Originally Posted by
GMPX
Valet mode is not hidden in the GM code, we have written the routine ourselves and patched it into the GM O.S.
You know GM did this back with the ZR1 ECM!!.
Yeah, the best part....it is activated by a hidden switch, you don't need to flash the PCM every time you want it enabled.
My neighbours must think my car is crap, when I was testing it I had valet set to 40KMH (that is user adjustable), so here's my car missing and spluttering up the street...little do they know :lol: