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Compatible with Chevrolet
· 2003 Avalanche 2500 8.1L
· 2004 Avalanche 2500 8.1L
· 2005 Avalanche 2500 8.1L
· 2006 Avalanche 2500 8.1L
Compatible with GMC
· 2003 Sierra 2500 HD 8.1L
· 2004 Sierra 2500 HD 8.1L
· 2005 Sierra 2500 HD 8.1L
· 2006 Sierra 2500 HD 8.1L