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2012 Avalanche PCM 343 Check Engine Light

By dadof5, August 28, 2019 in Centurion Boat Maintenance, Performance, Troubleshooting

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dadof5 0

Posted August 28, 2019

My 2012 Avalanche had dead batteries when I came back to the lake after a week away. The batteries were original, manufactured in 2011. I got it started with a booster, but the check engine light was on, and it seemed to be running rough. The dealership suggested that was just due to low voltage. I replaced the batteries today and put it back on the water. It started fine, but the check engine light remains on. It would go off when i got up to higher speeds and RPMs, but as soon as I pulled back on the throttle, it came on again and remained on. It would go off again when I hit high speeds and RPMs. Any ideas why? or how to get rid of the problem?

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Go To Topic Listing Centurion Boat Maintenance, Performance, Troubleshooting

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