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Catalytic Converter Replacement (with Exhaust Clamp)

Fig 1: Catalytic Converter Components (With Exhaust Clamp)
GM2292214Courtesy of GENERAL MOTORS COMPANY
Catalytic Converter Replacement (with Exhaust Clamp)

Callout Component Name

Preliminary Procedure

  1. Remove the engine skid plate (if equipped). Refer to Oil Pan Skid Plate Replacement (1500 with RPO NZZ) , Oil Pan Skid Plate Replacement (2500/3500 with RPO NZZ)
  2. Remove the transmission support crossmember. Refer to Transmission Support Crossmember Replacement (4WD 2500 Series) , Transmission Support Crossmember Replacement (4WD 1500 Series) , Transmission Support Crossmember Replacement (2WD 2500 Series) , Transmission Support Crossmember Replacement (2WD 1500 Series)
  3. Remove the oxygen sensors. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 , , Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 , , Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 , and Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 .
1 Left Exhaust Manifold Nut (Qty: 3)
WARNING:

Refer to Exhaust Service Warning .

WARNING:

Refer to Hot Exhaust System Warning .

CAUTION:

Refer to Fastener Caution .


Tighten 
50 N.m (37 lb ft)
2 Seal
3 Right Exhaust Manifold Nut (Qty: 3)
Tighten 
50 N.m (37 lb ft)
4 Seal
5 Exhaust Muffler Clamp Nut
TIP:  Replace the exhaust muffler clamp with a NEW clamp.
Tighten 
28 N.m (21 lb ft)
6 Catalytic Converter
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