Service Procedure
1. Turn the windshield wipers ON and then OFF to allow them to cycle one time to ensure that they are in the parked position before beginning.
2. Open the hood.
Important
Note the location of the wiper blades on the windshield before removal.
3. Lift the wiper arm (1) and raise it approximately 50 mm (2 in) from the glass.
4. Release the locking tab at the base of the wiper arm (2) by sliding the tab outwards with a flat-bladed tool.
5. With a flat-bladed tool, pull the wiper arm off the transmission (3).
Notice
Applying a layer of masking tape on the wiper transmissions in the next step will help prevent paint damage to the air inlet grille when removing and installing it.
6. Apply layer of masking tape over the knurls on the wiper transmissions.
7. Release the retainer dips on the air inlet grille end panels from the vehicle by applying upward pressure to the panel.
8. Remove the air inlet grille end panels from the vehicle.
9. Remove the screw (1) from each side of the air inlet grille panel.
10. Remove the two black push-in type fasteners (2) from the front edge of the air inlet grille panel.
Notice
There are four retaining dips (3) located under the air inlet grille that attach it to the body. To avoid damaging the towers located on the underside of the panel in the next step, DO NOT attempt to remove it by pulling hard quickly. New retaining clips will be used later in this procedure.
11. Slide your fingers from the outside edge of the panel inwards until they are below one of the dips. Gradually lift the air inlet grille panel upwards as necessary at that location to release that dip. Repeat this step on the three remaining dips.
Important
Do not disconnect the washer hose when repositioning in the next step.
12. Reposition the panel out of the way.
13. Inspect the wiper motor for the manufacturing location.
^ If the wiper motor has printing (2) on it that reads "Trico Products Made in England," DO NOT replace the motor. Proceed to Step 31 and reassembly the vehicle.
^ If the wiper motor has a white label (1) on it that reads "Passed Insp," along with a bar code, REPLACE the motor. Please be advised that ALL replacement wiper motors from GMSPO are good stock regardless of manufacturing location. THIS INCLUDES REPLACEMENT WIPER MOTORS WITH WHITE LABELS. Proceed to the next step.
14. Disconnect the vehicle wiring harness electrical connector from the wiper motor.
15. Remove the three bolts (1) that attach the wiper module to the vehicle.
16. Remove the wiper module from the vehicle.
Important
The location of the crank arm to the bracket must be marked in the next step to assure that the crank arm is installed correctly on the new motor. Not marking the crank arm position may result in the arm being installed out-of-position on the new motor. This condition may result in the wiper arm/blades parking incorrectly on the windshield when the wipers are turned off or traveling off the windshield when in use.
17. Mark the location of the crank arm on the bracket. This will be used for proper positioning of the crank arm on the new motor.
18. Remove the nut attaching the crank arm to the wiper motor and remove the arm.
19. Remove the three bolts attaching the wiper motor to the wiper module bracket.
20. Remove the wiper motor and do not reuse.
Important
The new wiper motor being installed is already in the PARK position. This position is required for properly installing the crank arm. Do not rotate or turn the motor shaft prior to installing the crank arm.
21. Position the wiper motor on the bracket and install the three attaching bolts.
Tighten
Tighten the bolts to 12 N.m (106 lb in).
22. Align the crank arm with the mark on the bracket and install the arm on the motor shaft. Press down on the arm to engage it on the knurls on the motor shaft.
23. Install the nut. Tighten
Tighten the nut to 25 N.m (18 lb ft).
24. Install the wiper module to the vehicle and install the three attaching bolts.
Tighten
Tighten the bolts to 9 N.m (80 lb in).
25. Connect the vehicle wiring harness electrical connector to the wiper motor.
26. Remove the masking tape from the wiper transmissions.
Important
Temporarily installing the wiper arms in the next step allows you to verify that the crank arm is positioned correctly on the motor before installing the air inlet grille panel.
27. Align the key on the wiper arm with the detent on the wiper transmission. With the locking tab in the open position, push the wiper arm onto the transmission.
28. Turn the ignition switch to the ON position and verify proper wiper and washer operation. Turn the wiper switch to the OFF position.
^ If the crank arm has been instead correctly on the motor, the wiper arm/blades with PARK at the located noted at the beginning of this procedure. Proceed to the next step.
^ If the crank arm has NOT been instead correctly on the motor, the wiper arm/blades with NOT park at the location noted at the beginning of this procedure. It will be necessary to remove and reinstall the crank arm correctly before proceeding.
29. Remove the wiper arms from the transmissions.
30. Apply a new layer of masking tape over the knurls on the wiper transmissions.
31. Install four new retaining dips on the bottom side of the air inlet grille panel.
32. Position the air inlet grille pan to the vehicle and press downward to engage the four new retaining dips.
33. Install the two black push-in type fasteners at the front edge of the air inlet grille panel.
Notice
To avoid cracking the panel in the next step, finger-start the screw at each end of the panel. DO NOT tighten either screw until both have been finger started.
34. Finger-start the screw located at each end of the air inlet grille panel. After both screws are finger-started, tighten them.
Tighten
Tighten the screws to 2 N.m (18 lb in).
35. Position the air inlet grille end parts to the vehicle and press downward to engage the retaining dips.
36. Remove the masking tape from the wiper transmissions.
37. Align the key on the wiper arm with the detent on the wiper arm transmission. With the locking tab in the open position, push the wiper arm onto the transmission.
38. Verify that the wiper arm is fully seated on the transmission and then dose the locking tab.
39. Install the GM Recall Identification Label.