Quote:
Originally Posted by SlickGT1
I was just recently on a very steep hill. I was surprised that the car actually coasted down on its own without the HDC or brakes. It seems like it just locked up first gear. I have a 4.8, so don't know if the trans does something different.
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I believe the PCM does detect inclines, and combined with driver inputs for throttle and brakes it then uses pre-programmed logic to hold gears accordingly. That's actually pretty standard on automatics these days. I find it helps with braking on steep decents, but selecting first or second manually works better on really steep hills.