Sierra Classic 2500 4WD V8-6.0L (2007)
1. Install the exhaust manifold pipe seal(s).
2. Raise the catalytic converter or exhaust manifold pipe using the adjustable jackstands.
3. Notice: Refer to Fastener Notice in Service Precautions.
If equipped with a 6.0L or 8.1L engine, perform the following:
1. Install the exhaust hanger mounting bracket bolts.
2. Install the left exhaust manifold pipe nuts.
* Tighten the bolts to 12 Nm (106 inch lbs.).
* Tighten the nuts to 50 Nm (39 ft. lbs.).
4. If equipped with a 6.0L or 8.1L engine, install the right exhaust manifold pipe nuts.
Tighten the nuts to 50 Nm (39 ft. lbs.).
5. If equipped with a 4.3L, 4.8L, or 5.3L engine, install the right exhaust manifold pipe nuts.
