GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2007 🢒 Rendezvous - FWD 🢒 General Information 🢒 General Information 🢒 Exhaust Seal Replacement

Removal Procedure

    Object Number: 1642652 Size: SH
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Install a utility stand under the catalytic converter for support.
  3. Remove the heated oxygen sensor (HO2S) electrical connector (1) clip from the heat shield.
  4. Remove the connector position assurance (CPA) retainer (2).
  5. Disconnect the HO2S electrical connector.

    6. Object Number: 260064 Size: SH

    Notice: To prevent internal damage to the flexible coupling of the catalytic converter assembly, the converter must be supported. The vertical movement at the rear of the catalytic converter assembly must not exceed 6 degrees up or down.

  6. Remove the catalytic converter to exhaust manifold nuts.
  7. Remove the catalytic converter from the catalytic converter hanger.
  8. Reposition the catalytic converter rearward in order to access the exhaust seal.

    9. Object Number: 107855 Size: SH
  9. Remove the catalytic converter seal.

Installation Procedure

    Object Number: 107855 Size: SH
  1. Install the catalytic converter seal.

    2. Object Number: 260064 Size: SH
  2. Install the catalytic converter to the exhaust manifold.
  3. Install the catalytic converter to the catalytic converter hanger.
  4. Remove the utility stand from under the vehicle.

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

  5. Install the catalytic converter nuts.

    6. Tighten
    Tighten the nuts to 34 N·m (25 lb ft).


    Object Number: 1642652 Size: SH
  6. Connect the HO2S electrical connector.
  7. Install the CPA retainer (2).
  8. Install the HO2S electrical connector (1) clip to the heat shield.
  9. Lower the vehicle.