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ACC Annoyance, Limitation, Bug?

1795 Views 7 Replies 8 Participants Last post by  Kraven
I think I've encountered this a few times:
1. Running in stop-and-go traffic with ACC active
2. Car in front completely stops and the volt completely stops.
3, Car in front starts moving and doesn't slow or stop
4. I hit "+" on Volt to get Volt moving again
5. Volt accelerates to about 6 MPH and moves about 20-30 feet and just stops for no reason.

Look in the rear view mirror and see the nice man in the Silverado about to plow me over for stopping for no reason, and then I hit "+" again and everything is fine. Be interesting to get a code/reason for why the Volt determined it needed to stop.

The other strange behavior was in the beginning of this same commute, I went to turn ACC on. Kept hitting "set" and nothing it wouldn't come on and take over. Maybe after the 3rd set attempt it finally came on and took over.

Appeared to me ACC was having a bad day - grey and overcast conditions, 50 degrees, no rain or other obstructions, flat road, not curvy or hilly.
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Today was my first experience with ACC in any vehicle, but it happened to be a 2017 Volt.

It got a workout. 80 miles at an average speed of 19 mph, all congested freeway.

At first, I saw the hiccups and was pissed. But after experimenting a bit, if the traffic stops and the car stops, I wait for the lead car to move about 10 feet before hitting resume, and leave the distance setting on the middle setting. After that, it stopped literally 100 times or more without an issue with cruise set at 75mph.

It scared the snot out of me for an hour. But eventually I got used to it, and ... arggghhh... I LIKE IT!!! OK, I said it. It made a really nasty rush hour freeway nice and relaxing.

Didn't care much for Lane Keep Assist though. When there is no emergency lane in the #1 lane on a freeway, I'm pretty sure it would hit the K-rail and damage the car.
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