GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Tracker - 4WD 🢒 Engine 🢒 Engine Exhaust 🢒 Catalytic Converter Replacement

Catalytic Converter Replacement Standard Converter 1.6L

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    2. Object Number: 492870 Size: MH
  2. Remove the two bolts from the front pipe assembly and separate the front pipe from the catalytic converter assembly (5).
  3. Remove the electrical connector at the heated oxygen sensor (H02S2) (6).

    4. Object Number: 166026 Size: SH
  4. Remove the two nuts from the catalytic converter assembly (1) and separate from the resonator/muffler/tail pipe assembly (2).
  5. Remove the hanger supporting the catalytic converter assembly.
  6. Remove the catalytic converter assembly from the vehicle.
  7. Clean the gasket and the seal mating surfaces.

Installation Procedure

    Important: When installing a new exhaust system component, always use new gaskets and seals.


    Object Number: 492870 Size: MH
  1. Install the catalytic converter assembly (5) to the vehicle.
  2. Support the catalytic converter assembly with a hanger.
  3. Attach the catalytic converter assembly with a new gasket to the resonator/muffler/tail pipe assembly (7).
  4. Secure the resonator/muffler/tail pipe assembly with two nuts. Do not fully tighten the nuts.
  5. Attach the electrical connector to the heated oxygen sensor (H02S2) (6).
  6. Use a new seal, and connect the front pipe to the catalytic converter assembly and secure with two bolts. Do not fully tighten the bolts.

    7. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  7. Align all system components before tightening the fasteners, in order to prevent noise or vibrations.

    8. Tighten

        • Tighten the front pipe to catalytic converter assembly bolts to 50 N·m (37 lb ft).
        • Tighten the catalytic converter to resonator/muffler/tail pipe assembly nuts to 35 N·m (26 lb ft).
  8. Lower the vehicle.

Catalytic Converter Replacement PUP Converter 1.6L

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    2. Object Number: 472422 Size: SH
  2. Remove the electrical connector at the heated oxygen sensor (H02S1) (1).
  3. Remove the two bolts from the PUP catalytic converter and separate the PUP (2) from the standard catalytic converter assembly.
  4. Remove the three nuts from the flange of the PUP catalytic converter (1) and separate from the exhaust manifold.
  5. Remove the PUP catalytic converter from the vehicle.
  6. Clean the gasket and the seal mating surfaces.

Installation Procedure

    Important: When installing a new exhaust system component, always use new gaskets and seals.


    Object Number: 472422 Size: SH
  1. Install the PUP catalytic converter (2) to the exhaust manifold.
  2. Secure the PUP catalytic converter with three nuts. Do not fully tighten the nuts.
  3. Attach the PUP catalytic converter with a new gasket to the standard catalytic converter assembly.
  4. Secure the PUP catalytic converter with two bolts. Do not fully tighten the bolts.
  5. Attach the electrical connector to the heated oxygen sensor (H02S1) (1).

    6. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  6. Align all system components before tightening the fasteners, in order to prevent noise or vibrations.

    7. Tighten

        • Tighten the PUP catalytic converter to standard catalytic converter assembly bolts to 50 N·m (37 lb ft).
        • Tighten the PUP catalytic converter to exhaust manifold nuts to 50 N·m (37 lb ft).
  7. Lower the vehicle.

Catalytic Converter Replacement Standard Converter 2.0L

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    2. Object Number: 492870 Size: MH
  2. Remove the two bolts from the front pipe assembly and separate the front pipe from the catalytic converter assembly (5).
  3. Remove the electrical connector at the heated oxygen sensor (H02S2) (6).

    4. Object Number: 166026 Size: SH
  4. Remove the two nuts from the catalytic converter assembly (1) and separate from the resonator/muffler/tail pipe assembly (2).
  5. Remove the hanger supporting the catalytic converter assembly.
  6. Remove the catalytic converter assembly from the vehicle.
  7. Clean the gasket and the seal mating surfaces.

Installation Procedure

    Important: When installing a new exhaust system component, always use new gaskets and seals.


