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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1162 (Engine Mechanical - 3.6L (6 Of 6)) >> Off-Vehicle R EPAIR Instructions (4 Of 4) >> Intake Manifold Installation (LLT)

Intake Manifold Installation (LLT)

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Intake Manifold Gasket
    GM1977858Courtesy of GENERAL MOTORS CORP.
  1. Install the NEW intake manifold gasket.
    2. Fig 2: Identifying Intake Manifold Assembly
    GM1977856Courtesy of GENERAL MOTORS CORP.
  2. Install the intake manifold assembly.
  3. Install the intake manifold bolts.
    4. Fig 3: View of Tightening Sequence of Intake Manifold Bolts
    GM1992546Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  4. Tighten the intake manifold bolts in the sequence shown.

    Tighten: 

    1. Tighten the intake manifold bolts in sequence to 23 N.m (17 lb ft).
    2. Tighten the intake manifold bolts a second pass in sequence to 23 N.m (17 lb ft).

    5. Fig 4: Identifying Intake Manifold Brace and Front Cover
    GM1977839Courtesy of GENERAL MOTORS CORP.
  5. Place the intake manifold brace to the engine front cover and intake manifold.
  6. Loosely install the bolts.
  7. First tighten the intake manifold brace bolt (1) to the intake manifold.

    Tighten:  Tighten the intake manifold brace bolt at the intake manifold to 10 N.m (89 lb in).

  8. Finally tighten the intake manifold brace bolt (2) to the engine front cover.

    Tighten:  Tighten the intake manifold brace bolt to the engine front cover to 65 N.m (48 lb ft).

    9. Fig 5: Identifying Evaporative Solenoid
    GM1977854Courtesy of GENERAL MOTORS CORP.
  9. Install the evaporative (EVAP) solenoid.
  10. Install the EVAP solenoid bolt.

    Tighten:  Tighten the EVAP solenoid bolt to 10 N.m (89 lb in).

    11. Fig 6: View of EVAP Hose and Intake Manifold
    GM1977851Courtesy of GENERAL MOTORS CORP.
  11. Connect the EVAP hose to the upper intake manifold and EVAP solenoid.
    12. Fig 7: Identifying Crankcase Ventilation Tube Assembly
    GM1977846Courtesy of GENERAL MOTORS CORP.
  12. Connect the positive crankcase ventilation (PCV) tube assembly to the upper intake manifold and the right camshaft cover.
  13. Install the PCV tube assembly bracket bolts.

    Tighten:  Tighten the PCV tube assembly bracket bolts to 10 N.m (89 lb in).

    14. Fig 8: View of Booster Hose on Intake Manifold
    GM1977836Courtesy of GENERAL MOTORS CORP.
  14. Install the brake booster hose to the upper intake manifold.
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