Every Service Light On

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Djb4704

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Hello all,

I have a 2018 Yukon Denali with right at 68,000 miles. It has ran like a dream up until today.
When I got in to start it this evening every service light came on, all the way from the trailer brake to the Stabilitrak and ABS light. The fuel gage is also staying on E at startup and it doesn't show any range. (I filled up yesterday so i know it's full)

Has anyone encountered this before? Or are there any simple things I can try before having it hauled into the dealer.

Any and all advice is greatly appreciated!
 

STORMIN08

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I know it is an 18, but that can generally be sign of a weak battery or bad connection.

Start with the freebies...check terminals, Ground connections and have the battery load tested.

I am willing to bet you have a dead cell
 
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