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Valve Inspection Procedure

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Suburban, and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Inspect cylinder head for damaged gasket surfaces, damaged threaded bolt holes, burnt or eroded areas in combustion chamber, cracks in exhaust ports and combustion chambers, external cracks in water chamber, restrictions in intake or exhaust passages and restrictions in cooling system passages.

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