page with a similar issue.
This testing below is for your vehicle so let's run through this and see what turns up. Thanks
Thursday, April 8th, 2021 AT 3:45 PM