I can not release the Extended Ride Height for my 2008 Hummer H2.
I tried million times to deactivate by the switch on the instrument panel. I hear the compressor is working but remaining at the same height.
By the owner manual if the vehicle is at Extended Ride Height and the speed exceeds 40mph(64km/h) the system will automatically return the vehicle to Normal Ride Height – I tried this, too- I went with 100 km/h and is still at Extended Ride Height.

Has anybody an idea what should I do?

 

Ya call the dealer and say...whats going on...

 

They have no clue that's the problem and in the top of everything the closest dealer is 7 hours away from me.

 

When you start the vehicle, does the ride height light come on by itself? Maybe there is something wrong within the switch, causing it to be depressed all the time. Also, is the Air Compressor working all the time? Even with the raised height, the Compressor should shut off once the 2" extra have been reached. No need for it to pump air into the bags unless there is a leak. Good luck, Indy.