Bose(R) Premium Sound With Rear Audio Controls

These vehicles use wiring harness P/N 15164931.

1. Remove the key from the lock cylinder.

2. Remove the SIR fuse # 18 from the underhood electrical center.

3. Remove the windshield pillar trim from both windshield pillars.

4. Remove the upper IP closeout panel.

5. Remove both front upper IP panel speakers.

6. Disconnect the wires from both speakers. Cut the green connectors from the speaker wires as far up under the IP as possible.

7. Remove the retainers that secure the driver's seat assembly to the floor of the vehicle.

8. Disconnect the wires from the driver's seat and remove the driver's seat.

9. Disconnect the negative battery cable.

10. Remove the left rear seat cushion and the back rest assemblies.

11. Remove the jack handle tool support assembly.

12. Loosen the rear electrical center from the floor of the vehicle.

13. Separate the rear electrical center from its mounting bracket.

14. Remove the left side front and rear door opening carpet retainers and the left side first lock pillar trim.

15. Remove the six retaining screws from the console compartment bin and remove the bin.

16. Remove shift lever handle and boot assembly.

17. Remove the screws that retain the console to the floor of the vehicle.

18. Set the parking brake as firmly as possible, depress the Auto Trans Shift Lock Control solenoid plunger and shift the transmission shift lever to the L1 position.

19. Lift the console, disconned the console wiring and remove the console from the vehicle.

20. Remove the left side closeout/insulator panel (TrailBlazer only).

21. Remove the left side knee bolster (TrailBlazer only).

22. Remove the screws retaining the IP bezel to the IP and remove the bezel (TrailBlazer only).

23. Remove the screws retaining the carpet panel to the lower IP center control panel pedestal (except TrailBlazer).

24. Remove the screws that retain the IP center trim panel to the dash, loosen the trim panel, disconnect the wiring and remove the trim panel from the vehicle (except TrailBlazer).

25. Remove the radio retaining screws, pull the radio forward and disconnect all connectors.

26. Unwrap/cut the white tape on the new speaker wiring harness to spread out the wiring harness.

27. With both of the green connectors and the first breakout of four wires in hand, insert the new wiring harness from under the IP up to the radio area of the IP, where the radio is normally positioned.

28. Through the left side speaker opening, slide a piece of mechanics wire to the area of the radio.

29. Attach the green connector with the two blue wires to the mechanics wire and gently pull the wiring pigtail into the speaker opening.

30. Disconnect the mechanics wire from the speaker wires, connect the speaker wires to the speaker and fasten the speaker to the IP.

31. Repeat the last three steps for the right speaker.

32. Remove the CPA from the radio connector, remove the wires shown below from the radio connector and replace them with the wires from the new wiring harness.

^ Remove wire in cavity B9 and insert the Brown wire.

^ Remove wire in cavity B8 and insert the Brown/White wire.

^ Remove wire in cavity A10 and insert the Black wire.

^ Remove wire in cavity A11 and insert the Blue wire.

^ Reinstall the CPAs to the radio connector.

^ Cut the terminal from the wires you just removed from the connector.

33. Position the radio to the IP opening, reconnect the connectors and install the retainers.

34. Gently pull the carpet from under the right side of the shifter/console support, route the new wiring harness along and below the right side of the shifter/console support plate, place the new harness under the carpet to the area of the rear audio control, and reposition the carpeting.

35. Remove the CPA from the rear audio control connector and remove four wires from the Rear Audio Control in-line harness connector and replace them with the wires from the new harness as listed below.

^ Remove wire in cavity B3 and insert the Brown wire.

^ Remove wire in cavity A8 and insert the Brown/White wire.

^ Remove wire in cavity A9 and insert the Blue wire.

^ Remove wire in cavity A1 and insert the Black wire.

^ Replace the CPA.

^ Cut off all removed terminals and wires of the original harness, as close to the taped portion of the harness as possible.

36. While lifting the carpet in the rear door area, slide the rear electrical center through the cutout in the carpet. Continue lifting the carpet enough to gain access to the three in-line connectors located inboard of the rear electrical center.

37. Locate the 8-way connector with the purple CPA. Separate the connector and remove the CPA from the female side of the connector.

38. Route the new harness under the carpet from the rear of the console to the 8-way connector.

39. Remove the four wires from the 8-way harness connector and replace them with the wires from the new harness. DO NOT UNTWIST THE WIRES if they are twisted.

^ Remove wire in cavity A and insert the Light Blue wire.

^ Remove wire in cavity B and insert the Dark Blue wire.

^ Remove wire in cavity C and insert the Dark Green wire.

^ Remove wire in cavity D and insert the Orange wire.

40. Reinstall the CPA, reconnect the 8-way connector and reattach it to its retaining clip.

41. Reposition the rear electrical center through the carpet and reposition the carpet.

42. Reinstall the rear electrical center bracket and tighten the retainers.

Tighten

Tighten the rear electrical center retaining nuts to 10 N.m (89 lb in).

43. Reconnect the negative battery cable.

Tighten

Tighten the battery ground (negative) terminal bolt to 17 N.m (13 lb ft).

44. Insert the ignition key and turn to the RUN position. Verify radio operation. If all is in working order, proceed to the next step. Otherwise, check your work.

45. Turn the key OFF. Remove the key.

46. Reinstall the rear seat backrest and seat cushion assemblies.

Tighten

Tighten all of the rear seat back rest and seat cushion retaining nuts to 45 N.m (33 lb ft).

47. Reinstall the jack handle base (tool carrier).

Tighten

Tighten the nuts to 7 N.m (62 lb in).

48. Reinstall the rear electrical center cover.

49. Reconnect the electrical connectors to the IP trim plate, position the IP trim plate and install the retaining screws.

50. Reinstall the knee bolster (TrailBlazer).

51. Reinstall the closeout/insulator panel (TrailBlazer).

52. Reinstall the center IP carpet lower trim panel and install the screws (except TrailBlazer).

53. Reinstall the console to the vehicle and install the retainers.

54. Reinstall the shift boot and handle assembly.

55. Reinstall the console bin and retainers.

56. Reinstall the first lock pillar trim and carpet retainers to both door openings.

57. Position the driver's seat assembly in the vehicle, connect the wiring and install the retainers.

Tighten

Tighten the retaining nuts to 45 N.m (33 lb ft).

58. Install the IP upper trim panel and windshield pillar moldings.

59. Reinstall the SIR fuse #18 in the underhood electrical center and close the hood.

60. Connect the Tech 2(R) and clear codes.