Roadmaster 1992

Rear Window Wiper/Washer Systems

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Removal & Installation



Washer Motor

Specific to:

Buick Roadmaster 1991-1996

Chevrolet Caprice 1993-1996

Chevrolet Impala 1994-1996

Oldsmobile Custom Cruiser 1991-1992

  1. Before servicing the vehicle, refer to the Precautions Section.
    NOTE
    Disconnecting the negative battery cable on some vehicles may interfere with the functions of the on-board computer systems and may require the computer to undergo a relearning process, once the negative battery cable is reconnected.


    NOTE
    If working near and/or around the SRS system and components, be sure to properly disable the SRS system. See disarming/arming the SRS system.


    NOTE
    For vehicles equipped with OnStar (RPO UE1), with battery backup, the backup battery is a redundant power supply to allow limited ONStar functionality in the event of a main battery power disruption to the OnStar module (VCIM). Do not disconnect the main vehicle battery or remove the OnStar fuse with the ignition key in any position other than OFF. Retained accessory power should be allowed to time out or be disabled by opening the driver-s side door before disconnecting power. Disconnecting power to the module in any way while the ignition is ON or with the retained accessory power activated may cause activation of the OnStar backup battery system and will discharge and permanently damage the backup battery. Once the backup battery is activated it will stay on until it has completely discharged. The backup battery is not rechargeable and once it is activated, it must be replaced.

  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the wiper arm and blade assembly.
  6.  
  7. Remove the trim panel.
  8.  
  9. Disconnect the electrical connector.
  10.  
  11. Remove the retaining bolts.
  12.  
  13. Remove the assembly from the vehicle.

    Click image to see an enlarged view

    Fig. Rear wiper arm assembly and related components-station wagon



    Click image to see an enlarged view

    Fig. Rear wiper module and related components-station wagon



    Click image to see an enlarged view

    Fig. Rear wiper assembly mounting-station wagon

  14.  

To install:


NOTE
Be sure to use new fasteners, as required.


NOTE
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread sealer are identified. Do not use paints, lubricants or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners.

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Using the GM diagnostic scan tool or aftermarket equivalent reprogram the necessary systems and components. Be sure to follow the scan tool manufacturer-s directions.
  4.  

Specific to:

Buick Roadmaster 1991-1996

Chevrolet Caprice 1993-1996

Chevrolet Impala 1994-1996

Oldsmobile Custom Cruiser 1991-1992


NOTE
Before servicing the vehicle, refer to the Precautions Section.


NOTE
Disconnecting the negative battery cable on some vehicles may interfere with the functions of the on-board computer systems and may require the computer to undergo a relearning process, once the negative battery cable is reconnected.


NOTE
If working near and/or around the SRS system and components, be sure to properly disable the SRS system. See disarming/arming the SRS system.


NOTE
For vehicles equipped with OnStar (RPO UE1), with battery backup, the backup battery is a redundant power supply to allow limited ONStar functionality in the event of a main battery power disruption to the OnStar module (VCIM). Do not disconnect the main vehicle battery or remove the OnStar fuse with the ignition key in any position other than OFF. Retained accessory power should be allowed to time out or be disabled by opening the driver-s side door before disconnecting power. Disconnecting power to the module in any way while the ignition is ON or with the retained accessory power activated may cause activation of the OnStar backup battery system and will discharge and permanently damage the backup battery. Once the backup battery is activated it will stay on until it has completely discharged. The backup battery is not rechargeable and once it is activated, it must be replaced.



Click image to see an enlarged view

Fig. Rear washer pump and related components-station wagon


NOTE
Using the GM diagnostic scan tool or aftermarket equivalent reprogram the necessary systems and components. Be sure to follow the scan tool manufacturer-s directions.

 
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