Cant figure out this miss in my truck.
#1
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Truck is starting to have a bad miss to it. Get really bad when I shift into 3rd. I have a 04 silverado 4.8 5 speed work truck body style. I've had it tested multiple times no codes are showing up. The check engine light just flashes when it misses it never stays on. I have a cold air intake on it could it be the crc valve? I'd really like input before I start replacing things. Thanks.