Sunroof System Cadillac STS I

Fastener Tightening Specifications

Fastener Tightening Specifications

Scheme 1

Scheme 2

Scheme 3

Power Roof Systems Connector End Views

Sunroof Control Module Connector End Connector Part Information OEM: 7283-8398-40 Service: 14-Way F Yazaki (L-GY) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function 1 D-BU 2640 Battery Positive Voltage 2 BK 755 Sunroof Enable Signal 3 - - Not Used 4 BK 1050 GROUND 5 OG 5029 Sunroof Switch Data (3) 6 L-BU 5027 Sunroof Switch Data (1) 7 BN 5028 Sunroof Switch Data (2) 8 PU 5032 Sunroof Switch Data (6) 9 TN 5030 Sunroof Switch Data (4) 10 PK 5031 Sunroof Switch Data (5) 11-14 - - Not Used

Sunroof Switch Connector End Connector Part Information OEM: 50-57-9408 Service: 8-Way F Molex (BK) Terminal Part Information Terminal: Terminal Seal: Release Tool: Core Crimp: Insulation Crimp: Test Probe: Pin Wire Color Circuit No. Function 1 PK 5031 Sunroof Switch Data (5) 2 L-BU 5027 Sunroof Switch Data (1) 3 YE 1491 Backlight Lamp Control 4 PU 5032 Sunroof Switch Data (6) 5 BK 850 Ground 6 TN 5030 Sunroof Switch Data (4) 7 BN 5028 Sunroof Switch Data (2) 8 OG 5029 Sunroof Switch Data (3)

Scheme 4

Diagnostic Starting Point - Roof

Before you begin any diagnostic procedure, always review the system Description and Operation. Reviewing the Description and Operation will help you determine the correct diagnostic procedure, when a malfunction exists. Reviewing the Description and Operation will also help you determine if the condition described by the customer is normal operation.

After reviewing the system description and operation, always begin the system diagnosis with the Diagnostic System Check - Vehicle in Vehicle DTC Information. The Diagnostic System Check will provide the following information

1. The identification of the control modules which command the system.
2. The ability of the control modules to communicate through the serial data circuit.
3. The identification of any stored diagnostic trouble codes and their status.

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

Symptoms - Roof

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/sts/i-2004-2007/remont/oem-general-information/#vehicle-dtc-information) in Vehicle DTC Information in order to verify that all of the following conditions are true: No DTCs are set. The control modules can communicate via the serial data link.
2. Review the system description and operation in order to learn the system functions. Refer to «Sunroof Description and Operation»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the power sunroof system. Refer to «Checking Aftermarket Accessories»(/cadillac/sts/i-2004-2007/remont/body-electrical/#wiring-systems-electrical-power-management-introduction__checking-aftermarket-accessories) in Wiring Systems.
2. Inspect the accessible system components for obvious damage or for conditions which can cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «Power Sunroof Express Open/Close Features Inoperative»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system)
2. «Power Sunroof Inoperative»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system)
3. «Power Sunroof Does Not Open»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system)
4. «Power Sunroof Express Vent Open/Close Features Inoperative»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system)
5. «Power Sunroof Does Not Open to Vent Position»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system)
6. «Power Sunroof Does Not Close»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system)
7. «Power Sunroof Does Not Close from Vent Position»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system)
8. «Retained Accessory Power (RAP) On After Timeout»(/cadillac/sts/i-2004-2007/remont/communication-devices/#computerintegrating-systems__retained-accessory-power-rap-on-after) in Retained Accessory Power, if the power sunroof should operate longer than the RAP time-out.

Diagnostic Aids

If the sunroof is experiencing an intermittent inoperative condition, check the sunroof switch ground circuit for an open. If the sunroof switch ground circuit is open, the switch may take a redundant path to ground through the switch illumination circuit. When the lights are turned On, the redundant path to ground is removed and the sunroof will become inoperative.

If the sunroof switch express signal circuit is found to be short to voltage, the sunroof switch will most likely be open.

Test Description

The number below refers to the step number on the diagnostic table.

