Exhaust Front Pipe Replacement

Fig 1: Exhaust Front Pipe

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
WARNING: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool. WARNING: Always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury. CAUTION: Do not bend the exhaust flex pipe more than 10 degrees in any direction. Bending of more than 10 degrees or twisting in a range of ±0.5 degrees will damage the exhaust flex decoupler. Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove the underbody brace - front. Refer to Underbody Brace Replacement - Front . Remove the underbody brace - middle. Refer to Underbody Brace Replacement - Middle X-Rod .
1	Catalytic Converter Nut (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten 22 N.m (16 lb ft)
2	Exhaust Front Pipe Nut (Qty: 2) Tighten 17 N.m (13 lb ft)
3	Exhaust Pipe Front Hanger Insulator Nut (Qty: 2) Tighten 22 N.m (16 lb ft)
4	Exhaust Front Pipe Hanger Bracket Bolt M10 (Qty: 2) Tighten 22 N.m (16 lb ft)
5	Exhaust Front Pipe Hanger Bracket Bolt (Qty: 2) CAUTION: Refer to Torque-to-Yield Fastener Caution . Procedure Install NEW bolts, do NOT reuse old bolts. Tighten First pass: 60 N.m (44 lb ft) Second pass: 30 - 45 degrees, using the EN-45059 meter Special Tools EN-45059 Angle Meter For equivalent regional tools, refer to Special Tools .
6	Exhaust Front Pipe Procedure Install NEW front exhaust front pipe gasket.
7	Exhaust Front Pipe Gasket to Exhaust Rear Muffler