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Home >> GMC >> 2004 >> Envoy 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays, Gauges And Console >> Repair Instructions >> Instrument Panel (I/P) Harness Replacement >> Installation Procedure

Installation Procedure

  1. Position the I/P harness to the vehicle.
  2. Pass the exterior portion of the I/P harness through the bulkhead.
  3. Install the I/P harness grommet to the bulkhead.
  4. Connect the I/P harness inline electrical connector (1) to the engine harness inline electrical connector.
    Fig 1: Identifying Powertrain Control Module Electrical Connector
    GM740918Courtesy of GENERAL MOTORS CORP.
  5. Connect the I/P harness electrical connector (2) to the powertrain control module.
    6. Fig 2: Identifying Ground Terminals
    GM865717Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  6. Install the grounding nut (1) 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).

  7. Install the grounding bolt (2) that retains the ground terminals to the front fender.

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

    8. Fig 3: Identifying I/P Harness Inline Electrical Connector
    GM740916Courtesy of GENERAL MOTORS CORP.
  8. Connect the I/P harness inline electrical connector to the chassis inline wiring harness.
    9. Fig 4: Identifying I/P Harness Inline Electrical Connector, Battery Positive Cable Terminal & Underhood Junction Block I/P Harness Two-Way Electrical Connectors
    GM740915Courtesy of GENERAL MOTORS CORP.
  9. Connect the 2 two-way I/P harness electrical connectors (3) to the underhood junction block base.
  10. Connect the battery positive cable terminal (2) to the underhood junction block.
  11. Install the battery cable terminal nut.

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

  12. Connect the I/P harness in line electrical connector (1) to the forward lamp harness.
    13. Fig 5: Identifying Windshield Wiper Motor Electrical Connector
    GM865716Courtesy of GENERAL MOTORS CORP.
  13. Connect the I/P harness electrical connector (1) to the windshield wiper motor.
  14. Install the I/P harness retaining clip to the plenum weld stud.
  15. Install the air inlet grille. Refer to Air Inlet Grille Panel Replacement (Envoy, TrailBlazer)Air Inlet Grille Panel Replacement (Rainier) in Wipers/Washer Systems
  16. Close the hood.
  17. Install the HVAC module assembly to the vehicle. Refer to HVAC Module Assembly Replacement in Heating Ventilation and Air Conditioning.
    18. Fig 6: Identifying Defroster, Air Conditioning, & Driver's Side Temperature Valve Electrical Connectors
    GM740906Courtesy of GENERAL MOTORS CORP.
  18. Connect the discharge air temperature electrical connector (1) to the HVAC actuator.
  19. Connect the defroster (4), air conditioning (3), and drivers side temperature valve (2) electrical connectors to the HVAC actuators.
    20. Fig 7: Identifying HVAC Discharge Air Temperature Sensor & HVAC Actuator Air Inlet Electrical Connectors
    GM740904Courtesy of GENERAL MOTORS CORP.
  20. Connect the air inlet electrical connector to the HVAC actuator.
  21. Connect the electrical connector (1) to the HVAC discharge air temperature sensor.
    22. Fig 8: Identifying Transfer Case Shift Control Module Electrical Connectors
    GM740898Courtesy of GENERAL MOTORS CORP.
  22. Connect the electrical connectors (1) to the transfer case shift control module, located near the left side of the steering wheel support bracket.
    23. Fig 9: Removing/Installing IP Wiring Harness Retaining Screws From IP Support Brackets
    GM828710Courtesy of GENERAL MOTORS CORP.
  23. Install the bolts (1) that retain the I/P wire harness to the I/P support bracket.

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

    24. Fig 10: Identifying Clutch Pedal Switch
    GM740897Courtesy of GENERAL MOTORS CORP.
  24. If equipped, connect the electrical connector to the clutch pedal switch.
    25. Fig 11: Identifying Accelerator Pedal Sensor Electrical Connector
    GM740911Courtesy of GENERAL MOTORS CORP.
  25. Connect the electrical connector (3) to the steering column.
  26. Install the steering column electrical connector bolt.