1. 5: This step determines if the fault is the sunroof switch or the sunroof control module. It also tests the integrity of the roof express signal circuit. If the fuse in the jumper wire opens when you perform this test, a short to battery voltage may have occurred.

Power Sunroof Express Open/Close Features Inoperative

If the sunroof is experiencing an intermittent inoperative condition, check the sunroof switch ground circuit for an open. If the sunroof switch ground circuit is open, the switch may take a redundant path to ground through the switch illumination circuit. When the lights are turned On, the redundant path to ground is removed, and the sunroof will become inoperative.

A short to voltage in any one of the sunroof switch signal circuits will most likely open the switch.

By performing sunroof control module circuit tests at the inline harness connectors behind the right rear sail panel, may prevent the removal of the headliner.

The numbers below refer to the step numbers on the diagnostic table.

1. 3: This step tests the integrity of the ground circuit of the sunroof switch. If the switch illuminates when the headlamps are turned ON, the switch ground circuit is OK. Also, turning on the headlamps eliminates the possibility of the switch finding an alternative path to ground through the illumination circuit.
2. 4: This step tests the integrity sunroof switch, if the roof operates when performing this test, the switch is at fault. If the fuse in the jumper wire opens when you perform this test, a short to battery voltage may have occurred.
3. 5: This step tests for voltage in the battery positive voltage circuit at the inline connector.
4. 7: This step tests the integrity of the sunroof enable signal circuit. If the fuse in the jumper wire opens when you perform this test, a short to battery voltage may have occurred.

Power Sunroof Inoperative

If the sunroof is experiencing an intermittent inoperative condition, check the sunroof switch ground circuit for an open. If the sunroof switch ground circuit is open, the switch may take a redundant path to ground through the switch illumination circuit. When the lights are turned On, the redundant path to ground is removed and the sunroof will become inoperative.

If the sunroof open switch signal circuit is found to be short to voltage, the sunroof switch will most likely be open.

The number below refers to the step number on the diagnostic table.

1. 3: This step tests the integrity sunroof open switch, if the sunroof opens from the closed position when performing this test, the switch is at fault. If the fuse in the jumper wire opens when you perform this test, a short to battery voltage may have occurred.

Power Sunroof Does Not Open

If the sunroof is experiencing an intermittent inoperative condition, check the sunroof switch ground circuit for an open. If the sunroof switch ground circuit is open, the switch may take a redundant path to ground through the switch illumination circuit. When the lights are turned On, the redundant path to ground is removed and the sunroof will become inoperative.

If the sunroof open vent switch signal circuit is found to be short to voltage, the sunroof switch will most likely be open.

The number below refers to the step number on the diagnostic table.

1. 5: This step determines if the fault is the sunroof switch or the sunroof control module. It also tests the integrity of the vent express signal circuit. If the fuse in the jumper wire opens when you perform this test, a short to battery voltage may have occurred.

Power Sunroof Express Vent Open/Close Features Inoperative

If the sunroof is experiencing an intermittent inoperative condition, check the sunroof switch ground circuit for an open condition. If the sunroof switch ground circuit is open, the switch may take a redundant path to ground through the illumination circuit. When the lights are turned On, the redundant path to ground is removed, and the sunroof will become inoperative.

If the sunroof open vent switch signal circuit is found to be short to voltage, the sunroof switch will most likely be open.

The number below refers to the step number on the diagnostic table.

1. 3: This step tests the integrity sunroof vent open switch, if the sunroof opens to the vent position when performing this test, the switch is at fault. If the fuse in the jumper wire opens when you perform this test, a short to battery voltage may have occurred.

Power Sunroof Does Not Open to Vent Position

If the sunroof is experiencing an intermittent inoperative condition, check the sunroof switch ground circuit for an open. If the sunroof switch ground circuit is open, the switch may take a redundant path to ground through the switch illumination circuit. When the lights are turned On, the redundant path to ground is removed, and the sunroof will become inoperative.

If the sunroof close switch signal circuit is found to be short to voltage, the sunroof switch will most likely be open.

