Common locations for a fuel pump relay include:
* Under the hood in the fuse box: This is the most likely location. The fuse box is usually located near the battery. The relay itself might be labeled, or you might need to consult the fuse box diagram (often found inside the lid or in your manual).
* Under the dashboard: Less common, but possible on some GM vehicles.
Without your vehicle's specific documentation, I cannot definitively tell you where it is. Incorrectly identifying and tampering with relays can cause damage or injury.