[Seveniron]

I was reading the maintainence booklet last night and it said GM doesn't recommend additional rust proofing and in some cases some rust proofing is actually bad for the car.

Yet their dealers try to push it on you when you buy the vehicle. Hmmmm strange indeed. The finance guy at my dealer tried long and hard to sell me on the electronic rust proof module and likely will try again once the vehicle is delivered and I sign. I have no intention of getting it however.