The number below refers to the step number on the diagnostic table.

1. 3: This step tests the integrity sunroof close switch, if the sunroof closes from the open position when performing this test, the switch is at fault. If the fuse in the jumper wire opens when you perform this test, a short to battery voltage may have occurred.

Power Sunroof Does Not Close

If the sunroof is experiencing an intermittent inoperative condition, check the sunroof switch ground circuit for an open. If the sunroof switch ground circuit is open, the switch may take a redundant path to ground through the switch illumination circuit. When the lights are turned On, the redundant path to ground is removed and the sunroof will become inoperative.

If the sunroof close vent switch signal circuit is found to be short to voltage, the sunroof switch will most likely be open.

The number below refers to the step number on the diagnostic table.

1. 3: This step tests the integrity sunroof vent close switch, if the sunroof closes from the vent open position when performing this test, the switch is at fault. If the fuse in the jumper wire opens when you perform this test, a short to battery voltage may have occurred.

Power Sunroof Does Not Close from Vent Position

Adjustment Procedure

1. Cycle the sunroof window from the full open to the full closed position. Fully cycle and close the sunroof window.
2. Disconnect the top side of the sunroof panel side opening closeout panel covers (5) from the 3 clips located on the inner edge of the sunroof window (1,3,4) in order to access the window adjustment screws (2,6).
3. Tape the side opening closeout panels in a downward position prior to adjusting the window.
4. Loosen the 2 adjusting screws (1) on each side of the sunroof window.
5. Center the window front to rear in the opening.
6. Adjust the front of the sunroof window (2) from flush to 1 mm (0.04 in) (1) below the top surface of the roof panel (3). Tighten: Tighten the adjustment screws to 5.8 N.m (51 lb in).
7. Adjust the rear of the sunroof window (2) from flush to 1 mm (0.04 in) above the top surface of the roof panel (1). Tighten: Tighten the adjustment screws to 5.8 N.m (51 lb in).
8. Remove the tape from the sunroof panel side opening closeout covers (2).
9. Connect the side opening closeout panel covers (5) to both sides of the sunroof window clips (1,3,4).
10. Cycle the sunroof window through all of the positions.
11. Verify the sunroof window fore/aft adjustment.
12. Verify the front and rear height adjustment.
13. Readjust the sunroof window, if necessary.

Sunroof Motor/Actuator Synchronization

Install the power sunroof actuator. Refer to Sunroof Motor/Actuator Replacement .

Sunroof Track Timing/Synchronization

1. Remove the sunroof window. Refer to «Sunroof Window Replacement»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .
2. Fabricate a gage (2) 46.8 +/- 0.5 mm (1.84 in) wide (A). A piece of thick paper will work.
3. Set the gage into the track near the rear of the opening between the move drive slide (1) and the bracket.
4. Move the drive slide fore or aft in order to get the proper setting.
5. Repeat steps 3 and 4 for the other side.
6. Install the sunroof window. Refer to «Sunroof Window Replacement»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .
7. Install the sunroof actuator. Refer to «Sunroof Motor/Actuator Replacement»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .
8. Operate the sunroof through all functions to ensure proper operation.