    Object Number: 492870 Size: MH
  1. Install the catalytic converter assembly (5) to the vehicle.
  2. Support the catalytic converter assembly with a hanger.
  3. Attach the catalytic converter assembly with a new gasket to the resonator/muffler/tail pipe assembly (7).
  4. Secure the resonator/muffler/tail pipe assembly with two nuts. Do not fully tighten the nuts.
  5. Attach the electrical connector to the heated oxygen sensor (H02S2) (6).
  6. Use a new seal, and connect the front pipe to the catalytic converter assembly and secure with two bolts. Do not fully tighten the bolts.

    7. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  7. Align all system components before tightening the fasteners, in order to prevent noise or vibrations.

    8. Tighten

        • Tighten the front pipe to catalytic converter assembly bolts to 50 N·m (37 lb ft).
        • Tighten the catalytic converter to resonator/muffler/tail pipe assembly nuts to 35 N·m (26 lb ft).
  8. Lower the vehicle.

Catalytic Converter Replacement PUP Converter 2.0L

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    2. Object Number: 472422 Size: SH
  2. Remove the electrical connector at the heated oxygen sensor (H02S1) (1).
  3. Remove the two bolts from the PUP catalytic converter and separate the PUP (2) from the standard catalytic converter assembly.
  4. Remove the three nuts from the flange of the PUP catalytic converter (1) and separate from the exhaust manifold.
  5. Remove the PUP catalytic converter from the vehicle.
  6. Clean the gasket and the seal mating surfaces.

Installation Procedure

    Important: When installing a new exhaust system component, always use new gaskets and seals.


    Object Number: 472422 Size: SH
  1. Install the PUP catalytic converter (2) to the exhaust manifold.
  2. Secure the PUP catalytic converter with three nuts. Do not fully tighten the nuts.
  3. Attach the PUP catalytic converter with a new gasket to the standard catalytic converter assembly.
  4. Secure the PUP catalytic converter with two bolts. Do not fully tighten the bolts.
  5. Attach the electrical connector to the heated oxygen sensor (H02S1) (1).

    6. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  6. Align all system components before tightening the fasteners, in order to prevent noise or vibrations.

    7. Tighten

        • Tighten the PUP catalytic converter to standard catalytic converter assembly bolts to 50 N·m (37 lb ft).
        • Tighten the PUP catalytic converter to exhaust manifold nuts to 50 N·m (37 lb ft).
  7. Lower the vehicle.

Catalytic Converter Replacement 2.5L Engine

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

    2. Object Number: 717889 Size: LH
  2. Remove the 2 bolts from the front pipe assembly and separate the front pipe from the catalytic converter assembly (8).

    3. Object Number: 166026 Size: SH
  3. Remove the 2 nuts from the catalytic converter assembly (8) and separate from the muffler/tail pipe assembly (12).
  4. Remove the hanger supporting the catalytic converter assembly.
  5. Remove the catalytic converter assembly from the vehicle.
  6. Clean the gasket and the seal mating surfaces.

Installation Procedure

    Important: When installing a new exhaust system component, always use new gaskets and seals.


    Object Number: 717889 Size: LH
  1. Install the catalytic converter assembly (8) to the vehicle.
  2. Support the catalytic converter assembly with a hanger.
  3. Attach the catalytic converter assembly with a new gasket to the muffler/tail pipe assembly (12).
  4. Secure the muffler/tail pipe assembly with 2 nuts. Do not fully tighten the nuts.
  5. Use a new seal, and connect the front pipe to the catalytic converter assembly and secure with 2 bolts. Do not fully tighten the bolts.

    6. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  6. Align all system components before tightening the fasteners, in order to prevent noise or vibrations.

    7. Tighten

        • Tighten the front pipe to catalytic converter assembly bolts to 50 N·m (37 lb ft).
        • Tighten the catalytic converter to resonator/muffler/tail pipe assembly nuts to 60 N·m (44 lb ft).
  7. Lower the vehicle.