Gasket Use and Applying Sealants

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Do not use any gasket again unless specified.
Gaskets that can be used again will be identified in the service procedure.
Do not apply sealant to any gasket or sealing surface unless called out in the service information.