GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 Silhouette Ext. 🢒 Body and Accessories 🢒 Doors 🢒 Door Diagnosis - Mechanical

Description

Ensure that the sliding door is in good mechanical condition for proper operation of the Power Sliding Door (PSD). Ensure that the sliding door tracks and rollers are in good condition in order to provide a smooth sliding door operation without excessive resistance. Any sliding door mechanical problems will affect the operation of the PSD. Repair the mechanical portion of the sliding before attempting any PSD diagnosis.

The sliding door mechanical check diagnostic table inspects the entire mechanical portion of the sliding door, step by step. Follow each step carefully. Most malfunctions related to the PSD operation are related to a mechanical problem, not to the PSD components.

Diagnostic Aids
    • Inspect the upper/middle/lower sliding door track and rollers for the following conditions:
       - Dirt or foreign material
       - Damage, such as bends or rust
       - Vehicle damage due to an accident
       - Door alignment (flushness, gaps)
    • Inspect the following components for sliding door interference:
       - The weatherstrip around the sliding door
       - The interior trim panel for the sliding door B-pillar and quarter panel
       - The carpet
    • Inspect the sliding door latches and the strikers for proper operation.
    • Inspect the switch plate plungers/striker and the locating pin/pocket for proper interface.

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

  1. This step tests the sliding door tracks, rollers and cable for smooth operation.

    2.

  2. This step tests the sliding door latches for proper operation.

    3.

  3. This step inspects the sliding door gaps and flushness.

    4.

  4. This step inspects the switch plate plungers for proper interface.

    5.

  5. This step inspects the tracks for damage.

    6.

  6. This step inspects the rollers for damage.

    7.

  7. This step tests for a damaged PSD cable.

    8.

  8. This step inspects the cable for proper alignment.

    9.

  9. This step inspects the door locating pin for proper interface with the locating pocket.

    10.

  10. This step inspects the door strikers for damage.

    11.

  11. This step tests for sliding door interfaces with the vehicle.

Step

Action

Value(s)

Yes

No

1

Was the Power Sliding Door (PSD) diagnostic system check performed?

--

Go to Step 2

Go to Power Sliding Door (PSD) Diagnostic System Check

2

  1. Unlock the sliding door.
  2. Enable the PSD lockout switch (pressed position) in order to disable the PSD operation. The PSD lockout switch is located in the overhead console.
  3. Manually open the sliding door until the sliding door stops.
  4. Manually close and latch the sliding door.

Does the sliding door slide smoothly without exhibiting any of the following characteristics?

    • Roughness
    • Binding
    • Jerkiness
    • Excessive resistance

--

Go to Step 3

Go to Step 6

3

  1. Manually open the sliding door until the sliding door stops.
  2. Manually close and latch the sliding door.

Does the sliding door unlatch/latch smoothly and without excessive effort?

--

Go to Step 4

Go to Step 10

4

Inspect the sliding door for the following conditions:

    • Proper fit
    • Flushness
    • Excessive gaps

Does the sliding door exhibit the following characteristics?

    • Proper fit
    • Proper flushness
    • No excessive gaps

--

Go to Step 5

Go to Step 20

5

  1. Manually open the sliding door until the sliding door stops.
  2. Inspect the PSD switch plate (the plungers and the striker) for the following conditions:
    3. • Dirt
    • Binding
    • Damage

Is the PSD switch plate in good condition?

--

Go to Step 15

Go to Step 21

6

Inspect the following components for dirt, foreign objects, or damage:

    • The sliding door upper track
    • The sliding door center track
    • The sliding door lower track

Are the sliding door tracks in good condition?

--

Go to Step 7

Go to Step 12

7

Inspect the following components for dirt, foreign objects, or damage:

    • The sliding door upper roller
    • The sliding door center roller
    • The sliding door lower roller

Are the sliding door rollers in good condition?

--

Go to Step 8

Go to Step 13

8

While manually opening and closing the sliding door, inspect the PSD motor cable for the following conditions:

    • Kinks
    • Damage

Is the PSD cable in good condition?

--

Go to Step 9

Go to Step 14

9

  1. Remove the rear quarter trim panel. Refer to Liftgate Trim Panel Replacement in Body Rear End.
  2. Position the sliding door in order to ensure that the door is about 25 mm (1 in) from the closed position.
  3. Observe the alignment of the tensioning pins on the PSD actuator motor. Refer to Rear Side Door Actuator Cable Tension Adjustment for tensioning pin locations.

Are the tensioning pins aligned between the front and the rear double block marks on the PSD actuator motor?

--

Go to Step 15

Go to Step 16

10

Does the sliding door locating pin have a proper interface with the locating pocket?

--

Go to Step 11

Go to Step 17

11

Inspect the front and the rear sliding door strikers for the following conditions:

    • Binding
    • Damage

Are the front and the rear sliding door strikers in good condition?

--

Go to Step 18

Go to Step 19

12

Repair or replace the track(s) as necessary. Refer to one of the following procedures:

Is the repair complete?

--

Go to Step 22

--

13

Replace the roller(s) as necessary. Refer to one of the following procedures:

Is the repair complete?

--

Go to Step 22

--

14

Replace the PSD actuator motor assembly. (The cable is not serviceable separately.) Refer to Power Sliding Door Motor Clutch Replacement .

--

Go to Step 22

--

15

Inspect the vehicle body structure for possible damage. Refer to Frame and Underbody for additional information. Perform any repairs as necessary.

Is the repair complete?

--

Go to Step 22

--

16

Adjust the PSD cable. Refer to Rear Side Door Actuator Cable Tension Adjustment .

Is the repair complete?

--

Go to Step 22

--

17

Adjust or replace the sliding door locating pin or pocket as necessary. Refer to Rear Side Door Locator Replacement or to Locating Pin Pocket Replacement - Sliding Door .

Is the repair complete?

--

Go to Step 22

--

18

  1. Inspect the sliding door for possible interference of the following items. Repair as necessary.
    2. • The door inner trim panel
    • The carpet retainer
    • The weatherstrip
  2. Inspect for a faulty pressure relief valve. Refer to Pressure Relief Valve Replacement in Body Rear End. Repair as necessary.

Is the repair complete?

--

Go to Step 22

--

19

Adjust or replace the striker(s) as necessary. Refer to one of the following procedures:

Is the repair complete?

--

Go to Step 22

--

20

Adjust the sliding door. Refer to Sliding Rear Side Door Adjustment .

Is the repair complete?

--

Go to Step 22

--

21

Replace the PSD switch plate plungers and/or striker. Refer to Sliding Door Jamb Contact Plate Replacement .

Is the repair complete?

--

Go to Step 22

--

22
  1. Turn the ignition switch to the LOCK position.
  2. Reinstall any components that were removed.
  3. Perform the PSD re-initialization procedure. Refer to Power Sliding Door (PSD) Re-Initialization .

Does the PSD operate normally?

--

System OK

Go to Power Sliding Door (PSD) Diagnostic System Check