Scheme 5

1. Remove the headliner. Refer to «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
2. Disengage the drain hose from the drain spout (1).
3. Remove the instrument panel carrier. Refer to «Instrument Panel (I/P) Carrier Replacement»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages, and Console.
4. Fold the sound barrier (1) inward from the cowl in order to access the sunroof drain hose (2).
5. Disengage the retaining clips (1) on the A pillar.
6. Complete the following steps in order to remove the door: Open the door. Support the door with a suitable floor jack. Remove the check link bolt from the hinge pillar. Remove the hinge to door bolts. Carefully move the door away from the hinge pillar. Disengage the 4 locking tabs on the electrical harness connector to the hinge pillar. Disconnect the electrical connector. Remove the door, with an assistant.
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. 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. 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. Position the door to the vehicle, with the aid from an assistant. Connect the electrical harness connector. Push the harness inward, in order to secure the 4 locking tabs on the connector to the hinge pillar. Carefully move the door toward the hinge pillar. NOTE: Refer to Fastener Notice in Cautions and Notices. 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. Tighten: Tighten the bolts to 25 N.m (18 lb ft). Install the check link bolt. Tighten: Tighten the bolt to 9 N.m (80 lb in). NOTE: 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. Adjust the door for proper alignment. Refer to «Door Adjustment»(/cadillac/sts/i-2004-2007/remont/door-locks-anti-theft-systems/#door-system-mirror-system-window-system__door-adjustment) in Doors. Use body color paint in order to touch up the door hinge bolt heads.
7. Secure the drain hose retainers to the A pillar (1).
8. Secure the drain hose to the drain spout (1). The only suitable lubricant is clean water for the drain hose to drain spout installation.
9. Position the sound barrier (1) to the cowl.
10. Install the instrument panel carrier. Refer to «Instrument Panel (I/P) Carrier Replacement»(/cadillac/sts/i-2004-2007/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges-and-console) in Instrument Panel, Gages, and Console.
11. Install the headliner (3) with an assistant. Refer to «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.

Removal Procedure

1. Remove the headliner in order to access the upper rear drain hose connections. Refer to «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
2. Disengage the drain hoses from the drain spouts on the rear of the sunroof module.
3. Disengage the retainer clips from the rear upper drain hose (1).
4. Remove the rear compartment trim panel. Refer to «Compartment Trim Panel Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/exterior-body-panels/#body-rear-end) in Body Rear End.
5. Remove the rear lower drain hose from the retaining clips (1).
6. Remove the rear drain hose (3) from the inner wheelhouse drain spout (2).
7. Remove the drain hose from the vehicle.

1. Guide the drain hose through the rear shelf panel to the D pillar behind the shoulder belt retractor.
2. Clip the rear lower drain hose (3) into the retention clips.
3. Secure the drain hose retainer clips to the sheet metal.
4. Ensure the electrical grommet to drain hose drain spout is not pinched off after drain hose installation.
5. Install the rear compartment trim panel. Refer to «Compartment Trim Panel Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/exterior-body-panels/#body-rear-end) in Body Rear End.
6. Clip the rear upper drain hoses (2) into position.
7. Secure the rear drain hose to the drain spout. The only suitable lubricant is clean water for the drain hose to drain spout installation.
8. Inspect for proper drainage.
9. Install the headliner (3) with an assistant. Refer to «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.

Sunroof Drain Inspection and Cleaning

A drain trough encircles the sliding panel which leads to the drain spouts and into the hoses. The drain hoses are located at each corner of the housing. The two front drain hoses route down the windshield pillars and exit out the hinge pillars between the door hinges. The two rear drain hoses route down the rear sail and the quarter panels and exit the inner wheelhouse panels.

If you encounter a wet headliner or other water leak, inspect the following areas for the source of the leak

1. The windshield
2. The rear window

Verify the drainage system is not plugged or restricted. Use the following procedure

1. With the sunroof open use a one pint container, pour water into the drain trough.
2. Open the front doors.
3. Inspect for water drainage exiting through the grommets at the hinge pillar.
4. Look at the rear of the inner wheelhouse panels for water exiting the rear drain hoses.
5. If the water flow is restricted, use a low volume of compressed air in order to clear the drainage system.
6. Retest the system.
7. If water drips from the headliner above the door, lower the headliner refer «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim as required, in order to inspect for a proper drain tube connections at the drain spouts.
8. If necessary, secure the tubes onto the housing drain spouts.
9. If blockage is still present, replace the restricted drain hose. Refer to «Sunroof Drain Hose Replacement - Front»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) or «Sunroof Drain Hose Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .

