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What is the gap size for ac delco spark plugs for a 2003 suburban?
Wiki User
∙ 12y ago
the proper gap size for all vin. #'s of 2003 Chevy and gmc suburbans is 0.060 as per the Chevy owners manual. I have a 2003 Chevy Suburban and I am replacing my plugs tomorrow, good day kind friend. Danny Romero Louisiana
Wiki User
∙ 12y ago
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