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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1570 (Instrument Panel, Gauges & Console) >> Repair Instructions >> Instrument Panel (I/P) Harness Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Position the IP harness to the vehicle.
  2. Pass the exterior portion of the IP harness through the bulkhead.
  3. Install the IP harness grommet to the bulkhead.
  4. Connect the IP harness inline electrical connector (1) to the engine harness inline electrical connector.
    5. Fig 1: Disconnecting/Connecting Power Control Module IP Harness Electrical Connector
    GM740918Courtesy of GENERAL MOTORS CORP.
  5. Connect the IP harness electrical connector (2) to the powertrain control module.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  6. Install the grounding nut (2) that retains the ground terminals to the weld stud located on the front plenum.

    Tighten:  Tighten the nut to 10 N.m (88 lb in).

    Fig 2: Removing/Installing Ground Terminal Retaining Nuts
    GM740913Courtesy of GENERAL MOTORS CORP.
  7. Install the grounding bolt (3) that retains the ground terminals to the front fender.

    Tighten:  Tighten the bolt to 10 N.m (88 lb in).

  8. Install the grounding bolt (1) that retains the ground terminal to the hood.

    Tighten:  Tighten the bolt to 10 N.m (88 lb in).

  9. Connect the IP harness inline electrical connector to the chassis inline wiring harness.
    Fig 3: Identifying Chassis Inline Wiring Harness
    GM740916Courtesy of GENERAL MOTORS CORP.
  10. Connect the 2 two-way IP harness electrical connectors (3) to the underhood junction block base.
    Fig 4: Disconnecting/Connecting Underhood Junction Block Base Electrical Connectors
    GM740915Courtesy of GENERAL MOTORS CORP.
  11. Connect the battery positive cable terminal (2) to the underhood junction block.
  12. Install the battery cable terminal nut.

    Tighten:  Tighten the nut to 10 N.m (88 lb in).

  13. Connect the IP harness in line electrical connector (1) to the forward lamp harness.
  14. Connect the IP harness electrical connector (1) to the underhood lamp harness.
    Fig 5: Disconnecting/Connecting Windshield Wiper Motor & Underhood Lamp Electrical Connectors
    GM740912Courtesy of GENERAL MOTORS CORP.
  15. Install the clip that retains the IP harness to the hood hinge.
  16. Connect the IP harness electrical connector (2) to the windshield wiper motor.
  17. Install the IP harness retaining clip to the plenum weld stud.
  18. Install the air inlet grille. Refer to AIR INLET GRILLE PANEL REPLACEMENT (ENVOY, TRAILBLAZER) .
  19. Close the hood.
  20. Install the HVAC module assembly to the vehicle. Refer to HVAC MODULE ASSEMBLY REPLACEMENT in Heating Ventilation and Air Conditioning.
  21. Connect the discharge air temperature electrical connector (1) to the HVAC actuator.
    Fig 6: Disconnecting/Connecting Discharge Air Temperature Electrical Connector
    GM740906Courtesy of GENERAL MOTORS CORP.
  22. Connect the defroster (4), air conditioning (3), and drivers side temperature valve (2) electrical connectors to the HVAC actuators.
  23. Connect the air inlet electrical connector to the HVAC actuator.
  24. Connect the electrical connector (1) to the HVAC discharge air temperature sensor.
    Fig 7: Disconnecting/Connecting HVAC Discharge Air Temperature Sensor Electrical Connectors
    GM740904Courtesy of GENERAL MOTORS CORP.
  25. Connect the electrical connectors (2) to the transfer case shift control module, located near the left side of the steering wheel support bracket.
    Fig 8: Disconnecting/Connecting Transfer Case Shift Control Module Electrical Connectors
    GM740898Courtesy of GENERAL MOTORS CORP.
  26. Install the bolts (1) that retain the IP wire harness to the IP support bracket.

    Tighten:  Tighten the bolts to 2.5 N.m (22 lb in).

    Fig 9: Locating IP Wiring Harness To IP Support Brackets Mounting Bolts
    GM828710Courtesy of GENERAL MOTORS CORP.
  27. If equipped, connect the electrical connector to the clutch pedal switch.
    Fig 10: View Of Clutch Pedal Switch Electrical Connector
    GM740897Courtesy of GENERAL MOTORS CORP.
  28. Connect the electrical connector (3) to the steering column.
  29. Install the steering column electrical connector bolt.

    Tighten:  Tighten the bolt to 6 N.m (53 lb in).

