I'm working on my sons 97 blazer S10. Having problem with the fuel pump. Trying to figure out if the problem is the pump or the relay. The problem I'm haveing doing that is I cant figure out where the pump relay is. The chiltons manuel we have doesnt tell us. Other than its on the firewall. There are 3 relays on firewall. which one is the fuel pump relay. Any help would be appreciated.

Well to all those that read my post, I figured out where the relays are.
They are in the glove box, who would of ever thought to check there!