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    Multiple cylinder misfire on 1,3,5,7 and traction light

    I've been trying to diagnose this problem with my 2007 Yukon Denali 6.2 Liter. Immediately after starting the truck up, catastrophic misfires start to happen. It's a very rough idle with the traction light popping up along with the engine light blinking. The codes that pop up are: P0301, P0351...

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