1. Cycle the sunroof window to the vent position in order to ease in the removal of the forward adjusting screws (2).
2. Slide the sunshade rearward.
3. Disconnect the sunroof panel side opening closeout covers (5) from the retention clips (1,3,4) in order to access the sunroof window screws (2,6).
4. Remove the sunroof window screws from both sides.
5. Carefully lift the sunroof window from the sunroof opening.
6. Remove the screws (2) from each end of the drain channel (3).
7. Move one edge of the drain channel forward.
8. Remove the drain channel from the sunroof module opening.
9. There are 2 spring loaded retention clips (3) located on each side of the sunshade panel.
10. The clips are spring loaded into the track assembly (1).
11. In order to remove the sunshade panel, depress the panel to one side of the track assembly.
12. Release the front retention clip (3) with a flat-bladed tool.
13. Carefully arch the sunshade upward at the forward center edge.
14. Carefully lift the front edge of the sunshade (4) upward out of the opening.
15. With the sunshade panel depressed to one side of the track, release the rear retention clip.
16. Slightly rotate the sunshade panel in order to remove the panel from the track assembly.
17. Carefully remove the sunshade panel upward from the sunroof module.

1. Position rear edge of the sunshade panel to the track assembly.
2. Ensure the retention clip at the rear is positioned into the track assembly.
3. Depress the rear retention clip on the opposite side of the sunshade panel and locate the clip into the track assembly.
4. Release the retention clip.
5. Locate the front edge of the sunshade panel retention clip (2) into the track assembly (1).
6. Arch the forward edge of the sunshade in order to locate the retention clip into the sunshade track.
7. Depress the retention clip on the opposite side.
8. Locate the clip into the track assembly and release.
9. Slide the sunshade panel forward and rearward to ensure free operation is present.
10. Position the sunroof drain channel (3) to the sunroof module (4).
11. Install the screws (2). Tighten: Tighten the screws to 2 N.m (18 lb in).
12. Position the sunroof window (3) into the opening.
13. Install the sunroof window screws (1).
14. Finger tighten the screws. Do Not tighten at this time.
15. Cycle the sunroof window to the closed position.
16. Adjust the sunroof window. Refer to «Sunroof Window Height and Opening Fit Adjustment»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .
17. Secure the sunroof panel side opening closeout covers (2) into 3 retention clips on the each side of the window.
18. Close the sunshade (1).

1. Cycle the sunroof window to the rear.
2. Push down on the right front side of the air deflector.
3. While holding the right side down, complete the following steps: Push the left front side of the air deflector towards the right side. Pull up on the left side until the lower tab (1) clears the roof opening (2).
4. Swing the air deflector (1) in a vertical position, slide rearward, in order to disengage the air deflector from the hooks (2).
5. Remove the air deflector (1) from the sunroof module.

1. Engage the rear of the air deflector (1) into the side hooks (2) on the sunroof module (3).
2. Position the air deflector forward.
3. Push the right side of the air deflector down into the roof opening.
4. While holding the right side down, complete the following steps: Push the left front side of the air deflector towards the right side. Pull up on the left side until the lower tab (1) clears the roof opening.
5. Push the left front side of the air deflector inwards and down so the tab clears the roof opening.
6. Close the sunroof window.

1. Open the sunshade to the full rearward position.
2. Open the sunroof window (1) to the vent position.
3. Detach both sides of the sunroof side opening closeout panel covers (6) from the sunroof window clips (2).
4. Open the sunroof to the full open position.
5. Using a flat-bladed tool, press the locking tab (4) outward, from inside the roof opening, in order to detach the side opening closeout panel cover from the sunroof track channel (3).
6. With the lock tab (4) depressed, lift the front edge of the side opening closeout panel cover from the track, working towards the rear of the sunroof opening.
7. Repeat the steps for the entire length of the side opening closeout panel cover (6).
8. Remove the sunroof side opening closeout panel cover from the sunroof module track assembly.

1. Place in position, the new sunroof side opening closeout panel cover (6) to the sunroof module track assembly (3).
2. Hold the lower part (5) of the side opening closeout panel cover firmly and press the locking tab (4) into the track assembly.
3. Ensure the entire length of the side opening closeout panel cover (6) is secure to the sunroof assembly track.
4. Close the sunroof window (1).
5. Open the sunroof window to the vent position.
6. Secure the sunroof side opening closeout panel cover (6) to the 3 clips (2) located on the inside edge of the sunroof window.
7. Close the sunroof window.
8. Cycle the sunroof window to the vent position and full open positions in order to ensure the sunroof side opening closeout panel covers are secure to the attachment clips.
9. Close the sunroof window.
10. Close the sunshade.

