Installation Procedure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
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.
- Remove the oxygen sensors and install into new exhaust pipe.
Tighten
Tighten the sensors to 42 N.m (31 ft lbs).
- Install new gasket to the catalytic converter pipe flange.
- Install the exhaust pipe to the vehicle.
- Install the nuts for the catalytic converter pipe to exhaust pipe.
Tighten
Tighten the flange nuts to 48 N.m (35 ft lbs).
- Tighten the exhaust pipe clamp nut.
Tighten
Tighten the nut to 54 N.m (40 ft lbs).
CAUTION: When inspecting or replacing exhaust system components, make sure there is adequate clearance from all points on the underbody to prevent overheating of the floor pan and possible damage to the passenger compartment insulation and trim materials. - Verify the exhaust system for proper clearance and the alignment of all components.
- Install the exhaust hanger and bolts.
Tighten
Tighten the bolts to 17 N.m (13 ft lbs).
- Lower the vehicle.