K 1500 Truck 4WD V8-6.5L DSL Turbo VIN S (1999)
Fuel Supply Line: Service and Repair
Fuel Feed and Fuel Return Pipe Purge Procedure
CAUTION: The water/diesel fuel mixture is flammable. The water/diesel fuel mixture could be hot. In order to help avoid personal injury and
property damage, do not touch the fuel coming from the drain hose. Also do not expose the fuel to open flames or sparks.
Be sure you do not overfill the container. Heat (such as from the engine) can cause the fuel to expand. If the container is too full, fuel could be
forced out of the container. This could lead to the risk of personal injury and vehicle damage.
1. Open the air bleed valve on top of the fuel manager/filter.
2. Connect a hose to the air bleed valve located on top of the fuel manager/filter and place the other end of the hose into a suitable container.
3. Remove the ECM 1 fuse from the underhood relay center.
4. Crank the engine in 10 to 15 second intervals until clear fuel is observed at the air bleed hose (wait for 1 minute between cranking intervals to
cool down starter motor).
5. Close the air bleed valve.
6. Install the ECM 1 fuse in the underhood relay center.
7. Start the engine and allow to run for 5 minutes at idle.
8. Check for fuel leaks.
9. Clear all engine DTCs.
