GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Chevy C Cab/Chassis HD (GMT 400) 🢒 Engine 🢒 Engine Mechanical - 8.1L 🢒 Oil Filter Bypass Valve Replacement

Removal Procedure

    Object Number: 452375 Size: SH
  1. Remove the engine oil filter. Refer to Engine Oil and Oil Filter Replacement .
  2. Loosen the oil filter fitting using a hex wrench.

    3. Object Number: 471026 Size: SH
  3. Remove the oil filter fitting.
  4. Inspect the oil filter fitting, replace if necessary.

    5. Object Number: 471143 Size: SH
  5. Remove the oil filter bypass valves.

    6. Unstake the tangs on the oil bypass valves and remove with long nose pliers.

  6. Discard the oil bypass valves.

Installation Procedure

    Object Number: 471143 Size: SH
  1. Install NEW oil filter bypass valves. Stake the tangs on the oil bypass valves.

    2. Object Number: 471026 Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  2. Install the oil filter fitting.

    3. Tighten
    Tighten the oil filter fitting to 66 N·m (49 lb ft).

  3. Install the oil filter. Refer to Engine Oil and Oil Filter Replacement .