  30. Connect the electrical connector to the stop lamp switch (1).
  31. Connect the electrical connector (2) to the accelerator pedal sensor.
    Fig 11: Disconnecting/Connecting Accelerator Pedal Sensor Electrical Connector
    GM740911Courtesy of GENERAL MOTORS CORP.
  32. Connect the electrical connector (2) to the floor auxiliary blower motor.
  33. Connect the electrical connectors (1) to the discharge air temperature sensors.
    Fig 12: Disconnecting/Connecting Discharge Air Temperature Sensors Electrical Connectors
    GM740900Courtesy of GENERAL MOTORS CORP.
  34. Install the splice pack retaining bolt located at the front of the shift lever bracket.

    Tighten:  Tighten the bolt to 10 N.m (88 lb in).

  35. Connect the headliner harness electrical connector (1) and diversity antenna coax cable connector (2) located near the HVAC evaporator blower motor.
    Fig 13: View Of Radio Antenna Cable To Radio Extension Cable
    GM734416Courtesy of GENERAL MOTORS CORP.
  36. Connect the 4-way in line electrical connector located near the SDM.
  37. Connect the 10-way in line electrical connector located near the SDM.
  38. Connect the SDM electrical connectors.
  39. Connect the park brake electrical connector (2).
    Fig 14: Disconnecting/Connecting Park Brake & A/T Shift Interlock Electrical Connectors
    GM756021Courtesy of GENERAL MOTORS CORP.
  40. Connect the automatic transmission shift interlock electrical connector (1).
  41. Connect the SIR electrical connector (1).
  42. Attach the rosebud that retains the theft deterrent shock sensor to the IP support bracket, if equipped.
  43. Connect the electrical connector (2) to the passenger temperature valve.
  44. Connect the electrical connector (3) to the HVAC evaporator blower motor resister pack.
    Fig 15: Disconnecting/Connecting HVAC Evaporator Blower Motor Resister Pack Electrical Connectors
    GM740910Courtesy of GENERAL MOTORS CORP.
  45. Install the HVAC support bracket to the IP substrate. Refer to Instrument Panel (I/P) Carrier Replacement .
  46. If replacing the IP harness on a TrailBlazer, Envoy or Bravada, install the IP harness electrical connectors to the cellular communication module. Refer to COMMUNICATION INTERFACE MODULE REPLACEMENT (TRAILBLAZER, ENVOY, BRAVADA) or COMMUNICATION INTERFACE MODULE REPLACEMENT (TRAILBLAZER EXT, ENVOY XL) in Cellular Communications.
  47. Connect the inline body electrical connector from the body wiring harness electrical connector.
    Fig 16: Disconnecting/Connecting Inline IP Harness Electrical Connectors
    GM740902Courtesy of GENERAL MOTORS CORP.
  48. If replacing the IP harness on a TrailBlazer EXT or Envoy XL, connect the two inline IP wire harness electrical connectors to the body harness.
    Fig 17: Locating Inline IP Wire Harness Electrical Connectors
    GM828713Courtesy of GENERAL MOTORS CORP.
  49. Pass the IP wire harnesses through the rear carpet in order to install the IP harness to the rear electrical center.
  50. Install the rear carpet. Refer to CARPET REPLACEMENT - REAR (TRAILBLAZER, ENVOY, BRAVADA) or CARPET REPLACEMENT - REAR (TRAILBLAZER EXT, ENVOY XL) in Interior Trim.
  51. Install the IP harness to the rear electrical center. Refer to REAR ELECTRICAL CENTER OR JUNCTION BLOCK REPLACEMENT in Wiring Systems.
  52. Install the IP. Refer to Instrument Panel (I/P) Assembly Replacement .
  53. Install the center console. Refer to Console Replacement .
  54. If replacing the IP harness on a TrailBlazer, Envoy or Bravada, install the rear seat cushions. Refer to SEAT CUSHION REPLACEMENT - REAR NO. 1 (TRAILBLAZER, ENVOY, BRAVADA) in Seats.
  55. If replacing the IP harness on TrailBlazer EXT or Envoy XL, install the second row seats. Refer to SEAT REPLACEMENT - REAR NO. 1 (TRAILBLAZER EXT, ENVOY XL) in Seats
  56. Install the front seats. Refer to SEAT REPLACEMENT - FRONT BUCKET in Seats.
  57. Enable the SIR. Refer to ACTIVATING SYSTEM in SIR.
  58. Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE .
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