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Popping, Snapping or Creaking Noise from C-Pillar/Roof Area (Reposition Sheet Metal Behind C-Pillar)

Subject:Popping, Snapping or Creaking Noise From C-Pillar/Roof Area (Reposition Sheet Metal Behind C-Pillar )

Models:2002-2005 Chevrolet TrailBlazer EXT
2002-2005 GMC Envoy XL
Built Prior to VIN Breakpoint 56196444



Condition

Some customers may comment on a noise in the roof area behind the rear doors when driving or making parking lot maneuvers.

Cause

This may be caused by two pieces of metal making contact in the C-pillar area.

Correction

Reposition the sheet metal following the procedure below.

  1. Remove the left and right windshield garnish molding. If necessary, refer to Garnish Molding Replacement-Windshield Pillar in SI.
  2. Remove the roof console. If necessary, refer to Console Replacement-Overhead in SI.
  3. Disconnect the electrical connector to the mirror and the rain sensor.
  4. Disconnect the coax cable from the navigational antenna if equipped.
  5. Remove the DVD player if equipped. If necessary, refer to Video Display Replacement in SI.
  6. Remove the left side and right side sunshade. If necessary, refer to Sunshade Replacement.
  7. Remove the upper half of the left and right B-pillar garnish molding.
  8. Remove the left and right C-pillar garnish molding. If necessary, refer to Garnish Molding Replacement Body Side Window-Front in SI.
  9. Remove the left and right D-pillar garnish molding. If necessary, refer to Garnish Molding Replacement-Body Side Window Rear in SI.
  10. Unplug the electrical connector for the side window power motor and the harness from the D-pillar.
  11. If equipped with rear A/C, remove the 3rd row seat. Refer to Seal Replacement in SI. if not equipped with A/C, proceed to step 13.
  12. Remove the lift gate sill plate. If necessary, refer to Door Sill Plate Replacement-Liftgate.
  13. Remove the right quarter panel trim.
  14. Remove the A/C duct.
  15. Remove the assist handle. If necessary, refer to Assist Handle Replacement in SI.
  16. Fold the seat down to give room for the headliner when dropping.
  17. Remove the weatherstrip half way down the door opening.
  18. With the aid of an assistant, remove the two push pins and lower the headliner. Place the front of the headliner on the top of the dash. This will give more room in the rear of the truck.

  19. Object Number: 1793026  Size: SH
  20. The illustration above shows where the sheet metal is making contact.

  21. Object Number: 1793027  Size: SH

    Object Number: 1793028  Size: SH
  22. With a pry bar, reposition the sheet metal 10 mm (3/8 in) to eliminate the noise on the left or right side as seen in the illustration above.
  23. Install the headliner with the aid of an assist and install the two push pins in the headliner.
  24. Install the headliner wire harness to the left C-pillar.
  25. Install the roof console. If necessary, refer to Console Replacement-Overhead in SI.
  26. Install the left and right sun shade. If necessary, refer to Sunshade Replacement.
  27. Reconnect the coax cable for the navigational antenna if equipped.
  28. Reconnect the electrical connector to the mirror and the rain sensor.
  29. Install the left side and right side windshield garnish molding. If necessary, refer to Garnish Molding Replacement Windshield in SI.
  30. Install the upper half of the left side and right side B-pillar garnish molding.
  31. Install the A/C duct.
  32. Install the right quarter panel trim.
  33. Install the left side and right side C-pillar garnish molding. If necessary, refer to Garnish Molding Replacement Body Side Front Window in SI.
  34. Install the left side and right side D-pillar garnish molding. If necessary, refer to Garnish Molding Replacement-Body Side Window Rear in SI.
  35. Install the lift gate sill plate.
  36. Install all the four door weatherstrip and the lift gate weatherstrip.
  37. Install the assist handle.
  38. Install the DVD player, if equipped. If necessary, refer to Video Display Replacement in SI.
  39. Install the 3rd row seat. If necessary, refer to Seat Replacement-Rear in SI.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation

Description

Labor Time

*C9750

Reposition Sheet Metal

1.5 hrs

*This labor operation is for bulletin use only. It will not be published in the Labor Time Guide.