GM Service Manual Online
For 1990-2009 cars only

Instrument Panel Lower Trim Panel Replacement Impala

Tools Required

J 38778 Door Trim Pad Clip Remover

Removal Procedure

    Caution: Refer to SIR Caution in the Preface section.

  1. Disable the SIR system. Refer to SIR Disabling and Enabling and SIR Disabling and Enabling in SIR.
  2. Caution: Refer to Battery Disconnect Caution in the Preface section.

  3. Disconnect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

  4. Object Number: 519324  Size: SH
  5. Release the left instrument panel (I/P) insulator tabs from the lower I/P trim pad retainers.
  6. Rotate the courtesy lamp counterclockwise in order to disconnect the courtesy lamp from the left I/P insulator.
  7. Remove the left I/P insulator from the stud at the accelerator pedal.
  8. Remove the left I/P insulator.
  9. Remove the left I/P fuse block access hole cover.

  10. Object Number: 519517  Size: SH
  11. Remove the bolts from the steering column opening filler panel.
  12. Release the filler panel retainers from the lower trim panel. Carefully lower the filler panel away from the trim panel.
  13. Disconnect the electrical connector from the rear compartment release switch.
  14. Remove the steering column opening filler panel.

  15. Object Number: 454278  Size: SH
  16. Remove the I/P driver knee bolster bracket screws.
  17. Remove the knee bolster bolts at the I/P lower trim panel.
  18. Remove the knee bolster bolts at the instrument carrier. Remove the I/P driver knee bolster.

  19. Object Number: 519536  Size: SH
  20. Remove the access opening cover from the right I/P.
  21. Use J 38778 in order to remove the push-in retainer from the right I/P insulator.
  22. Release the right I/P insulator from the I/P lower trim panel.
  23. Rotate the courtesy lamp counterclockwise in order to remove the lamp from the right I/P insulator.
  24. Remove the right I/P insulator.

  25. Object Number: 519555  Size: SH
  26. Remove the I/P compartment screws.
  27. Open the I/P compartment.
  28. Carefully remove the I/P compartment.
  29. Remove the floor console, if equipped. Refer to Front Floor Console Replacement .
  30. Remove the steering column. Refer to Steering Column Replacement in Steering Wheel and Column.

  31. Object Number: 601131  Size: SH
  32. Using a small, flat-bladed tool, carefully remove the ignition switch cylinder bezel.

  33. Object Number: 578987  Size: SH
  34. Remove the screws from the I/P cluster trim plate.
  35. Beginning at the right, grasp the trim plate and carefully pull rearward.
  36. Continue working around the trim plate until you have released all of the retainers from the trim pad.
  37. Disconnect the electrical connectors from the hazard switch and from the traction control switch, if equipped.
  38. Remove the I/P cluster trim plate.
  39. Remove the ignition switch bolts and reposition the ignition switch. Refer to Ignition and Start Switch Replacement .
  40. Remove the radio. Refer to Radio Replacement in Entertainment.
  41. Remove the HVAC control assembly. Refer to Heater and Air Conditioning Control Replacement in HVAC Systems-Manual.
  42. Remove the headlamp switch. Disconnect the electrical connector from the headlamp switch. Refer to Headlamp Switch Replacement in Lighting Systems.
  43. Remove the hood latch release handle. Refer to Hood Primary Latch Release Cable Handle Replacement in Body Front End.

  44. Object Number: 658375  Size: SH
  45. Disconnect the data link connector.
  46. Remove the garnish moldings from the left and the right windshield pillar. Refer to Windshield Pillar Garnish Molding Replacement in Interior Trim.

  47. Object Number: 519305  Size: SH
  48. Starting at the right side, carefully lift upwards on the I/P upper trim panel in order to release the retainers. Continue working to the left until you have released all of the retainers.
  49. Disconnect the daytime running lamps sensor from the I/P upper trim panel.
  50. Remove the I/P upper trim panel.
  51. Disconnect the electrical connector from the remote keyless entry (RKE) module.
  52. Remove the RKE module.

