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Discussion Starter · #1 ·
I recently replaced the 4.8 L motor in my 2004 silverado with a 5.3L 2000 motor amd the truck will not spark. I've got gas pressure, my spark plugs, leads and coil packs are all good but for some reason I can't get a spark. I've checked the crank shaft sensor, replaced the map sensor, scanned it with a scan tool and received no error messages. When I put the new motor in I swapped the intakes and wiring harness. Any help would be greatly appreciated
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