Problems with 2025 equinox

[tem3]

"Never shifts to 8th gear. Runs in 7th all the time." How does one determine that?

 

[RIT333]

You can count the upshifts by watching the tachometer. I think your time spent behind the wheel is better spent watching for cars than watching the tachometer.
However, it would be easy for GM to display on the dash what hear you are currently operating in. They probably chose not to do this, as it might display any flaws in the transmission !