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Home >> Buick >> 2016 >> Cascada Base >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Repair Instructions >> Engine Control Module Wiring Harness Replacement >> Installation Procedure
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Installation Procedure

  1. Install the engine control module wiring harness to the vehicle.
  2. Raise the vehicle.
    3. Fig 1: AC Compressor Wiring Harness Plugs
    GM2888749Courtesy of GENERAL MOTORS COMPANY
  3. Connect the 2 AC compressor wiring harness plugs (1, 2).
    4. Fig 2: Harness Plugs And Retainers
    GM2888748Courtesy of GENERAL MOTORS COMPANY
  4. Clip in the 5 wiring harness retainers (4).
  5. Connect the heater inlet pump wiring harness plug (1).
  6. Connect the engine oil level sensor wiring harness plug (9).
  7. Connect the crankshaft position sensor wiring harness plug (10).
  8. Connect the starter wiring harness plug (8).
  9. Connect the generator wiring harness plug (6).
  10. Connect the heated oxygen sensor wiring harness plug (4).
  11. Connect the oil pump flow wiring harness plug (5).
  12. Connect the knock sensor wiring harness plug (3).
  13. Connect the charge air bypass valve wiring harness plug (2).
  14. Lower the vehicle.
    15. Fig 3: Harness Plugs And Retainers
    GM2888747Courtesy of GENERAL MOTORS COMPANY
  15. Clip in the 4 wiring harness retainers (1, 5).
  16. Connect the engine coolant thermostat wiring harness plug (4).
  17. Connect the turbocharger wastegate regulator solenoid valve wiring harness plug (3).
  18. Connect the exhaust camshaft position actuator solenoid valve wiring harness plug (2).
  19. Install the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct Replacement .
    20. Fig 4: Mass Air Flow Sensor Wiring Harness Plug And Retainers
    GM2888746Courtesy of GENERAL MOTORS COMPANY
  20. Clip in the 3 wiring harness retainers (2).
  21. Connect the mass air flow sensor wiring harness plug (1).
    22. Fig 5: Wiring Harness PlugsAnd Retainers
    GM2888736Courtesy of GENERAL MOTORS COMPANY
  22. Clip in the 3 wiring harness retainers (2, 4).
  23. Connect the evaporative emission canister purge solenoid valve wiring harness plug (1).
  24. Connect the intake camshaft actuator solenoid valve wiring harness plug (5).
  25. Connect the engine oil pressure wiring harness plug (3).
    26. Fig 6: Ignition Coil Wiring Harness Plugs And Retainers
    GM2888735Courtesy of GENERAL MOTORS COMPANY
  26. Clip in the 2 wiring harness retainers (1).
  27. Connect the 4 ignition coil wiring harness plugs (2).
    28. Fig 7: Harness Plugs And Retainers
    GM2888734Courtesy of GENERAL MOTORS COMPANY
  28. Clip in the 3 wiring harness retainers (2, 4).
  29. Connect the throttle body wiring harness plug (3).
  30. Connect the intake air pressure/temperature sensor wiring harness plug (1).
  31. Connect the fuel pump wiring harness plug (5).
    32. Fig 8: Harness Plugs And Ground Cable
    GM2888733Courtesy of GENERAL MOTORS COMPANY
  32. Clip in the 2 wiring harness retainers (2, 4).
    33. CAUTION:

    Refer to Fastener Caution .

  33. Install the engine wiring harness ground cable (7) and the ground cable bolt (8). Tighten the bolt to 9 N.m (80 lb in).
  34. Connect the engine coolant temperature wiring harness plug (6).
  35. Connect the intake camshaft position sensor wiring harness plug (5).
  36. Connect the exhaust camshaft position sensor wiring harness plug (1).
  37. Connect the fuel injection wiring harness plug (3).
    38. Fig 9: Coolant Hose At Charge Air Cooler Outlet Air Hose Retainer
    GM2888732Courtesy of GENERAL MOTORS COMPANY
  38. Install the charge air cooler outlet air hose (2) to the throttle body adapter.
  39. Fix the clamp (1).
  40. Clip in the coolant hose (3) to the charge air cooler outlet air hose retainer.
    41. Fig 10: Transmission Control Module Wiring Harness Plug And Retainer
    GM2888731Courtesy of GENERAL MOTORS COMPANY
  41. For automatic transmission, connect the transmission control module wiring harness plug (2).
  42. Clip in the wiring harness retainer (1).
    43. Fig 11: Harness Plugs And Retainers
    GM2888730Courtesy of GENERAL MOTORS COMPANY
  43. For manual transmission, connect the backup lamp switch wiring harness plug (3).
  44. If equipped for manual transmission, connect the neutral gear sensor wiring harness plug (2).
  45. Clip in the 2 wiring harness retainers (1).
    46. Fig 12: Wiring Harness Ground Cable
    GM2506210Courtesy of GENERAL MOTORS COMPANY
  46. Connect the wiring harness connection adapter plug (4).
  47. Install the wiring harness plug (1) to the front compartment fuse block housing.
  48. Install the wiring harness ground cable (3) and install the wiring harness ground cable nut (2) and tighten to 9 N.m (80 lb in).
  49. Install the front compartment fuse block. Refer to Front Compartment Fuse Block Replacement .
  50. Install the battery tray. Refer to Battery Tray Replacement .
    51. Fig 13: Engine Control Module And Heated Oxygen Wiring Harness Plugs
    GM2888716Courtesy of GENERAL MOTORS COMPANY
  51. Clip in the 2 wiring harness retainers (3).
  52. Connect the 3 heated oxygen sensor wiring harness plugs (2) and clip in the wiring harness plug to the bracket.
  53. Connect the 3 engine control module wiring harness plugs (2).
  54. Install the engine sight shield. Refer to Engine Sight Shield Replacement .
  55. Connect the battery negative cable. Battery Negative Cable Disconnection and Connection .
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