Fuel Pump Electrical Circuit Diagnosis: Notes

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Suburban, and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Underhood Fuse/Relay Block

Courtesy of GENERAL MOTORS CORP.

Fig 2: Fuel Pump Electrical Schematic

Courtesy of GENERAL MOTORS CORP.