Sierra Classic 2500 4WD V8-8.1L (2007)
Muffler: Service and Repair
Muffler Replacement (6.0L, 6.6L, and 8.1L Engines)
Removal Procedure
1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Remove the spare tire, if necessary.
3. Install adjustable jack stands under the rear axle, if necessary.
4. If equipped with a 8.6 or 9.5 inch ring gear, remove the rear axle vent hose from the rear axle, if necessary.
5. Remove the vent hose swivel clip from the rear brake crossover pipe, if necessary.
6. If equipped with a 10.5 inch ring gear, remove the rear axle vent hose from the rear axle, if necessary.
7. Remove the vent hose swivel clip from the rear brake crossover pipe, if necessary.
8. Remove the rear shock absorbers lower bolts and nuts, if necessary.
9. Lower the rear axle using the adjustable jack stands, if necessary.
