GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Corvette 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Folding Top Pump with Motor Replacement

Removal Procedure

    Caution: Refer to Eye Protection Caution in the Preface section.

    Caution: Refer to Folding Top Hydraulic Pressure Caution in the Preface section.

    Caution: Refer to Servicing Electrical Components Caution in the Preface section.


    Object Number: 1507225 Size: SH
  1. Place the folding top with the #1 and #5 bow in the up position.
  2. Folding top will bleed down pressure after approximately four minutes of non use.
  3. Open the rear compartment.
  4. Disconnect the battery. Refer to Battery Negative Cable Disconnection and Connection.
  5. Place a protective covering over the rear compartment interior and the adjacent body panels.
  6. Remove the rear compartment side carpet. Refer to Rear Compartment Rear Center Trim Panel Carpet Replacement.
  7. Locate the hydraulic pump beneath the carpet in the storage compartment on the passenger side of the rear compartment.
  8. Support the rear compartment lid.

    9. Object Number: 1516642 Size: SH
  9. Remove the electrical connector (1) from the hydraulic pump bracket.

    10. Object Number: 1509583 Size: SH
  10. Disconnect the 2 electrical connectors (1) from the folding top control module (2).

    11. Object Number: 1509921 Size: SH
  11. Remove the nuts (1) from the hydraulic pump bracket.
  12. Lift the pump up and out of the storage compartment and set the pump on the protective covering.

    13. Object Number: 1247299 Size: SH
  13. Remove the reservoir filler plug (1).

    14. Object Number: 1518795 Size: SH
  14. Remove the bolts (1) from the pump manifold plate.
  15. Disengage the cylinder hoses by pulling straight up on the hoses.

    16. Object Number: 1245174 Size: SH
  16. Carefully lift up on the manifold plate (1).

    17. Object Number: 1245232 Size: SH
  17. Remove the hoses by pulling the hoses straight up from the pump. Use a clean shop towel to control any hydraulic fluid leakage.
  18. Remove the hydraulic pump from the vehicle.

    19. Object Number: 1357372 Size: SH
  19. Remove the O-ring (1) from each hose.

Installation Procedure

    Object Number: 1357372 Size: SH
  1. Install a new O-ring (1) on each cylinder hose.

    2. Object Number: 1245247 Size: SH
  2. Align the manifold plate bolt holes to the holes on the new pump. This will ensure that the cylinder hoses are placed in the correct port.
  3. Align the cylinder hoses into each port and push down until the hoses are seated properly in the hydraulic pump manifold.

    4. Object Number: 1518795 Size: SH
  4. Install the manifold plate bolts (1). Do NOT tighten.

    5. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1245241 Size: SH
  5. Push down on the manifold plate (1) and verify that all of the cylinder hoses are seated properly.

    6. Tighten
    Tighten the bolts to 10 N·m (89 lb in)


    Object Number: 1247299 Size: SH
  6. Install the reservoir filler plug (1).

    7. Object Number: 1509921 Size: SH
  7. Position the hydraulic pump to the mounting location.
  8. Apply Loctite® Blue, GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the bolts.
  9. Install the nuts (1) to the hydraulic pump bracket.

    10. Tighten
    Tighten the nuts to 18 N·m (13 lb ft).


    Object Number: 1509583 Size: SH
  10. Connect the electrical connectors (1) to the folding top control module.

    11. Object Number: 1250801 Size: SH
  11. Install the 3 electrical connectors (1) to the hydraulic pump bracket (2).
  12. Add fluid as needed. Refer to Folding Top Fluid Addition .
  13. Install the rear compartment carpet. Refer to Rear Compartment Rear Center Trim Panel Carpet Replacement.
  14. Remove the protective covering.
  15. Connect the battery. Refer to Battery Negative Cable Disconnection and Connection.
  16. Remove the rear compartment lid support.
  17. Close the rear compartment.
  18. Bleed the hydraulic system. Refer to Folding Top Hydraulic System Bleeding Procedure .
  19. Inspect the hydraulic system for fluid leaks.
  20. Inspect the hydraulic system fluid level and add fluid as needed. Refer to Folding Top Fluid Addition .
  21. Inspect the folding top for proper operation. Refer to Power Folding Top Description and Operation .