Roadmaster 1992

Exterior Lighting

Print

Headlights



Aiming

The headlamps should be aimed with a special alignment tool, state regulations may vary this procedure, refer to the illustrations below, as necessary.


CAUTION
Halogen bulbs contain gas under pressure. Handling a bulb improperly could cause it to shatter into flying glass fragments. Always wear eye and hand protection when replacing a bulb.


NOTE
Turn off the headlight switch and allow the bulb to cool, before removing it. Leave the switch off until the bulb is replaced. Handle the bulb only by its base. Avoid touching the glass.


NOTE
Place the used bulb in the new bulbs carton. Be sure to properly dispose of used bulbs as per bulb manufacturers disposal instructions.


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. Headlamp checking and aiming (1 of 2)



Click image to see an enlarged view

Fig. Headlamp checking and aiming (2 of 2)


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.

Removal & Installation
Assembly

CAUTION
Halogen bulbs contain gas under pressure. Handling a bulb improperly could cause it to shatter into flying glass fragments. Always wear eye and hand protection when replacing a bulb.


NOTE
Turn off the headlight switch and allow the bulb to cool, before removing it. Leave the switch off until the bulb is replaced. Handle the bulb only by its base. Avoid touching the glass.


NOTE
Place the used bulb in the new bulbs carton. Be sure to properly dispose of used bulbs as per bulb manufacturers disposal instructions.

  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. Raise and safely support the vehicle.
  6.  
  7. Remove the front side marker cornering lamps.

    Click image to see an enlarged view

    Fig. Front side marker assembly and related components-Roadmaster sedan



    Click image to see an enlarged view

    Fig. Front side marker assembly and related components-except Roadmaster sedan

  8.  
  9. Remove the bulbs from the headlight assembly, by twisting counterclockwise.
  10.  
  11. Disconnect the electrical connectors.
  12.  
  13. Remove the bolts/screws.
  14.  
  15. Remove the component from the brace.

    Click image to see an enlarged view

    Fig. Front end panel and related components-except Roadmaster



    Click image to see an enlarged view

    Fig. Front end panel and related components-Roadmaster



    Click image to see an enlarged view

    Fig. Headlamp assembly and related components

  16.  

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.  

Bulb

CAUTION
Halogen bulbs contain gas under pressure. Handling a bulb improperly could cause it to shatter into flying glass fragments. Always wear eye and hand protection when replacing a bulb.


NOTE
Turn off the headlight switch and allow the bulb to cool, before removing it. Leave the switch off until the bulb is replaced. Handle the bulb only by its base. Avoid touching the glass.


NOTE
Place the used bulb in the new bulbs carton. Be sure to properly dispose of used bulbs as per bulb manufacturers disposal instructions.

  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 bulbs from the headlight assembly, by twisting counterclockwise.

    Click image to see an enlarged view

    Fig. Front headlight bulbs and related components

  6.  

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.  

Tail Lights



Removal & Installation
Assembly

At this time the manufacturer does not provide removal and installation procedures for this component, refer to the illustration as required.


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. Taillight and related components-Caprice sedan and Impala SS



Click image to see an enlarged view

Fig. Taillight and related components-Roadmaster sedan



Click image to see an enlarged view

Fig. Taillight 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.

Bulb
  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 interior trim panels, as required.
  6.  
  7. Remove the taillight bezel.
  8.  
  9. Remove the taillight lens.
  10.  
  11. Remove the seal.
  12.  
  13. Remove the housing, as necessary.
  14.  
  15. Remove the bulbs.

    Click image to see an enlarged view

    Fig. Taillight and related components-Caprice sedan and Impala SS



    Click image to see an enlarged view

    Fig. Taillight and related components-Roadmaster sedan



    Click image to see an enlarged view

    Fig. Taillight and related components-station wagon

  16.  

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.  

Testing



Brake & Turn Signals

Modern turn signals first came into general use in the United States in the 1950's. Testing the turn signal circuit can be done with a simple test light.

 
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