Exhaust Pipe/Muffler Hanger: Service and Repair

Exhaust Hanger Mounting Bracket Replacement (6.0L, 6.6L, and 8.1L Engines)

Removal Procedure





1. Remove the exhaust manifold pipe.
2. Remove the catalytic converter.
3. If equipped with a 4L60-E automatic transmission, remove the exhaust pipe hanger bracket bolts.





4. If equipped with a 6.0L engine and a 4L80-E automatic transmission, remove the exhaust pipe hanger bracket bolts.





5. If equipped with a 6.0L, or 8.1L engine and a 4L80-E automatic transmission, remove the exhaust pipe hanger bracket bolts.





6. If equipped with a 6.0L engine and a 5-speed manual transmission, remove the transmission bolts.





7. If equipped with a 6.0L engine and a 5-speed manual transmission, remove the exhaust pipe hanger bracket bolts.





8. If equipped with a 6.6L or 8.1L engine and a Allison transmission, remove the exhaust pipe hanger bracket bolts.





9. If equipped with a 6.6L or 8.1L engine and a 6-speed manual transmission, remove the exhaust pipe hanger bracket bolts.
10. Remove the exhaust manifold pipe bracket.

Installation Procedure





1. Install the exhaust manifold pipe bracket.

Notice: Refer to Fastener Notice in Service Precautions.

2. If equipped with a 6.6L or 8.1L engine and a 6-speed manual transmission, install the exhaust pipe hanger bracket bolts.
Tighten the bolts to 12 Nm (106 inch lbs.).





3. If equipped with a 6.6L or 8.1L engine and a Allison transmission, install the exhaust pipe hanger bracket bolts.
Tighten the bolts to 12 Nm (106 inch lbs.).





4. If equipped with a 6.0L engine and a 5-speed manual transmission, install the exhaust pipe hanger bracket bolts.
Tighten the bolts to 12 Nm (106 inch lbs.).





5. If equipped with a 6.0L engine and a 5-speed manual transmission, install the transmission bolts.
Tighten the bolts to 100 Nm (74 ft. lbs.).





6. If equipped with a 6.0L or 8.1L engine and a 4L80-E automatic transmission, install the exhaust pipe hanger bracket bolts.
Tighten the bolts to 12 Nm (106 inch lbs.).





7. If equipped with a 6.0L engine and a 4L80-E automatic transmission, install the exhaust pipe hanger bracket bolts.
Tighten the bolts to 12 Nm (106 inch lbs.).





8. If equipped with a 4L60-E automatic transmission, install the exhaust pipe hanger bracket bolts.
Tighten the bolts to 17 Nm (13 ft. lbs.).
9. Install the catalytic converter.
10. Install the exhaust manifold pipe.