Sierra 1500 2WD V6-4.3L (2008)
7. Remove the exhaust manifold bolts and stud.
8. Remove the exhaust manifold and gaskets (1). Discard the gaskets.
9. Remove the exhaust manifold to catalytic converter seal (2). Discard the seal.
Installation Procedure
1. Install a NEW exhaust manifold to catalytic converter seal (2) into the relief in the catalytic converter.
2. Place the exhaust manifold into position and install the manifold studs to the catalytic converter.
3. Place the NEW exhaust manifold gaskets (1) between the manifold and the cylinder head.
Notice: Refer to Fastener Notice .
4. Install the exhaust manifold bolts and stud.
Tighten the bolts/stud to 30 N.m (22 lb ft).
