Catalytic Converter Replacement (LMM)

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Catalytic Converter (LMM)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedure Remove the oil pan skid plate (if equipped). Refer to Oil Pan Skid Plate Replacement (2500/3500 with RPO NZZ) . Remove the transmission support crossmember. Refer to Transmission Support Crossmember Replacement (2WD 1500/2500) or Transmission Support Crossmember Replacement (4WD 1500/2500) or Transmission Support Crossmember Replacement (2WD 2500 HD/3500) or Transmission Support Crossmember Replacement (4WD 2500 HD/3500) .
1	Exhaust Manifold Pipe Clamp WARNING: Refer to Exhaust Service Warning . WARNING: Refer to Hot Exhaust System Warning . CAUTION: Refer to Fastener Caution . Tighten: 12 N.m (9 lb ft)
2	Exhaust Muffler Nut (Qty: 4) Tighten: 45 N.m (33 lb ft)
3	Gasket
4	Exhaust Pipe Hanger Bracket Nut Tighten: 45 N.m (33 lb ft)
5	Catalytic Converter