GM Service Manual Online
For 1990-2009 cars only

Tail Lamp Assembly and /or Backup, Sidemarker, Stop, Turn Signal Bulb Replacement SWB

Removal Procedure - Backup Light Bulb

    Caution: Refer to Battery Disconnect Caution in the Preface section.

  1. Disconnect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Open the rear compartment lid.

  3. Object Number: 1939189  Size: SH
  4. Remove the rear compartment lid trim clips and remove the trim.

  5. Object Number: 1946831  Size: SH
  6. Remove the rear compartment lining clip and pull back the lining for access to the rear bulbs.

  7. Object Number: 1946868  Size: SH
  8. Remove the backup light bulb (1) and socket (2) from the rear lamp assembly by pushing and rotating the bulb counterclockwise.
  9. Remove the backup light bulb (1) from the socket by pushing and rotating the bulb counterclockwise.

Installation Procedure - Backup Light Bulb


    Object Number: 1946866  Size: SH
  1. Install the new backup light bulb (1) into the socket (2) by pushing and rotating the bulb clockwise.
  2. Important: The different-sized tabs on the bulb base and mating cut-outs in the tail lamp assembly allow the bulb to seat correctly.

  3. Install the backup light bulb (1) and socket (2) into the rear tail lamp assembly and secure by rotating the socket clockwise.
  4. Connect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection .
  5. Check all vehicle lights for correct operation.

  6. Object Number: 1946831  Size: SH
  7. Install the rear compartment lining and reinstall clip to secure lining.

  8. Object Number: 1939189  Size: SH
  9. Install the rear compartment lid trim and reinstall the clips to secure the trim.

Removal Procedure - Rear Indicator Bulb

    Caution: Refer to Battery Disconnect Caution in the Preface section.

  1. Disconnect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Open the rear compartment lid.

  3. Object Number: 1939189  Size: SH
  4. Remove the rear compartment lid trim clips and remove the trim.

  5. Object Number: 1946831  Size: SH
  6. Remove the rear compartment lining clip and pull back the lining for access to the rear bulbs.

  7. Object Number: 1946874  Size: SH
  8. Remove the rear indicator light bulb (1) and socket (2) from the rear tail lamp assembly by rotating the socket counterclockwise.
  9. Remove the rear indicator light bulb (1) from the socket (2) by pushing and rotating the bulb counterclockwise.

Installation Procedure - Rear Indicator Bulb

  1. Install the new rear indicator light bulb into the socket by pushing and rotating the bulb clockwise.

  2. Object Number: 1946871  Size: SH

    Important: The different-sized tabs on the bulb base and mating cut-outs in the tail lamp assembly allow the bulb to seat correctly.

  3. Install the rear indicator light bulb (2) and socket (1) into the rear tail lamp assembly and secure by rotating the socket clockwise.
  4. Connect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection .
  5. Check all vehicle lights for correct operation.

  6. Object Number: 1946831  Size: SH
  7. Install the rear compartment lining and reinstall clip to secure lining.

  8. Object Number: 1939189  Size: SH
  9. Install the rear compartment lid trim and reinstall the clips to secure the trim.

Removal Procedure - Stop/Tail Lamp Bulb

    Caution: Refer to Battery Disconnect Caution in the Preface section.

  1. Disconnect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Open the rear compartment lid.

  3. Object Number: 1939189  Size: SH
  4. Remove the rear compartment lid trim clips and remove the trim.

  5. Object Number: 1946831  Size: SH
  6. Remove the rear compartment lining clip and pull back the lining for access to the rear bulbs.

  7. Object Number: 1946863  Size: SH
  8. Remove the stop/tail lamp bulb (1) and socket (2) from the rear tail lamp assembly by rotating the socket counterclockwise.
  9. Remove the stop/tail light bulb (1) from the socket (2) by pushing and rotating the bulb counterclockwise.

Installation Procedure - Stop/Tail Lamp Bulb


    Object Number: 1946834  Size: SH
  1. Install the new stop/tail light bulb (1) into the socket (2) by pushing and rotating the bulb clockwise.
  2. Important: The different-sized tabs on the bulb base and mating cut-outs in the tail lamp assembly allow the bulb to seat correctly.

  3. Install the stop/tail lamp bulb (1) and socket (2) into the rear tail lamp assembly and secure by rotating the socket clockwise.
  4. Connect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection .
  5. Check all vehicle lights for correct operation.

  6. Object Number: 1946831  Size: SH
  7. Install the rear compartment lining and reinstall clip to secure lining.

  8. Object Number: 1939189  Size: SH
  9. Install the rear compartment lid trim and reinstall the clips to secure the trim.

Removal Procedure - Tail Lamp Assembly

    Caution: Refer to Battery Disconnect Caution in the Preface section.

  1. Disconnect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection .

  2. Object Number: 1939189  Size: SH
  3. Remove the rear compartment lid trim clips and remove the trim.

  4. Object Number: 1946831  Size: SH
  5. Remove the rear compartment lining clip and pull back the lining for access to the rear tail lamp assembly.

  6. Object Number: 1946832  Size: SH
  7. Disconnect the rear tail lamp electrical connector (2).
  8. Remove the rear tail lamp to rear end panel retaining nuts (1).

  9. Object Number: 1946857  Size: SH
  10. Remove the rear tail lamp assembly from the vehicle.

Installation Procedure


    Object Number: 1946876  Size: SH

    Important: Make sure the rear tail lamp sealing surface is clean to avoid damage to painted vehicle surface and to prevent water leaks.

