Quote Originally Posted by JoshMcMadMac View Post
Just remember: voltage hurts, amperage kills. There is more to the equation then 12V DC.
True, but all of the components in the car are protected by fuses, which blow with amperage.

He's right that for a lot of issues in TSBs GM has recommended disconnecting the battery and reconnecting it as part of the troubleshooting. Wouldn't be wise to do that if you're going to hurt the customer's car.