Lift is installed — what geometry needs to be rechecked?

I'd wait for the actual TSB/recall population, not the headline. Check whether your 2023 GMC Sierra 1500 VIN is actually in the affected batch before you plan a dealer day. That's where I'd start. On “what geometry needs to be rechecked,” that was the fork that mattered for me. Time, temperature, and whether it's in gear are the notes that actually help a shop. If your situation is the opposite, ignore me. I'd rather look cautious in this thread than stuck later.

Software recalls make me ask how much of 'driving' lives in a module now. If this is a 2027 reveal, I wouldn't map it onto today's 2023 GMC Sierra 1500 ownership costs yet. Then you'll know the next fork. If you share a photo of the worksheet, easier to sanity-check. This is me being the wet blanket on purpose.