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Po300 code only
ok i kno this is old an all and been talked about many times but I’m stumped, 2004 z71 Tahoe I have a po300 code only, hooked scanner to it and shows cylinder 1 and 8.. have done all the regular things like everyone has.. plugs, wires, coil packs, fuel reg, fuel pump, cats.. I’m at a loss on...- Drewboy
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- Replies: 6
- Forum: Engine & Drivetrain