1. Cycle the sunroof window to the vent position.
2. Slide the sunshade rearward.
3. Disconnect the sunroof panel side opening closeout covers (5) from the sunroof window clips (1,3,4) in order to access the window screws (2,6).
4. Tape the sunroof panel side opening closeout covers in a downward position.
5. Remove the sunroof window screws (1) on both sides.
6. Lift the sunroof window (3) from the sunroof opening.

1. Position the sunroof window (3) into the opening, with the window trade mark pointing rearward.
2. Install the sunroof window screws (1).
3. Finger tighten the screws, do not tighten.
4. Carefully close the sunroof window from the vent position to the full closed position.
5. Adjust the sunroof window. Refer to «Sunroof Window Height and Opening Fit Adjustment»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .
6. Connect the sunroof panel side opening closeout covers (2) to the sunroof window clips.
7. Snap the sunroof panel side opening closeout covers into the sunroof window retention clips.
8. Close the sunshade.
9. Cycle the sunroof window to ensure proper operation and fit.

1. Remove the overhead console. Refer to «Console Replacement - Overhead»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
2. Remove the screws (1) securing the sunroof switch to the overhead console.
3. Disconnect the electrical connector.

1. Locate the sunroof switch to the overhead console.
2. Install the screws (1) securing the sunroof switch to the overhead console. Tighten: Tighten the screws (1) to 2 N.m (18 lb in).
3. Connect the electrical connector.
4. Install the overhead console. Refer to «Console Replacement - Overhead»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.

1. Lower the formed headliner in order to access the sunroof actuator. Refer to «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
2. Cut the electrical tape (5) securing the electrical harness to the sunroof actuator.
3. Disconnect the electrical connectors (1,3) from the sunroof actuator (4).
4. Remove the screws (2) securing the sunroof actuator (4) to the sunroof module.
5. Remove the sunroof actuator.

1. Manually move the sunroof window to the full closed position.
2. Install the sunroof actuator (4) to the sunroof module.
3. Install the sunroof actuator screws (2). Tighten: Tighten the screws to 5.8 N.m (51 lb in).
4. Connect the electrical connectors (1,3).
5. Apply new electrical tape (5) in order to secure the electrical harness to the sunroof actuator.
6. Verify the sunroof operation.
7. Install the formed headliner. Refer to «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.

1. Lower the rear of the headliner to gain access to the sunroof control module. Refer to «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
2. Cut the tie strap securing the electrical harness to the drive cable tube.
3. Depress the tab (3) on the forward side of the sunroof control module (1).
4. With the lock tab (3) depressed, slide the sunroof control module towards the sunroof actuator in order to release the control module from the sunroof module assembly.
5. Disconnect the 2 electrical connectors.
6. Remove the sunroof control module from the sunroof module assembly.

1. Connect the 2 electrical connectors to the sunroof control module.
2. Position the sunroof control module tabs (2) into the sunroof module assembly slots (3).
3. Slide the sunroof control module away from the sunroof actuator until the lock tab is fully engaged.
4. An audible click should be heard when the control module is secure to the sunroof module assembly.
5. Secure the electrical harness to the drive cable tube with a new tie strap.
6. Install the headliner. Refer to «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.

1. Remove the headliner. Refer to «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
2. Remove the sunroof control unit. Refer to «Sunroof Control Module Replacement»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .
3. Remove the tape (5) securing the electrical harness to the sunroof actuator (4).
4. Disconnect the electrical connectors (1,3) at the sunroof actuator.
5. Cut the tie straps securing the electrical harness to the drive cable tube.
6. Remove the rear compartment side trim. Refer to «Compartment Trim Panel Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/exterior-body-panels/#body-rear-end) in Body Rear End.
7. Disconnect the electrical harness retainers from the rear sunroof drain hose.
8. Disconnect the electrical connector (1) at the main body electrical harness (2).
9. Carefully pull the harness from inside the vehicle up through and in behind the shoulder belt retractor.
10. Remove the electrical harness from the vehicle.

