The rev limiter should be that 4,000 but when you click the case learn it will let it go all the way to red line.
You also can not be running a scan when you attempt a case learn. You can connect to the vehicle to allow the special function tab to work but you can not be scanning. It's not going to prompt anything when you do it using HP Tuners from the sounds of it. If it works it will allow you to rev past the normal park/neutral rev limiter. You'll hit the limiter and it will sync itself on the way down to idle.
If you are throwing no codes for the cam/crank, there technically isn't a reason to perform the case learn.
Other scan tools like a GM tech 2 or MDI and even the aeroforce will function different. Like the AF will tell you what to do and complete and exit