  53. Object Number: 454282  Size: SH
  54. Remove the I/P upper trim pad screws. Release the I/P insulator retainers near the windshield.
  55. Remove the I/P upper trim pad.
  56. Remove the I/P cluster. Refer to Instrument Cluster Replacement .
  57. Remove the SIR inflator module. Refer to Inflatable Restraint Instrument Panel Module Replacement in SIR.

  58. Object Number: 787156  Size: SH
  59. Remove the screws that secure the I/P lower trim panel to the cross-car beam.
  60. Reposition the I/P wiring harness.
  61. Remove the I/P lower trim panel from the vehicle.

Installation Procedure


    Object Number: 519552  Size: SH
  1. Position the I/P lower trim panel within the vehicle.
  2. Reposition the I/P wiring harness.
  3. Notice: 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 locking compound or sealant are identified in the service procedure. 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 in order to avoid damage to parts and systems.

  4. Install the screws which secure the I/P lower trim panel to the cross vehicle beam in the order indicated in the graphic.
  5. Tighten
    Tighten the screws to 10 N·m (89 lb in).

  6. Install the SIR inflator module. Refer to Inflatable Restraint Instrument Panel Module Replacement in SIR.
  7. Install the I/P cluster. Refer to Instrument Cluster Replacement .

  8. Object Number: 519561  Size: SH
  9. Install the screws which secure the I/P lower trim panel to the passenger knee bolster.
  10. Tighten
    Tighten the screws to 2 N·m (18 lb in).


    Object Number: 454282  Size: SH
  11. Position the I/P upper trim pad to the I/P. Install the I/P insulator retainers near the windshield.
  12. Install the I/P upper trim pad screws.
  13. Tighten

        • Tighten the horizontal screws to 2 N·m (18 lb in).
        • Tighten the vertical screws to 10 N·m (89 lb in).

    Object Number: 519305  Size: SH
  14. Install the remote keyless entry (RKE) module.
  15. Connect the RKE module electrical connector.
  16. Position the I/P upper trim panel to the upper I/P. Connect the daytime running lamps (DRL) sensor to the I/P upper trim panel. Verify that the DRL sensor wiring harness is not pinched when you install the panel.
  17. Starting at the left side, install the trim panel retainers to the upper I/P. Continue working to the right until you have installed all of the retainers.
  18. Install the garnish moldings to the right and to the left windshield pillar. Refer to Windshield Pillar Garnish Molding Replacement .

  19. Object Number: 658375  Size: SH
  20. Install the data link connector. Install the screws that secure the data link connector.
  21. Tighten
    Tighten the screws to 2 N·m (18 lb in).


    Object Number: 578987  Size: SH
  22. Install the hood latch release handle. Refer to Hood Primary Latch Release Cable Handle Replacement in Body Front End.
  23. Install the headlamp switch. Refer to Headlamp Switch Replacement in Lighting Systems.
  24. Install the HVAC control assembly. Refer to Heater and Air Conditioning Control Replacement in HVAC Systems-Manual.
  25. Install the radio. Refer to Radio Replacement in Entertainment.
  26. Install the ignition switch. Refer to Ignition and Start Switch Replacement .
  27. Install the I/P cluster trim plate to the I/P lower trim panel.
  28. Connect the electrical connectors to the hazard switch and to the traction control switch, if equipped.
  29. Carefully press the I/P cluster trim plate into the I/P lower trim panel. Fully engage all of the retainers.
  30. Install the I/P cluster trip plate screws.
  31. Tighten
    Tighten the screws to 2 N·m (18 lb in).


    Object Number: 601131  Size: SH
  32. Install the ignition switch cylinder bezel.
  33. Install the steering column. Refer to Steering Column Replacement in Steering Wheel and Column.
  34. Install the floor console, if equipped. Refer to Front Floor Console Replacement .