1. Position the single end connector first in behind the shoulder belt retractor down into the rear compartment.
2. Connect the electrical connector (1) to the main body electrical harness (2).
3. Install the rear compartment side trim panel. Refer to «Compartment Trim Panel Replacement - Rear»(/cadillac/sts/i-2004-2007/remont/exterior-body-panels/#body-rear-end) in Body Rear End.
4. Secure the electrical harness clips to the rear drain hose.
5. Connect the electrical connectors (1,3) to the sunroof motor.
6. Secure the harness to the sunroof motor with new electrical tape (5).
7. Connect the electrical connectors to the sunroof control unit.
8. Install the control unit to the sunroof module.
9. Ensure the locking tabs are secure.
10. Secure the electrical harness to the drive cable tube with 2 new tie straps.
11. Verify the operation of the sunroof.
12. Install the headliner. Refer to «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.

1. The old sunroof window and sunshade will need to be installed to the new sunroof module assembly. Remove the sunroof window. Refer to «Sunroof Window Replacement»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .
2. Remove the sunshade panel. Refer to «Sunroof Sunshade Panel Replacement»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .
3. Remove the headliner. Refer to «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.
4. Cut the electrical tape (5) on the sunroof actuator in order to access the electrical harness.
5. Disconnect the electrical connector on the sunroof actuator (3).
6. Disconnect the electrical connector from the sunroof module (1).
7. Cut the tie straps securing the electrical harness to the sunroof cable rear drive tube.
8. Remove the sunroof control module.
9. Disconnect the electrical connectors from the control module.
10. Disconnect the drain hoses from the front sunroof module drain spouts (1).
11. Disconnect the drain hoses from the rear sunroof module drain spouts.
12. Remove the sunroof module to the roof bolts (1).
13. Remove the 2 center, side to side, bolts last in order to help support the sunroof module to the roof ring.
14. Remove the last 2 sunroof to roof ring bolts.
15. With an assistant, lower and remove the sunroof module assembly out the passenger side door.

1. With an assistant, position the new sunroof module assembly into the alignment pins (2) located on the roof ring.
2. Hand start the 2 center, side to side, sunroof module assembly to roof bolts (1) in order to hold the sunroof module into place.
3. Finger tighten the 2 center bolts.
4. Install the remaining sunroof module to roof bolts. Tighten: Tighten all of the bolts to 9 N.m (80 lb in).
5. Connect the front and rear drain hoses to the drain spouts (1) on the sunroof module.
6. Connect the electrical connectors (1) to the sunroof motor/actuator.
7. Secure the harness with new electrical tape (5).
8. Install the sunshade. Refer to «Sunroof Sunshade Panel Replacement»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .
9. Install the sunroof window and loosely install the screws. Refer to «Sunroof Window Replacement»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .
10. Adjust the sunroof window (2). Refer to «Sunroof Window Height and Opening Fit Adjustment»(/cadillac/sts/i-2004-2007/remont/sun-rooft-topconvertible-top/#sunroof-system) .
11. Install the headliner, with an assistant. Refer to «Headliner Replacement»(/cadillac/sts/i-2004-2007/remont/exteriorinterior-trim/#interior-trim) in Interior Trim.

The Power Sunroof System consists of the following components

1. Sunroof control module
2. Sunroof switch
3. Sunroof glass, tilt/slide style, with glass sliding between the headliner and roof
4. Rail and track assembly upon which the sunroof glass rides
5. SUNROOF Fuse 20 A
6. Rear integration module (RIM)

Power and Grounds

Battery positive voltage is supplied at all times to the sunroof motor/control module assembly from the 20 A SUNROOF fuse located in the right rear fuse block. Ground is supplied to the sunroof module through the module ground circuit and G401.

