Sierra 3500 4WD V8-6.6L DSL Turbo VIN 2 (2004)
Catalytic Converter: Service and Repair
Catalytic Converter Replacement (6.6L Engine)
Removal Procedure
1. Raise and suitably support the vehicle.
2. Support the transmission with a suitable transmission jack.
3. Remove the transmission mount to transmission support nuts.
4. Raise the transmission off of the transmission support.
5. Remove the transmission support crossmember bolts.
6. Remove the transmission support crossmember.
7. If equipped with the 6.6L engine, remove the exhaust muffler nuts.
