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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX BASEREPAIR AND DIAGNOSISENGINE MECHANICALENGINE EXHAUST SYSTEMREPAIR INSTRUCTIONSEXHAUST MANIFOLD REPLACEMENT - LEFT SIDE (L26)INSTALLATION PROCEDURE
2008 Pontiac Grand Prix Base

Installation Procedure

2008 Pontiac Grand Prix BaseSECTION Installation Procedure
    Fig 1: View Of Exhaust Manifold Components
    GM97756Courtesy of GENERAL MOTORS CORP.
  1. Install the new exhaust manifold gasket.
  2. Install the exhaust manifold.
    3. NOTE: Refer to Fastener Notice .
  3. Install the exhaust manifold bolts and the nuts.

    Tighten:  Tighten the bolts and the nuts to 30 N.m (22 lb ft).

    4. Fig 2: View Of Exhaust Manifold Heat Shield
    GM153578Courtesy of GENERAL MOTORS CORP.
  4. Install the exhaust manifold heat shield.
  5. Install the exhaust manifold heat shield nuts.

    Tighten:  Tighten the nuts to 20 N.m (15 lb ft).

    6. Fig 3: Left Engine Lift Bracket
    GM153577Courtesy of GENERAL MOTORS CORP.
  6. Install the engine lift bracket.
  7. Install the engine lift bracket bolt and the nut.

    Tighten:  Tighten the bolt and the nut to 30 N.m (22 lb ft).

  8. Install the oil level indicator tube. Refer to Oil Level Indicator and Tube Replacement .
  9. Install the left spark plugs to cylinders 1, 3 and 5. Refer to Spark Plug Replacement .
    10. Fig 4: View Of Exhaust Crossover Pipe
    GM153576Courtesy of GENERAL MOTORS CORP.
  10. Install the exhaust crossover bolts to the left exhaust manifold.

    Tighten:  Tighten the bolts to 20 N.m (15 lb ft).

  11. Install the lower right engine mount strut bracket. Refer to Engine Mount Strut Bracket Replacement - Right Side .
  12. Install the engine mount struts. Refer to Engine Mount Strut Replacement - Right Side and Engine Mount Strut Replacement - Left Side .
  13. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
  14. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (L26) or Battery Negative Cable Disconnection and Connection (LS4) .
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.