  35. Object Number: 519555  Size: SH
  36. Align the I/P compartment to the opening.
  37. Install the I/P compartment screws.
  38. Tighten
    Tighten the screws to 2 N·m (18 lb in).

  39. Close the I/P compartment. Verify that the compartment is properly aligned. Adjust as required.

  40. Object Number: 519527  Size: SH
  41. Position the right I/P insulator to the vehicle. Insert the retainer into the insulator.
  42. Rotate the courtesy lamp clockwise in order to connect the lamp to the insulator.
  43. Align and install the right I/P insulator with the push-in retainer.
  44. Lift upward on the insulator. Install the insulator tabs to the I/P lower trim panel.

  45. Object Number: 519536  Size: SH
  46. Install the right I/P fuse block access opening cover.

  47. Object Number: 519543  Size: SH
  48. Align the driver knee bolster bracket to the I/P. Install the bolts to the knee bolster at the instrument carrier in the sequence shown.
  49. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  50. Install the knee bolster bolts to the I/P lower trim panel.
  51. Tighten
    Tighten the bolts to 2 N·m (18 lb in).

  52. Install the I/P driver knee bolster bracket screws.
  53. Tighten
    Tighten the screws to 10 N·m (89 lb in).


    Object Number: 519517  Size: SH
  54. Position the filler panel for the steering column opening to the vehicle. Install the rear compartment release switch.
  55. Connect the electrical connector to the rear compartment release switch
  56. Align the filler panel to the I/P lower trim panel. Install the filler panel retainers to the I/P lower trim panel.
  57. Install the filler panel bolts.
  58. Tighten
    Tighten the bolts to 2 N·m (18 lb in).


    Object Number: 519316  Size: SH
  59. Install the access opening cover to the left I/P.
  60. Position the left I/P insulator to the vehicle. Install the insulator to the stud at the accelerator pedal.
  61. Rotate the courtesy lamp clockwise in order to connect the courtesy lamp to the left I/P insulator.
  62. Install the left I/P insulator tabs to the lower I/P trim pad.
  63. Enable the SIR system. Refer to SIR Disabling and Enabling and SIR Disabling and Enabling in SIR.
  64. Connect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

Instrument Panel Lower Trim Panel Replacement Monte Carlo

Removal Procedure

    Caution: Refer to SIR Caution in the Preface section.

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


    Object Number: 519316  Size: SH
  1. Disable the SIR system. Refer to SIR Disabling and Enabling and SIR Disabling and Enabling in SIR.
  2. Disconnect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  3. Release the left instrument panel (I/P) insulator tabs from the lower I/P trim pad.
  4. Rotate the courtesy lamp counterclockwise in order to disconnect the courtesy lamp from the left I/P insulator.
  5. Remove the left I/P insulator from the stud at the accelerator pedal.
  6. Remove the left I/P insulator.

  7. Object Number: 519517  Size: SH
  8. Remove the steering column filler panel. Refer to Steering Column Opening Filler Replacement .

  9. Object Number: 454278  Size: SH
  10. Remove the knee bolster bracket screws.
  11. Remove the knee bolster bolts at the I/P lower trim panel.
  12. Remove the knee bolster bolts at the instrument carrier. Remove the knee bolster from the I/P.
  13. Remove the steering column. Refer to Steering Column Replacement in Steering Wheel and Column.

  14. Object Number: 519499  Size: SH
  15. Remove the I/P cluster trim plate screws.
  16. Starting at the right I/P cluster trip plate, grasp the trim plate and carefully pull rearward.
  17. Continue working around the I/P cluster trim plate until you have released all of the retainers from the I/P lower trim panel.
  18. Disconnect the electrical connectors from the hazard switch.
  19. Remove the I/P cluster trim plate.
  20. Remove the ignition cylinder bolts. Reposition the ignition cylinder.
  21. Remove the radio. Refer to Radio Replacement in Entertainment.
  22. Remove the HVAC control assembly. Refer to Heater and Air Conditioning Control Replacement in HVAC Systems-Manual.

