GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Corvette 🢒 Engine 🢒 Engine Exhaust 🢒 Catalytic Converter Replacement - Left Side

Catalytic Converter Replacement - Left Side 6.0L

Removal Procedure

    Object Number: 1461906 Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Remove the intermediate pipe. Refer to Intermediate Pipe Replacement.
  3. Remove the oxygen sensors . Refer to the following:
    4. •  Heated Oxygen Sensor Replacement - Bank 1 Sensor 1
    •  Heated Oxygen Sensor Replacement - Bank 1 Sensor 2

    Important: DO NOT reuse the gasket between the catalytic convertor and the exhaust manifold. Use new only.

  4. Remove the mounting nuts (3) and gasket (1) from the exhaust manifold.
  5. Remove the catalytic convertor (2) from the vehicle.

Installation Procedure

    Object Number: 1461906 Size: SH
  1. Install the NEW exhaust gasket (1) on the catalytic convertor (2).
  2. Position the catalytic convertor (2) on the exhaust manifold.

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

  3. Install the mounting nuts (3) for the catalytic convertor (2).

    4. Tighten
    Tighten the mounting nuts to 20 N·m (15 lb ft).

  4. Install the oxygen sensors . Refer to the following:
    5. •  Heated Oxygen Sensor Replacement - Bank 1 Sensor 1
    •  Heated Oxygen Sensor Replacement - Bank 1 Sensor 2
  5. Install the intermediate pipe. Refer to Intermediate Pipe Replacement.
  6. Lower the vehicle.

Catalytic Converter Replacement - Left Side 7.0L


Object Number: 1707532 Size: MF

Callout

Component Name

Preliminary Procedure

  1. Remove the engine mount-to-engine mount bracket nuts. Refer to Engine Mount Replacement - Left Side and Engine Mount Replacement - Right Side .
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle .

1

Intermediate Pipe

Refer to Intermediate Pipe Replacement .

2

Exhaust Pipe Seal

3

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1

Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 .

4

Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2

Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 .

5

Catalytic Converter-to-Exhaust Manifold Nut (Qty: 4)

Notice: Refer to Fastener Notice in the Preface section.

Tighten
50 N·m (37 lb ft)

6

Left Side Catalytic Converter

Tip
The engine will need to be raised for the catalytic converter to clear the exhaust manifold mounting studs.

7

Exhaust Manifold Pipe Gasket

Tip
Improperly installed and/or leaking exhaust gaskets may affect vehicle emissions and/or On-Board Diagnostics (OBD) II system performance.