Installation Procedure

NOTE: 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.

Fig 1: Heated Oxygen Sensor (HO2S1), Exhaust Pipe Hanger, Springs And Bolts (2WD)

Courtesy of GENERAL MOTORS CORP.

Install the front pipe to the vehicle.
Install the front pipe to the front pipe hanger (2).
Install the following components to the front pipe to the Three Way Catalytic Converter (TWC) exhaust pipe:
- The 2 springs
- The 2 bolts
  Tighten: Tighten the front pipe-to-Three Way Catalytic Converter (TWC) exhaust pipe bolts to 43 N.m (32 lb ft).
Install the following components to the exhaust manifold:
- The 2 springs
- The 2 bolts
  Tighten: Tighten the front pipe-to-exhaust manifold bolts to 43 N.m (32 lb ft).

Fig 2: Floor Panel Brace

Courtesy of GENERAL MOTORS CORP.

Install the floor panel brace.
Tighten: Tighten the front pipe floor brace nuts to 30 N.m (22 lb ft).
Install the oxygen sensors. Refer to the following procedures:
- Heated Oxygen Sensor Replacement - Position 1 (FWD) or Heated Oxygen Sensor Replacement - Position 1 (AWD) in Engine Controls-1.8L (LV6)
- , Heated Oxygen Sensor Replacement - Position 1 in Engine Controls-1.8L (LV6)
- Heated Oxygen Sensor Replacement - Position 2 (FWD) or Heated Oxygen Sensor Replacement - Position 2 (AWD) in Engine Controls-1.8(LNK)
- Heated Oxygen Sensor Replacement - Position 2 in Engine Controls-1.8(LNK)
Lower the vehicle.