GM Service Manual Online
For 1990-2009 cars only

Exhaust Seal Replacement 4.8L, 5.3L, 6.0L, 6.2L

Removal Procedure


    Object Number: 1856474  Size: SH
  1. Remove the catalytic converter. Refer to Catalytic Converter Replacement .
  2. Remove and discard the appropriate exhaust seal (1 or 2). (1500 series shown, 2500 series similar).

Installation Procedure


    Object Number: 1856474  Size: SH
  1. Install the NEW appropriate exhaust seal (1 or 2). (1500 series shown, 2500 series similar).
  2. Install the catalytic converter. Refer to Catalytic Converter Replacement .

Exhaust Seal Replacement 6.0L - Cab/Chassis

Removal Procedure


    Object Number: 1856476  Size: SH
  1. Remove the left catalytic converter, if required. Refer to Catalytic Converter Replacement - Left Side.
  2. Remove the exhaust manifold pipe, if required. Refer to Exhaust Manifold Pipe Replacement.
  3. Remove and discard the appropriate exhaust seal (1) or gasket (2).

Installation Procedure


    Object Number: 1856476  Size: SH
  1. Install the NEW appropriate exhaust seal (1) or gasket (2).
  2. Install the exhaust manifold pipe, if required. Refer to Exhaust Manifold Pipe Replacement.
  3. Install the left catalytic converter, if required. Refer to Catalytic Converter Replacement - Left Side.