  23. Object Number: 580278  Size: SH
  24. Disconnect the floor console storage bin lamp, if equipped.
  25. Remove the headlamp switch. Disconnect the headlamp switch electrical connector. Refer to Headlamp Switch Replacement in Lighting Systems.
  26. Disconnect the hood latch release handle. Push the hood release handle through the opening in the I/P.

  27. Object Number: 658375  Size: SH
  28. Remove the data link connector screws and disconnect the data link connector.

  29. Object Number: 519478  Size: SH
  30. Remove the I/P cluster. Refer to Instrument Cluster Replacement .

  31. Object Number: 615708  Size: SH
  32. Remove the garnish moldings from the left and the right windshield pillar. Refer to Windshield Pillar Garnish Molding Replacement in Interior Trim.
  33. Disconnect and reposition the left fuse block wiring harness.

  34. Object Number: 455174  Size: SH
  35. Starting at the right side, carefully lift upwards on the I/P upper trim panel in order to release the retainers. Continue working to your left until you have released all of the retainers.
  36. Disconnect the daytime running lamps sensor from the I/P upper trim panel.
  37. Remove the I/P upper trim panel.

  38. Object Number: 519555  Size: SH
  39. Remove the I/P compartment. Refer to Instrument Panel Compartment Replacement .
  40. Remove the right upper I/P trim plate. Refer to Instrument Panel Upper Trim Plate Replacement .
  41. Remove the right lower I/P trim plate. Refer to Instrument Panel Lower Trim Plate Replacement .

  42. Object Number: 579686  Size: SH
  43. Remove the I/P upper trim pad screws.
  44. Reach under the I/P upper trip pad and release the retainers from the remote keyless entry (RKE) module.
  45. Disconnect the electrical connector.
  46. Remove the RKE module.
  47. Disengage the I/P insulator retainers near the windshield from the I/P upper trim pad.
  48. Remove the I/P upper trim pad. Refer to Instrument Panel Upper Trim Pad Replacement .

  49. Disconnect the electrical connector from the inflatable restraint I/P module.
  50. Remove the inflatable restraint I/P module. Refer to Inflatable Restraint Instrument Panel Module Replacement in SIR.
  51. Remove the right I/P insulator. Refer to Instrument Panel Insulator Panel Replacement - Right Side .

  52. Object Number: 615708  Size: SH
  53. Disconnect and reposition the right I/P fuse block wiring harness.

  54. Object Number: 580716  Size: SH
  55. Remove the small I/P lower trim panel screws.

  56. Object Number: 787957  Size: SH
  57. Remove the large I/P lower trim panel screws.
  58. Reposition the I/P wiring harness.
  59. Remove the I/P lower trim panel from the vehicle.

Installation Procedure


    Object Number: 580719  Size: SH
  1. Position the I/P lower trim panel to the vehicle.
  2. Position the I/P wiring harness to the original location on the I/P assembly.
  3. Notice: 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 locking compound or sealant are identified in the service procedure. 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 in order to avoid damage to parts and systems.

  4. Install the large I/P lower trim panel screws in the order shown in the graphic.
  5. Tighten
    Tighten the screws to 10 N·m (89 lb in).


    Object Number: 580716  Size: SH
  6. Install the small I/P lower trim panel screws.
  7. Tighten
    Tighten the screws to 2 N·m (18 lb in).


    Object Number: 615708  Size: SH
  8. Connect the right I/P fuse block wiring harness.
  9. Install the right I/P insulator. Refer to Instrument Panel Insulator Panel Replacement - Right Side .

  10. Object Number: 579686  Size: SH
  11. Install the inflatable restraint I/P module. Connect the electrical connector to the inflatable restraint I/P module . Refer to Inflatable Restraint Instrument Panel Module Replacement in SIR.
  12. Position the I/P upper trim pad to the upper I/P.
  13. Install the I/P insulator retainers to the I/P upper trim pad.

