GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1658301  Size: SH
  1. Remove the oil pan. Refer to Oil Pan Replacement.
  2. Place the oil pan on a clean work surface.
  3. Remove the oil pressure relief valve (455) and washer.

Installation Procedure


    Object Number: 1658301  Size: SH
  1. Inspect the NEW oil pressure relief valve for proper operation. Lightly depress the ball (2). The valve spring (1) should seat the ball to the proper closed position.
  2. Install the NEW oil pressure relief valve (455) and washer.
  3. Install the oil pan. Refer to Oil Pan Replacement.