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'99 5.3L fuel return line?

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by FergusonT, Dec 17, 2012.

  1. FergusonT

    FergusonT New Member

    Which line coming off the fuel rail on the '99 5.3 is the return line? They look identical and I need to clamp the return off for a pressure test.

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