Chains & Sprockets 2005-2009 Chevy & GMC 273

You should replace the chain when doing major transfer case service, plus you should inspect the sprockets for wear on the teeth. If you can feel teeth wear with your fingernail REPLACE BOTH the SPROCKETS and CHAIN!

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You should replace the chain when doing major transfer case service, plus you should inspect the sprockets for wear on the teeth. If you can feel teeth wear with your fingernail REPLACE BOTH the SPROCKETS and CHAIN!