Originally Posted by wakespeak
Edit: dealer says HSA cannot be turned off.
I'd bet if you could find the wires that transmit car inclination information to the BCM or whatever computer sets the HA, you could turn it off either permanently or switchably so. Naturally, the dealer can't/won't tell you that, because it wouldn't be a "by the book" procedure.
The aftermarket tunes that people don't worry much about installing aren't "by the book" either . . .
Thanks and a tip of the hat to Dupree for prodding a little thought this morning.