Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Fuel Pressure Release: Service and Repair
Throttle Body Injected Engines
1. Remove fuel pump fuse from fuse box.
2. Start engine and allow to run until supply of fuel in pipes is depleted.
3. Crank engine an additional 3 seconds to ensure relief of any additional fuel pressure.
4. Turn ignition Off and replace fuel pump fuse.
Port Injected Engines
1. Disconnect fuel tank harness connector.
2. Start engine and allow to run until supply of fuel in pipes is depleted.
3. Crank engine an additional 3 seconds to ensure relief of any additional fuel pressure.
4. Turn ignition Off and reconnect fuel tank harness connector.
