Where is the fuel pump relay located on a 3500?

The fuel pump relay on a Chevrolet 3500 is typically located in the under-hood fuse box. In some models, you may also find it in the engine compartment or near the battery. To locate it precisely, refer to the owner's manual or the fuse box cover, which often has a diagram indicating the relay's position. Always ensure the vehicle is turned off and the key is removed before attempting to access the relay.