Sierra 1500 2WD V6-4.3L VIN X (2004)
Oil Pressure Regulator Valve: Service and Repair
Oil Filter Bypass Valve Replacement
Removal Procedure
1. Raise and suitably support the vehicle.
2. Position a suitable container under the vehicle to catch the oil.
3. Remove the oil filter.
4. Using a suitable prying tool, remove the oil filter bypass valve.
5. Clean and inspect the valve bore for damage.
Installation Procedure
1. Install a NEW oil filter bypass valve using the following procedure:
1. Use a brass drift that is the same diameter as the outside diameter of the oil filter bypass valve.
2. Install the oil filter bypass valve into the oil gallery bore until slightly below flush with the surface of the engine block.
3. Using a pointed punch, stake the engine block area around the oil filter bypass valve. Stake in 3 locations 120 degrees apart.
