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Good Evening, Gents. I hope all is well. Let’s get started with a little introduction of myself. My name is Cody and I’m new to this forum. I’m a long-time active member of other forums with previous vehicles. A year and a half ago I traded in my 2001 Z06 for an 07 Silverado. Extended cab, Flex Fuel 5.3 with 78,000 miles. 1 owner and a VERY well maintained vehicle. The truck has done me very well and is extremely dependable (duh; Chevy and the 5.3). About 4 months ago I started having a random misfire issue when traveling between work and home (~300 miles each way on the weekend). I had a minor misfire/hesitation and a check engine light. It wasn’t flashing, so I drove into the next town and had it checked. It was a p0352 and p0300 code. I got to my trailer where I work and changed the plugs and coil pack that it was indicating was the issue. It cleared up for a bit and then the p0352 returned. I swapped the coil pack with a different cylinder, along with the spark plug wire as well, and the CEL return. Same code. I’m sort of at a stump for what it could be as some people have said ground issues, wiring issues, etc. I’ve always been mechanically savvy and have maintenanced my own vehicles and have repaired/modified them. I’m really just seeing if anyone has had a similar issue and what their outcome was. The truck has a very intermittent miss. Sometimes it drives and runs great, then out of the blue with stumble and fall on its face. It’s very inconsistent. Any insight would be awesome. Thank you so much.
