GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Impala 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Oil Pressure Relief Valve Replacement

Removal Procedure

    Object Number: 1411866 Size: SH
  1. Open the hood.
  2. Remove the oil fill cap.
  3. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  4. Remove the oil pan drain plug (430) and O-ring (429).
  5. Allow the oil to drain into an appropriate container.

    6. Object Number: 1411868 Size: SH
  6. Remove the engine oil filter (437). Allow the rest of the engine oil to drain into an appropriate container.

    7. Object Number: 1602761 Size: SH
  7. Remove the oil pan cover bolts.
  8. Remove the valve lifter oil pressure relief valve (455).

Installation Procedure

    Object Number: 1602761 Size: SH
  1. Install the valve lifter oil pressure relief valve (455).

    2. Object Number: 1411956 Size: SH
  2. Inspect the valve lifter oil pressure relief valve for proper operation. Lightly depress the valve (2). The valve spring (1) should seat the valve to the proper closed position.

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the oil pan cover bolts and cover.

    4. Tighten
    Tighten the bolts to 12 N·m (106 lb in).


    Object Number: 1411868 Size: SH
  4. Install a NEW engine oil filter (437).

    5. Object Number: 1411866 Size: SH
  5. Install the oil pan drain plug (430) and O-ring (429).
  6. Lower the vehicle.
  7. Fill the engine with the appropriate amount and type of NEW engine oil. Refer to Approximate Fluid Capacities and Fluid and Lubricant Recommendations .
  8. Check the oil level.
  9. Install the oil fill cap.
  10. Open the hood.
  11. Reset the engine oil lift monitor, if necessary. Refer to GM Oil Life System Resetting .