When you put it into L, that’s what disables it. L9 is when you limit to the 9th gear in L mode. So for example, when you put into L6, you limit it to the 6th gear. There’s nothing could go wrong to put it into L9. Its just that you turn off the start stop function.So,my question is ...why when I use L9 in my 2020GMC Terrain Denali the start stop is disabled ? Also is there anything that could go wrong using L9 as opposed to D ?
I have also found that if you come to a stop without holding foot down hard on brake pedal the start stop does not function....but it is a pain in the ass.....it was my own fault for not asking when I was buying.....it would have been the deal killer for me.