Exhaust Hanger Mounting Bracket Replacement 6.0L, 6.6L

1. If equipped with a 6.0L engine, remove the exhaust manifold pipe. Refer to Exhaust Manifold Pipe Replacement .
2. If equipped with a 6.0L engine, remove the left catalytic converter. Refer to Catalytic Converter Replacement - Left Side .
3. If equipped with a 6.6L engine, remove the catalytic converter. Refer to Catalytic Converter Replacement .
4. If equipped with a 4L80-E automatic transmission, regular production option (RPO) MT1, remove the exhaust pipe hanger bracket bolts and bracket.



5. If equipped with a Allison® automatic transmission, RPO MW7, remove the exhaust pipe hanger bracket bolt/stud and bracket.



6. If equipped with a 6L90-E automatic transmission, RPO MYD, remove the exhaust pipe hanger bracket bolts and bracket.

Notice: Refer to Fastener Notice in the Preface section.




1. If equipped with a 6L90-E automatic transmission, RPO MYD, install the exhaust pipe hanger bracket and bolts.

Tighten
Tighten the bolts to 25 N·m (18 lb ft).




2. If equipped with a Allison® automatic transmission, RPO MW7, install the exhaust pipe hanger bracket and bolt/stud.

Tighten
Tighten the bolt/stud to 25 N·m (18 lb ft).




3. If equipped with a 4L80-E automatic transmission, RPO MT1, install the exhaust pipe hanger bracket and bolts.

Tighten
Tighten the bolts to 25 N·m (18 lb ft).

4. If equipped with a 6.6L engine, install the catalytic converter. Refer to Catalytic Converter Replacement .
5. If equipped with a 6.0L engine, install the left catalytic converter. Refer to Catalytic Converter Replacement - Left Side .
6. If equipped with a 6.0L engine, install the exhaust manifold pipe. Refer to Exhaust Manifold Pipe Replacement .