Silverado 1500 2WD V8-5.3L (2007)
11. Remove the exhaust manifold bolts, and exhaust manifold.
12. Remove and discard the exhaust manifold gasket.
13. Remove and discard the catalytic converter seal.
14. If replacing the exhaust manifold, remove the exhaust manifold heat shield bolts, and shield from the exhaust manifold.
Installation Procedure
Important:
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Tighten the exhaust manifold bolts as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets
may affect vehicle emissions and/or On-Board Diagnostic (OBD) II system performance.
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The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material.
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Do not apply sealant to the first 3 threads of the bolt.
