Catalytic Converter Replacement (LAU)

WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Catalytic Converter (LAU)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedures Remove the catalytic converter heat shield. Refer to Catalytic Converter Heat Shield Replacement (LAU) . Remove the transmission heat shield. Refer to Transmission Heat Shield Replacement (LAU) Remove the master cylinder heat shield. Remove the oxygen sensors. Refer to Heated Oxygen Sensor Replacement - Sensor 1 (LAU) and Heated Oxygen Sensor Replacement - Sensor 2 (LAU) . Remove the exhaust flexible pipe. Refer to Exhaust Flexible Pipe Replacement (LF1- Service) or Exhaust Flexible Pipe Replacement (LAU) .
1	Catalytic Converter Nut (Qty: 3) WARNING: Refer to Hot Exhaust System Warning . CAUTION: Refer to Fastener Caution . Tighten: 25 N.m (18 lb ft)
2	Catalytic Converter Support Bolt Tighten: 22 N.m (16 lb ft)
3	Catalytic Converter Brace Nut (Qty: 2) Tighten: 20 N.m (15 lb ft)
4	Catalytic Brace-to-Block Bolt (Qty: 2) Tighten: 22 N.m (16 lb ft)
5	Catalytic Converter Procedure: Apply lubricant to the turbocharger stud bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers . Torque the catalytic converter bolts in the following sequence: Tighten: Tighten "1" to 15 N.m (11 lb ft). Turn 270° counterclockwise. Tighten "2" to 15 N.m (11 lb ft). Turn 270° counterclockwise. Tighten "3" to 20 N.m (15 lb ft). Tighten "1" to 25 N.m (18 lb ft). Tighten "2" to 25 N.m (18 lb ft). Tighten the catalytic bracket bolts (4). Tighten: 20 N.m (15 lb ft) Tighten the catalytic bracket bolts (3). Tighten: 20 N.m (15 lb ft) Tighten the catalytic support bolt (2). Tighten: 22 N.m (16 lb ft)