  14. Reach under the I/P upper trim pad and position the RKE wiring harness through the I/P upper trim pad opening. Install the RKE module. Connect the electrical connector to the RKE module.
  15. Install the I/P upper trim pad screws.
  16. Tighten

        • Tighten the horizontal I/P upper trim pad screws to 2 N·m (18 lb in).
        • Tighten the vertical I/P upper trim pad screws to 10 N·m (89 lb in).

    Object Number: 519555  Size: SH
  17. Install the right lower I/P trim plate. Refer to Instrument Panel Lower Trim Plate Replacement .
  18. Install the right upper I/P trim plate. Refer to Instrument Panel Upper Trim Plate Replacement .
  19. Install the I/P compartment. Refer to Instrument Panel Compartment Replacement .

  20. Object Number: 455174  Size: SH
  21. Position the I/P upper trim panel to the vehicle. Connect the daytime running lamps (DRL) sensor to the I/P upper trim panel.
  22. Important:  Do NOT pinch the DRL sensor wiring harness when you install the I/P upper trim panel.

  23. Starting at the left side, install the trim panel retainers into the upper I/P. Continue working to your right until you have installed all of the retainers.

  24. Object Number: 615708  Size: SH
  25. Connect the left fuse block wiring harness.

  26. Object Number: 519478  Size: SH
  27. Install the garnish moldings to the right and to the left windshield pillar. Refer to Windshield Pillar Garnish Molding Replacement in Interior Trim.
  28. Install the I/P cluster. Refer to Instrument Cluster Replacement .

  29. Object Number: 658375  Size: SH
  30. Install the data link connector.
  31. Tighten
    Tighten the data link connector screws to 2 N·m (18 lb in).

  32. Push the hood release handle through the opening in the I/P. Connect the hood latch release handle. Refer to Hood Primary Latch Release Cable Handle Replacement in Body Front End .
  33. Connect the headlamp switch electrical connector. Install the headlamp switch. Refer to Headlamp Switch Replacement in Lighting Systems.

  34. Object Number: 580278  Size: SH
  35. Connect the floor console storage bin lamp, if equipped.
  36. Install the HVAC control module. Refer to Heater and Air Conditioning Control Replacement in HVAC Systems-Manual.
  37. Install the radio. Refer to Radio Replacement in Entertainment.

  38. Object Number: 519619  Size: SH
  39. Install the ignition switch to the I/P.
  40. Install the ignition switch bolts.
  41. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 519499  Size: SH
  42. Position the I/P cluster trim plate to the I/P lower trim panel.
  43. Connect the electrical connector to the hazard switch.
  44. Carefully press the I/P cluster trim plate into the I/P lower trim panel. Fully engage all of the retainers.
  45. Install the I/P cluster trim plate screws.
  46. Tighten
    Tighten the screws to 2 N·m (18 lb in).


    Object Number: 519543  Size: SH
  47. Install the steering column. Refer to Steering Column Replacement in Steering Wheel and Column.
  48. Align the knee bolster bracket to the I/P. Install the knee bolster bracket bolts at the I/P carrier in the sequence shown.
  49. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  50. Install the bolts that secure the driver I/P knee bolster to the I/P lower trim panel.
  51. Tighten
    Tighten the bolts to 2 N·m (18 lb in).

  52. Install the knee bolster bracket screws.
  53. Tighten
    Tighten the screws to 10 N·m (89 lb in).


    Object Number: 519517  Size: SH
  54. Install the steering column filler panel. Refer to Steering Column Opening Filler Replacement .

  55. Object Number: 519316  Size: SH
  56. Position the left I/P insulator to the vehicle. Install the left I/P insulator to the stud at the accelerator pedal.
  57. Rotate the courtesy lamp clockwise in order to connect the courtesy lamp to the left I/P insulator.
  58. Install the left I/P insulator tabs to the lower I/P trim pad.
  59. Enable the SIR system. Refer to SIR Disabling and Enabling and SIR Disabling and Enabling in SIR.
  60. Connect the battery ground cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.