Ground is supplied to the sunroof switch through the switch ground circuit and G402.

Power Sunroof Operation

The Power Sunroof System will operate only with the ignition turned to the RUN or Accessory positions, this allows for retained accessory power (RAP) control of the sunroof through the rear integration module (RIM). With the ignition in the run or accessory positions, the RIM pulls the sunroof enable circuit of the sunroof module low allowing sunroof operation. Once the ignition switch is turned to OFF the sunroof will continue to operate until any door is opened or when the RAP timer reaches its shut-off limit. For a description and operation of the RAP operation, refer to Retained Accessory Power (RAP) Description and Operation in Computer/Integrating Systems.

Sunroof Switch

The sunroof switch assembly contains two rocker type switches that are used to control the following sunroof functions

1. Roof open/close - a supervised press to the first detente of the switch
2. Roof express open/close - a momentary press to the second detente of the switch
3. Vent open/close - a supervised press to the first detente of the switch
4. Vent express open/close - a momentary press to the second detente of the switch

The sunroof switch can be used to control roof movement in an assortment of different ways from any one of the following positions

1. Press and hold the roof switch rearward to the first detente or momentarily to the second detente for the express position will move the roof as follows: From the roof closed position to the roof open position From the vent open position to the roof open position
2. Press and hold the roof switch forward to the first detente or momentarily to the second detente for the express position will move the roof as follows: From the roof open position to the roof closed position From the vent open position to the roof closed position
3. Press and hold the vent switch rearward to the first detente or momentarily to the second detente for the express position will move the roof as follows: From the roof closed position to the vent open position From the roof open position to the vent open position
4. Press and hold the vent switch forward to the first detente or momentarily to the second detente for the vent express position will move the roof as follows: From the vent open position to the vent closed position From the roof open position to the roof closed position

Roof Express Open/Close Operation

The roof express or vent express features allow for movement of the roof glass to desired positions in unsupervised modes. When the roof or vent open switch is momentarily pressed rearward to the second detente, the roof/vent open and roof/vent express signal circuits are simultaneously pulled low through the switch contacts signaling the sunroof control module of the roof/vent express open request. The module then commands the motor to move the roof glass to the requested full open position. To stop the roof in a desired position other than the full open position, momentarily press the sunroof switch in either direction to stop the movement.

The roof/vent express close feature is similar to the roof/vent express open feature, except that the roof/vent close switch signal circuit is simultaneously pulled low with the express signal circuit. The sunroof control module will then command the motor to move the roof glass to the closed position.

Roof Supervised Open/Close Operation

Supervised operation of the power sunroof system allows for the roof to be moved to a specific or desired position. When you press and hold the desired roof or vent open switch to the first detente of the switch, the roof/vent open switch signal circuit is pulled low through the switch contacts signaling the sunroof module of the roof/vent open request. The module then commands the motor to move the roof glass towards the open position until the switch is released. Closing the roof glass works similar to opening the roof, except that the roof/vent close switch signal circuit is pulled low signaling the module of the roof close request.

Sunroof Motor

The sunroof motor/module assembly has a bi-directional motor. The sunroof motor understands when it has driven the sunroof glass to the vent, close and full open positions based on the internal hall effect sensors within the sunroof motor/control module assembly. The sunroof motor/control module assembly interprets the hall effect sensor combinations and controls the sunroof motor to soft stop the sunroof glass at the positions.

See also:
• Diagnostic System Check - Vehicle
• Checking Aftermarket Accessories
• Testing for Intermittent Conditions and Poor Connections
• Retained Accessory Power (RAP) On After Timeout
• Circuit Testing
• Wiring Repairs
• Connector Repairs
• Control Module References
• Headliner Replacement
• Instrument Panel (I/P) Carrier Replacement
• Door Adjustment
• Compartment Trim Panel Replacement - Rear
• Fastener Notice
• Retained Accessory Power (RAP) Description and Operation
• Sunroof Description and Operation
• Power Roof Systems Connector End Views
• Sunroof Track Timing/Synchronization