Catalytic Converter And Intermediate Pipe Heat Shields: Removal

WARNING: HEAVY WORK GLOVES AND EYE PROTECTION MUST BE WORN WHEN MODIFYING THE EXHAUST HEAT SHIELD, AND WHEN REMOVING AND INSTALLING THE INTERMEDIATE EXHAUST PIPE ISOLATOR. THE EXHAUST HEAT SHIELD EDGES ARE EXTREMELY SHARP AND CONTACT WITH THE EDGES COULD CAUSE PERSONAL INJURY.

NOTE: Inspect the shields for cracks, tears, and missing fasteners. All shields must be firmly attached. shields must be installed whenever removed for exhaust system or body repairs, etc. to prevent vehicle panel and fuel tank damage.

Raise vehicle squarely on a lift. Refer to lift instructions for positioning vehicle.

Fig 1: Vehicle Support Points
Courtesy of GENERAL MOTORS CORP.
Remove the intermediate pipe-to-catalytic converter nuts at converter and discard gasket.
Remove intermediate pipe isolator and lower exhaust system to the fullest extent.

Fig 2: Converter To Intermediate Pipe And Gasket
Courtesy of GENERAL MOTORS CORP.

NOTE: Use extreme care when grinding off the rivet heads. Always install all the shields to insure against panel and fuel tank damage.
Remove heat shield rivets by grinding off the heads with a small grinder or by punching out the center of the rivet with a 3/32 in. punch. Use a 3/16 in. drill to remove the rivet head without damaging retainer hole.

Fig 3: Heat Shield Rivets
Courtesy of GENERAL MOTORS CORP.