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different spark plug wires for different coils? 2001 LS1


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Getting ready to change spark plugs again at 150k and figured I would do wires too. It looks like there are two different sets based on coil part numbers. I can't see a number - is it obvious on the bottom of the coil once I remove one? 2001 Suburban 1500 w/ 5.3

 

 

 

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Try the link again, it works. The difference in the plug wires is the length. Just get the longer ones and you'll have no problems. Only like 1"- 1 1/2" difference

 

Round coil - 19005218 AC Delco wireset 748GG 9.2" long

 

 

Square coil - 12558693 AC Delco wireset 748HH 10.5" long

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No, I meant that when I searched before posting this request that for some reason I didn't get that very helpful post in the search results. I went there and it was just what I needed.

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  • 4 weeks later...

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