* Change dashboard command of GM to use packer
Also, separate "follow distance" from "engaged".
* Fix dashboard setSpeed scaling
old-commit-hash: 012727ef60
In 2017 Volts, PCM fault occurs for a few seconds if ACC gas
is commanded while user presses gas pedal. PID winds up,
and when PCM fault clears, car gets a "max gas" jolt.
In 2018 Volts, PCM fault doesn't time out, which means pre-enable
doesn't work at all, and car would slowly decelerate, while openpilot
thinks it's engaged.
old-commit-hash: 9653f9d6a6
Vasily Tarasov
Vehicle Researcher
Jamezz
AlexMcInerney
dekerr