GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the right side upper diagonal brace. Refer to Front End Sheet Metal Diagonal Brace Replacement in Body Front End.
  2. Remove the throttle body air inlet duct. Refer to Throttle Body Assembly Replacement in Engine Controls - 3.8L.
  3. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.8L.

  4. Object Number: 163278  Size: SH
  5. Disconnect the overflow hose from the radiator.
  6. Disconnect the front upper retainer from coolant reservoir and front fender upper rail.
  7. Remove the coolant reservoir retainer clips and reservoir.
  8. Clean the coolant reservoir with soap and water and rinse with clean water.

Installation Procedure


    Object Number: 163278  Size: SH
  1. Install the reservoir with retainer clips.
  2. Connect the front upper retainer to coolant reservoir and front fender upper rail.
  3. Lubricate reservoir hose with clean water and route it up to radiator overflow fitting.
  4. Connect the clamp to the reservoir hose.
  5. Connect the reservoir hose and clamp to the radiator overflow fitting until the end butts against the radiator filler neck and the clamp is seated, tabs down, squarely between the radiator filler neck and the filler neck and flared end of fitting with exposed hose on both sides.
  6. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.8L.
  7. Install the throttle body air inlet duct. Refer to Throttle Body Assembly Replacement in Engine Controls - 3.8L.
  8. Connect the right side upper diagonal brace. Refer to Front End Sheet Metal Diagonal Brace Replacement in Body Front End.
  9. Add the coolant.
  10. Inspect for leaks.