How to report Super Cruise map errors?

Hello.  I am new here and hoping you can help me.  I recently got a 2025 GMC Yukon with Super Cruise.  It has generally been working well with the exception of a stretch of highway 23 between Sheboygan, WI and Fond du Lac, WI.  That stretch of highway went through a major rebuild a couple of years ago, but it is all completed now.  However, I think the maps that are referenced for Super Cruise do not reflect the current road conditions.

That highway is divided 4 lanes (2 in each direction) and practically new.  When I am headed East from Fond Du Lac, and engage Super Cruise, it ALWAYS says it detects road construction.  It shuts off at times saying it does not have road references, when everything is clear and well marked.  It is VERY strange because there is no construction, the roads are clear, and the painted stripes are practically new and extremely well marked.  Super Cruise acts like the road is still under construction, but that has long since been completed.  How can you report this to have a system engineer review the map references to ensure everything is up-to-date?

I had an exceptionally frustrating call tonight on my drive home when I engaged OnStar, explained to the rep I wanted to report some discrepancies and ask that section of highway be reported to the Super Cruise Team to review.  The representative put me on hold for 20 minutes (BTW - the On-Star on-hold system is exceptionally annoying... repeating the same thing over and over with a loud ding every minute... I was going insane... reminded me of being back in the 90's!), then a new rep came on the call and started the process over saying someone transferred the call to him, then he put me on hold for 15 minutes, came back and said he had to transfer my call, started over with another rep, same thing... only to come back on and explain there was nothing they could do!  And that I needed to take the car to the dealership!  OnStar proved to be a complete waste to me tonight and very frustrating... represented themselves as an old tech system that is getting outpaced by others!  I would cancel my OnStar subscription if I could, but my car is a company vehicle and I can't.

I am not an idiot and tech savvy.  I know there is not a problem with my vehicle as the system works well on other roads and consistently does the same thing at the exact same locations every time.  The problem is with the map references which are out of date for that section of highway and I simply want someone to look at it and see if it can be updated.  My guess is that a good system engineer will have it resolved in minutes.  Or if the problem is with the accuracy coming from a government agency maintaining the mapping information, GM could at least report it and ask that it be reviewed.

I make this drive every day and if I am dealing with this for the next couple of years I will be exceptionally frustrated.

All that said, I am impressed with Super Cruise.  I also have a Rivian and enjoy the Highway Assist Technology they employ.  Super Cruise is on-par if not better, especially with automatically changing lanes to move around slower vehicles.  However, their service techs when you call for assistance (their version of OnStar) are head and shoulders better than what I experienced tonight.

Please help to restore some confidence for me by advising how I can report this section of highway to have it reviewed and hopefully updated.  Thank you for listening!  Dave