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blschaefer1's avatar
blschaefer1
New Contributor
10 months ago

OnStar Light Red - Service Driver Assist Message - '25 Sierra 1500 Denali Ultimate

I purchased a new '25 Sierra 1500 Denali Ultimate about a month ago. At about 900 miles I got a 'Service Driver Assist' message every time I started the truck, and the Supercruise function would not ...
Celee99's avatar
Celee99
New Contributor
5 months ago

Mine does the exact same thing it’s so frustrating. Did they ever come up with a fix on yours?

catman29's avatar
catman29
New Contributor II
20 days ago

Finally yes. Reprogrammed the On Star module or something to that effect. The dealership was at a loss as to how to diagnose. I really think GM has no idea why this was happening.