NOTE: There are 2 Different type of coils the Square body coil UF271/D581 and the Round body coil UF262/D585.For the GM trucks and SUVs use two different types of coils: the MELCO style coils with the Square body and the DELPHI style coils with the Round body. Our coils shown in the pictures are the MELCO style (Square ).Your coils should have the number "12558693" on them. If there are no numbers,simply compare them to the pictures. Or just check your original coils to make sure whether you need the round or square style coil. Have any questions, please contact us by email. We will reply within 12 hours.Our Coils are Square , not the Round one . Please check it carefully before purchasing.Thanks. P.
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