Jerry, look at GSP from two positions: YOUR dealership (primary), and General Motors (secondary).
Both share the same goal: Make money. GSP is only a merchadising program that tries to attract non-warranty parts sales. While the big message is the 'life-time warranty', GM will cover the part every time it fails while you cover the labor when the customer comes back to you. Don't you already have some sort of guaranty on repairs, why not make some of them for life? The real unknown is the cost of the parts. With GSP, GM is telling me that it is worth it to them (a money-maker) to absorb the cost of future part failures just to sell that part one time. That's a pretty big gamble.
The question should be: Would GSP work for YOU? Will/Can it make money for YOU? That depends on YOUR market. If you are the respected service facility with little competition, then don't do it because you don't need it. If you are in a metro area, GSP can be a differentiator: Not all dealers will sign-up and I don't know of many independants that offer long-term warranties.
You'll hear how uncomfortable dealers are because of the unknown cost of future labor for covered repairs, but that's a small investment. You will always create profit the initial time you do the repair (thru labor) and the customer still has to come back to you AT LEAST TWICE for a covered repair before it starts to cost.
scott
[This message has been edited by sallen1 (edited 09-11-99).]
[This message has been edited by sallen1 (edited 09-11-99).]