GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2009 🢒 CTS 🢒 Roof 🢒 Sunroof 🢒 Sunroof Housing Front Drain Hose Replacement

Removal Procedure
  1. It is only necessary to lower the headliner. Only do those steps in the headliner replacement procedure that will lower the headliner enough to gain access to the part. Refer to Headlining Trim Panel Replacement.

    2. Object Number: 758127 Size: SH
  2. Disengage the drain hose from the drain spout (1).

    3. Object Number: 786924 Size: SH
  3. Remove the instrument panel (I/P) carrier. Refer to Instrument Panel Lower Trim Panel Replacement.
  4. Fold the sound barrier (1) inward from the cowl in order to access the sunroof drain hose (2).

    5. Object Number: 758125 Size: SH
  5. Disengage the retaining clips (1) on the A-pillar.

    6. Note: The door must be removed prior to removing the drain hose (1) from the hinge pillar.

  6. Complete the following steps in order to remove the door:

    7. Object Number: 787982 Size: SH
    6.1. Open the door.
    6.2. Support the door with a suitable floor jack.
    6.3. Remove the check link bolt from the hinge pillar.
    6.4. Remove the hinge to door bolts.
    6.5. Carefully move the door away from the hinge pillar.
    6.6. Disengage the 4 locking tabs on the electrical harness connector to the hinge pillar.
    6.7. Disconnect the electrical connector.
    6.8. Remove the door, with an assistant.

    Note: Attach a cord to the drain spout end of the drain hose in order to re-route the new drain hose in the original location.

  7. Attach a cord to the end of the drain hose.
  8. Carefully guide the sunroof drain hose (1) outward from the front hinge pillar.

    9. Object Number: 758128 Size: SH
  9. Remove the drain hose (1) from the vehicle.
  10. Remove the drain hose from the cord.

Installation Procedure
  1. Attach the cord to the drain spout end of the new drain hose.

    2. Object Number: 787982 Size: SH
  2. Install the front drain hose into the hinge pillar guide hole.
  3. Guide the drain hose (1) up through the hinge pillar panel near the A-pillar (2) while pulling on the cord.
  4. Secure the grommet end (1) to the hinge pillar.
  5. Remove the cord from the drain hose.
  6. Complete the following steps in order to install the door:
    7. 6.1. Position the door to the vehicle, with the aid from an assistant.
    6.2. Connect the electrical harness connector.
    6.3. Push the harness inward, in order to secure the 4 locking tabs on the connector to the hinge pillar.
    6.4. Carefully move the door toward the hinge pillar.

    Caution: Refer to Fastener Caution in the Preface section.

    6.5. Apply Loctite® Blue, GM P/N 12345382 (Canadian P/N 10953489) or the equivalent to the door hinge bolts.

    Install the hinge to pillar bolts and tighten to 25 N·m (18 lb ft).

    6.6. Install the check link bolt and tighten to 9 N·m (80 lb in.

            Caution: Striker alignment is a crucial part of door latch operation. Do not use the door striker to adjust the door to the vehicle. Failure to properly adjust the striker can result in damage to the door latch and the striker.

    6.7. Adjust the door for proper alignment. Refer to Door Adjustment.
    6.8. Use body color paint in order to touch up the door hinge bolt heads.

    Object Number: 758125 Size: SH
  7. Secure the drain hose retainers to the "A" pillar (1).

    8. Object Number: 758127 Size: SH
  8. Secure the drain hose to the drain spout (1).

    9. The only suitable lubricant is clean water for the drain hose to drain spout installation.


    Object Number: 786924 Size: SH
  9. Position the sound barrier (1) to the cowl.
  10. Install the instrument panel carrier. Refer to Instrument Panel Lower Trim Panel Replacement.
  11. Install the headliner. Refer to Headlining Trim Panel Replacement.