GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC P42 Commercial Chassis 🢒 Engine 🢒 Engine Mechanical - 4.3L 🢒 Oil Pump Replacement

Removal Procedure

    Object Number: 31739 Size: SH
  1. Remove the oil pan. Refer to Oil Pan Replacement .

    2. Object Number: 4548 Size: SH
  2. Remove the oil pump. Refer to Oil Pump Removal .
  3. Clean and inspect all parts. Refer to Oil Pump Clean and Inspect .

Installation Procedure

    Object Number: 4548 Size: SH

    Important: Install a new oil pump driveshaft retainer.

  1. Install the oil pump driveshaft and the NEW retainer to the oil pump.
  2. Install the oil pump. Refer to Oil Pump Installation .

    3. Object Number: 31739 Size: SH
  3. Install the oil pan. Refer to Oil Pan Replacement .