<https://www.coloradodiesel.org/threads/two-injectors-need-replacement.67523/>
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"My truck, which was purchased new (89mi) in April 2019 and has 17,750 on the odo, recently displayed a Check Engine light and showed 'service traction control system' on a recent 750 mi trip. For the past several months I've noticed a bit rougher and lower idle speed (normal is 750 and smooth) when starting motor when warm. It will idle at 650-700 and then go back normal later.\n\nI took it to a Chev/GMC store today, mainly because I had the Check Engine Light, even though it is not illuminated now.\n\nThe convulsion/conclusion is that an⁷ 0300 code was indicated on 2 injectors, which the tech said showed intermittent failure. They have ordered the replacements for installation early next week.\n\nThis is all news to me because the truck runs great except for the occasional rough idle.\n\nI fuel at major truck stops when fueling my Coach and at other times at what I know to be fairly high diesel volume service stations. I also put in 10 oz Diesel Kleen with EVERY fueling.\n\nHas anyone else had injector issues so 'early' as this?"
<https://www.coloradodiesel.org/threads/two-injectors-need-replacement.67523/>