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Re: Changing 2004 Tahoe 5.3L spark plugs
Posted to Technical Tips Forum on 12/14/2020 4 Replies

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At 300K I would bet that's the 2nd or 3rd set of plugs and wires that's been replaced on the engine. I would also bet that whoever replaced those plug and wires used some dielectric grease on the plu... Login to read more.

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