Pro tip: I chased a misfire with a $200 scan tool for a month and the problem was a $7 boot

Lisa Flores · 2026-09-25T17:55:04.610589+00:00

After swapping coils and plugs on a 2011 Silverado with a P0302, I finally pulled the plug wire and found the boot cracked right at the terminal, so has anyone else had a scan tool send them down the wrong road like that?

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Pro tip: I chased a misfire with a $200 scan tool for a month and the problem was a $7 boot | Auto Mechanics - SMM Buzz