  1. Install the rear tail lamp assembly to the vehicle.
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1946832  Size: SH
  3. Install the rear tail lamp assembly retaining nuts (1).
  4. Tighten
    Tighten the nuts to 3.00 N·m (27 lb in).

  5. Connect the rear tail lamp assembly electrical connector (2).
  6. Connect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection .
  7. Check all lights for the correct operation.

  8. Object Number: 1946831  Size: SH
  9. Install the rear compartment lining clip and pull back the lining for access to the rear tail lamp assembly.

  10. Object Number: 1939189  Size: SH
  11. Install the rear compartment lid trim clips and remove the trim.

Tail Lamp Assembly and /or Backup, Sidemarker, Stop, Turn Signal Bulb Replacement LWB

Removal Procedure - Backup Light Bulb (LED tail lamp)

  1. Open the rear compartment lid.

  2. Object Number: 1939160  Size: SH
  3. Remove the rear compartment lid trim clips and remove the trim.

  4. Object Number: 1946831  Size: SH
  5. Remove the rear compartment lining clip and pull back the lining for access to the rear bulbs.

  6. Object Number: 1946882  Size: SH
  7. Remove the backup light bulb (1) and socket (2) from the rear tail lamp assembly by rotating the socket counterclockwise.
  8. Remove the backup light bulb (1) from the socket (2) by pushing and rotating the bulb counterclockwise.

Installation Procedure - Backup Light Bulb (LED tail lamp)

  1. Install the new backup light bulb into the socket by pushing and turning the bulb clockwise.

  2. Object Number: 1946880  Size: SH

    Important: The different-sized tabs on the bulb base and mating cut-outs in the tail lamp assembly allow the bulb to seat correctly.

  3. Install the backup light bulb (1) and socket (2) into the rear tail lamp assembly and secure by rotating the socket clockwise.
  4. Check all vehicle lights for correct operation.

  5. Object Number: 1946831  Size: SH
  6. Install the rear compartment lining and reinstall clip to secure lining.

  7. Object Number: 1939189  Size: SH
  8. Install the rear compartment lid trim and reinstall the clips to secure the trim.

Removal Procedure - Rear Indicator Bulb (LED tail lamp)

  1. Open the rear compartment lid.

  2. Object Number: 1939160  Size: SH
  3. Remove the rear compartment lid trim clips and remove the trim.

  4. Object Number: 1946831  Size: SH
  5. Remove the rear compartment lining clip and pull back the lining for access to the rear bulbs.

  6. Object Number: 1946878  Size: SH
  7. Remove the rear indicator light bulb (2) and socket (1) from the rear tail lamp assembly by rotating the socket counterclockwise.
  8. Remove the rear indicator light bulb (2) from the socket (1) by pushing and rotating the bulb counterclockwise.

Installation Procedure - Rear Indicator Bulb (LED tail lamp)


    Object Number: 1946835  Size: SH
  1. Install the new rear indicator light bulb (2) into the socket (1) by pushing and rotating the bulb clockwise.
  2. Important: The different-sized tabs on the bulb base and mating cut-outs in the tail lamp assembly allow the bulb to seat correctly.

  3. Install the rear indicator light bulb (2) and socket (1) into the rear tail lamp assembly and secure by rotating the socket clockwise.
  4. Check all vehicle lights for correct operation.

  5. Object Number: 1946831  Size: SH
  6. Install the rear compartment lining and reinstall clip to secure lining.

  7. Object Number: 1939189  Size: SH
  8. Install the rear compartment lid trim and reinstall the clips to secure the trim.

Removal Procedure - Stop/Tail Lamp Bulb (LED tail lamp)

Important: If the stop or tail LED's are faulty and do not illuminate, the tail lamp assembly must be replaced.

Refer to Removal Procedure - Tail Lamp Assembly (LED tail lamp) within this procedure for LED tail lamp replacement.

Removal Procedure - Tail Lamp Assembly (LED tail lamp)

  1. Open the rear compartment lid.

  2. Object Number: 1939160  Size: SH
  3. Remove the rear compartment lid trim clips and remove the trim.

  4. Object Number: 1946831  Size: SH
  5. Remove the rear compartment lining clip and pull back the lining for access to the rear tail lamp assembly.

  6. Object Number: 1946883  Size: SH
  7. Disconnect the electrical connector (1) from the rear tail lamp assembly.
  8. Remove nuts (2) that secure the rear tail lamp assembly, to rear body panel.
  9. Remove the tail lamp assembly from the vehicle.

Installation Procedure - Tail Lamp Assembly


    Object Number: 1946883  Size: SH

    Important: Make sure the rear tail lamp sealing surface is clean to avoid damage to painted vehicle surface and to prevent water leaks.

  1. Install the new rear tail lamp assembly to the vehicle.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the nuts (2) that secure the rear tail lamp assembly to the rear body panel.
  4. Tighten
    Tighten the nuts to 3.0 N·m (27 lb in).

  5. Connect the electrical connector (1) to the rear tail lamp assembly.
  6. Check all vehicle lights for correct operation.

  7. Object Number: 1946831  Size: SH
  8. Install the rear compartment lining and reinstall clip to secure lining.

  9. Object Number: 1939189  Size: SH
  10. Install the rear compartment lid trim and reinstall the clips to secure the trim.