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engine question

Discussion in 'Chevy Tahoe Forum (GMC Yukon, Cadillac Escalade)' started by M-technik-3, Jul 26, 2012.

  1. M-technik-3

    M-technik-3 Member

    02 Tahoe, Excuse my newbie know how, I have not owned a domestic in some years. My question is I thought the LS series engines 5.3L were cast block with cast iron heads?

    Mine has aluminum heads so I thought that was odd. Or am I just confused?

    EDIT: Never mind after some digging around I see that the Z in the 8th digit equals an L59 Flex Fuel engine.

    Need to look up an odd rattle, sounds like the broken bolt issue on the flex plate.
    Last edited: Jul 26, 2012

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