GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 Caprice WM 🢒 Engine 🢒 Engine Mechanical - 2.8L, 3.0L, 3.2L, or 3.6L 🢒 Engine Wiring Harness Assembly Installation

    Object Number: 1958760 Size: SH

    Important: Attach the engine wiring harness bracket (2) to the locating clip lug on the left bank camshaft cover (3) to avoid an induced rattle condition.

  1. Attach the engine wiring harness bracket (2) to the left bank camshaft cover (3).
  2. Connect the throttle position sensor electrical connector (1).

    3. Important: LE0 and LW2 engines only have intake camshaft position actuator solenoids.

  3. Connect the left bank intake and exhaust camshaft position actuator solenoid electrical connectors (5).
  4. Connect the left camshaft position sensors electrical connectors (4).

    5. Object Number: 1958758 Size: SH
  5. Install the power steering fluid reservoir bracket (1).
  6. Install the power steering fluid reservoir bracket to engine front cover retaining bolts (2).

    7. Tighten
    Tighten the bolts to 9 N·m (80 lb in).


    Object Number: 1958716 Size: SH

    Important: Make sure the power steering reservoir (1) and the the locking tang on the power steering reservoir bracket  (2) are engaged to avoid an induced rattle condition.

  7. Install the power steering fluid reservoir to the power steering fluid reservoir bracket.

    8. Object Number: 1957863 Size: SH
  8. Connect the A/C compressor electrical connector (1).

    9. Object Number: 1957879 Size: SH
  9. Connect the A/C pressure transducer electrical connector (1).

    10. Object Number: 1958755 Size: SH
  10. Attach the engine wiring harness to cylinder block retaining lug (3).
  11. Connect the oil level sensor electrical connector (2).
  12. Connect the left bank knock sensor electrical connector (1).

    13. Object Number: 1958752 Size: SH
  13. Install the battery cable harness to starter motor retaining nut (1).

    14. Tighten
    Tighten the nut to 20 N·m (14 lb ft).

  14. Connect the battery cable harness (2) to the starter motor (3).

    15. Object Number: 1958744 Size: SH
  15. Connect the starter motor electrical connector (1).

    16. Object Number: 1958745 Size: SH

    Important: Attach the engine wiring harness (1) clips to the right bank camshaft cover clips (4) and lugs (3) to avoid an induced rattle condition.

  16. Attach the engine wiring harness bracket (1) to the right bank camshaft cover lugs (3).
  17. Connect the oil pressure sensor electrical connector (7).
  18. Connect the coolant temperature sensor electrical connector (6).
  19. Install the engine wiring harness ground and engine wiring harness ground to left bank cylinder head retaining bolt (5).

    20. Tighten
    Tighten the bolt to 10 N·m (89 lb in).

  20. Connect the left bank ignition coil electrical connectors (2).

    21. Object Number: 1958742 Size: SH
  21. Install the engine cover bracket (1). 
  22. Install the engine cover bracket to cylinder head retaining bolt (2). 

    23. Tighten
    Tighten the bolt to 35 N·m (26 lb ft).


    Object Number: 1958741 Size: SH
  23. Connect the purge solenoid electrical connector (3).
  24. Connect the injector harness electrical connector (2).
  25. Connect the Intake Manifold Runner Control (IMRC) electrical connector (1).

    26. Object Number: 1958739 Size: SH
  26. Install the engine wiring harness bracket to cylinder head rear retaining bolts (1). 

    27. Tighten
    Tighten the nut to 40 N·m (30 lb ft).


    Object Number: 1958738 Size: SH
  27. Attach the left hand Heated Oxygen Sensor 1 electrical harness (1) to the engine wiring harness bracket (2).
  28. Connect the left hand Heated Oxygen Sensor 1 electrical connector (3).

    29. Object Number: 1958736 Size: SH

    Important: This step and graphic refer to the 6 speed manual transmission only.

  29. Connect the right hand Heated Oxygen Sensor 1 electrical connector (1).
  30. Connect the reverse switch assembly electrical connector (2).

    31. Object Number: 1958735 Size: SH

    Important: This step and graphic refer to the 5 speed automatic transmission only

  31. Connect the right hand Heated Oxygen Sensor 1 electrical connector (1).
  32. Connect the main transmission electrical connector (2).

    33. Object Number: 1958733 Size: SH

    Important: This step and graphic refer to the 4 speed automatic transmission only

  33. Connect the right hand Heated Oxygen Sensor 1 electrical connector (2).
  34. Connect the main transmission electrical connector (3).
  35. Connect the vehicle speed sensor electrical connector (4)
  36. Connect the park/neutral switch electrical connector (1).

    37. Object Number: 1958732 Size: SH

    Important: Attach the engine wiring harness (1) clips to the right bank camshaft cover (4) to avoid an induced rattle condition.

  37. Attach the engine wiring harness (1) to the right bank camshaft cover (3).
  38. Install the engine wiring harness ground to right bank cylinder head rear retaining bolt (4).

    39. Tighten
    Tighten the bolt to 10 N·m (89 lb in).

  39. Connect the right bank ignition coil electrical connectors (2).

    40. Object Number: 1958730 Size: SH
  40. Connect the crankshaft position sensor electrical connector (1).
  41. Connect the right bank knock sensor electrical connector (2).
  42. Install the alternator and mounting bracket. Refer to Generator Installation .

    43. Object Number: 1958728 Size: SH
  43. Connect the alternator battery harness connector (3).
  44. Connect the battery positive cable (4) from the alternator (2).
  45. Install the battery positive cable to alternator retaining nut (1).

    46. Tighten
    Tighten the nut to 13 N·m (115 lb in).


    Object Number: 1958725 Size: SH
  46. Install the engine wiring harness bracket to cylinder block retaining bolt (3).

    47. Tighten
    Tighten the nut to 10 N·m (89 lb in).

  47. Install the engine wiring harness bracket to right bank cylinder head retaining bolt (2).

    48. Tighten
    Tighten the nut to 10 N·m (89 lb in).

  48. Install the engine wiring harness ground to right bank cylinder head front retaining bolt (1).

    49. Tighten
    Tighten the nut to 10 N·m (89 lb in).


    Object Number: 1958724 Size: SH

    Important: Attach the engine wiring harness bracket (2) to the locating clip lug on the right bank camshaft cover (4) to avoid an induced rattle condition.

  49. Attach the engine wiring harness bracket (2) from the right bank camshaft cover (4).
  50. Attach the engine wiring harness to cylinder head retaining lug (3).

    51. Important: LE0 and LW2 engines only have intake camshaft position actuator solenoids.

  51. Connect the right bank intake and exhaust camshaft position actuator solenoid electrical connectors (5).
  52. Connect the right camshaft position sensors electrical connectors (1).
  53. Install the engine covers. Refer to Engine Cover Replacement .