GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Regal (China) (CNG) 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Oil Pump Replacement

Removal Procedure
  1. Remove the case side cover. Refer to Control Valve Body Cover Replacement .

    2. Object Number: 164795 Size: MH

    Notice: Do NOT remove the three bolts which hold the pump together.

  2. Remove the oil pump bolts (205-207).

    3. Object Number: 48212 Size: SH
  3. Remove the oil pump (200) from the valve body (300).
  4. Inspect the oil pump. Refer to the Transmission/Transaxle/Transfer Case Unit Repair Manual.

Installation Procedure

    Object Number: 48212 Size: SH
  1. Install the oil pump (200) to valve body (300).

    2. Object Number: 164795 Size: MH

    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 pump bolts (205-207).

    3. Tighten

        • Tighten the M6 X 1.0 X 20 bolt to 8 N·m (70 lb in).
        • Tighten the M6 X 1.0 X 85 bolt to 12 N·m (106 lb in).
        • Tighten the M6 X 1.0 X 95 bolt to 12 N·m (106 lb in).
  3. Install the case side cover. Refer to Control Valve Body Cover Replacement .