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

  27. Connect the electrical connector to the stop lamp switch (1).
  28. Connect the electrical connector (2) to the accelerator pedal sensor.
    29. Fig 12: Identifying Discharge Air Temperature Sensors & Auxiliary Blower Motor Connectors
    GM740900Courtesy of GENERAL MOTORS CORP.
  29. Connect the electrical connector (2) to the floor auxiliary blower motor.
  30. Connect the electrical connectors (1) to the discharge air temperature sensors.
  31. 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).

  32. Connect the 4-way in line electrical connector located near the SDM.
  33. Connect the 10-way in line electrical connector located near the SDM.
  34. Connect the SDM electrical connectors.
  35. Connect the park brake electrical connector (2).
    Fig 13: Identifying Park Brake Electrical Connector
    GM756021Courtesy of GENERAL MOTORS CORP.
  36. Connect the automatic transmission shift interlock electrical connector (1).
  37. Connect the SIR electrical connector (1).
  38. Attach the rosebud that retains the theft deterrent shock sensor to the I/P support bracket, if equipped.
  39. Connect the electrical connector (2) to the passenger temperature valve.
    40. Fig 14: Identifying HVAC Evaporator Blower Motor Resistor Pack Electrical Connector
    GM740910Courtesy of GENERAL MOTORS CORP.
  40. Connect the electrical connector (3) to the HVAC evaporator blower motor resister pack.
  41. Install the HVAC support bracket to the I/P substrate. Refer to Instrument Panel (I/P) Carrier Replacement .
  42. If replacing the I/P harness on a TrailBlazer, Envoy or Bravada, install the I/P harness electrical connectors to the cellular communication module. Refer to Communication Interface Module Replacement (TrailBlazer, Envoy, Bravada)Communication Interface Module Replacement (TrailBlazer EXT, Envoy XL) in Cellular Communications.
    43. Fig 15: Identifying Inline I/P Harness To Body Wiring Harness Connection
    GM740902Courtesy of GENERAL MOTORS CORP.
  43. Connect the inline body electrical connector from the body wiring harness electrical connector.
    44. Fig 16: Identifying Inline I/P Wire Harness To Body Harness Electrical Connectors (TrailBlazer EXT or Envoy XL)
    GM828713Courtesy of GENERAL MOTORS CORP.
  44. If replacing the I/P harness on a TrailBlazer EXT or Envoy XL, connect the two inline I/P wire harness electrical connectors to the body harness.
  45. Pass the I/P wire harnesses through the rear carpet in order to install the I/P harness to the rear electrical center.
  46. Install the rear carpet. Refer to Carpet Replacement - Rear (TrailBlazer, Envoy, Bravada) or Carpet Replacement - Rear (TrailBlazer EXT, Envoy XL) or Carpet Replacement - Rear (Envoy XUV) in Interior Trim.
  47. Install the I/P harness to the rear electrical center. Refer to Rear Electrical Center or Junction Block Replacement in Wiring Systems.
  48. Install the I/P. Refer to Instrument Panel (I/P) Assembly Replacement .
  49. Install the center console. Refer to Console Replacement .
  50. If replacing the I/P 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.
  51. If replacing the I/P harness on TrailBlazer EXT or Envoy XL, install the second row seats. Refer to Seat Replacement - Rear No. 1 (TrailBlazer EXT, Envoy XL, Envoy XUV) in Seats
  52. Install the front seats. Refer to Seat Replacement - Front Bucket in Seats.
  53. Enable the SIR. Refer toSIR Disabling and Enabling Zone 3 and to SIR Disabling and Enabling Zone 5 in SIR.
  54. Connect the negative battery cable. Refer to Battery Negative Cable Replacement (4.2L Engine) or Battery Negative Cable Replacement (5.3L Engine) in Engine Electrical.
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