GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 GMC Sierra Denali 🢒 Engine 🢒 Engine Electrical 🢒 Turbocharger Exhaust Pipe Replacement

Removal Procedure

    Object Number: 1684757 Size: SH
  1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Loosen the catalytic converter coupling nuts (1).

    3. Object Number: 1684756 Size: SH
  3. Loosen the exhaust pipe clamp.
  4. Slide the exhaust pipe clamp up onto the exhaust pipe.
  5. Slide the catalytic converter hanger out from the insulator.

    6. Object Number: 1684758 Size: SH
  6. Gently pry up the catalytic converter coupling clip (1) (on the muffler end) in order to disengage the locator button (3) from the coupling clip.
  7. Remove the catalytic converter.

    8. Object Number: 702776 Size: SH
  8. If equipped with an automatic transmission, remove the transmission fluid fill tube to bellhousing nuts.
  9. Position the transmission fluid fill tube to the right side of the vehicle. The tube does not require removal from the transmission.
  10. Lower the vehicle.

    11. Object Number: 310799 Size: SH
  11. Move the hood to the service position by moving the hood hinge bolts (1) to the service position (2).
  12. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .

    13. Object Number: 1335576 Size: SH
  13. Remove the turbocharger upper heat shield bolts.
  14. Remove the turbocharger upper heat shield.

    15. Object Number: 1334821 Size: SH
  15. Remove the exhaust outlet heat shield bolts.
  16. Remove the exhaust outlet heat shield.
  17. Remove the exhaust outlet to right exhaust pipe bracket bolt.

    18. Object Number: 1334826 Size: SH
  18. Loosen the exhaust outlet pipe clamp.

    19. Object Number: 1341232 Size: SH
  19. Remove the exhaust outlet pipe.

Installation Procedure

    Object Number: 1341232 Size: SH
  1. Install the exhaust outlet pipe.

    2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1334826 Size: SH
  2. Tighten the exhaust outlet pipe clamp.

    3. Tighten
    Tighten the clamp to 15 N·m (11 lb ft).


    Object Number: 1334821 Size: SH
  3. Install the exhaust outlet to right exhaust pipe bracket bolt.

    4. Tighten
    Tighten the bolt to 34 N·m (25 lb ft).

  4. Install the exhaust outlet heat shield.
  5. Install the exhaust outlet heat shield bolts.

    6. Tighten
    Tighten the bolts to 8 N·m (71 lb in).


    Object Number: 1335576 Size: SH
  6. Install the turbocharger upper heat shield.
  7. Install the turbocharger upper heat shield bolts.

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

  8. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .

    9. Object Number: 310799 Size: SH
  9. Remove the hood hinge bolts (1) from the service position (2) and position the hood in the normal position.

    10. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).

  10. Raise the vehicle.

    11. Object Number: 702776 Size: SH
  11. If equipped with an automatic transmission, position the transmission fluid fill tube to the studs.
  12. Install the transmission fluid fill tube to bellhousing nuts.

    13. Tighten
    Tighten the nuts to 18 N·m (13 lb ft).


    Object Number: 1684758 Size: SH
  13. Position the catalytic converter.
  14. Align the catalytic converter coupling groove (2) to the muffler locator button (3).
  15. Install the catalytic converter until the muffler locator button is fully engaged by the coupling clip (1).

    16. Object Number: 1684756 Size: SH
  16. Slide the catalytic converter hanger into the insulator.
  17. Slide the exhaust pipe clamp down.
  18. Tighten the exhaust pipe clamp.

    19. Tighten
    Tighten the clamp to 15 N·m (11 lb ft).


    Object Number: 1684757 Size: SH
  19. Tighten both catalytic converter coupling nuts (1) until snug.
  20. Once snug, tighten the catalytic converter coupling nuts to specifications.

    21. Tighten
    Tighten the nuts to 45 N·m (33 lb ft).

  21. Lower the vehicle.