K 1500 Yukon 4WD V8-5.3L VIN Z Flex Fuel (2003)
Fuel Pump Relay: Locations
Fuel Pump Relay Secondary - With Dual Tanks
FUEL PUMP RELAY - SECONDARY
(Vehicles with Dual Tanks Only)
Fuel Pump Relay - Secondary - Duel Tanks
The Fuel Pump Relay - Secondary is attached to the Underhood Fuse Block Bracket. The Underhood Fuse Block is located at the left side of the engine
compartment, to the rear of the battery.