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Negative long term fuel trims
Hey Burban, thanks for your feedback. Sorry it took forever to get back to you. I had alk 4 O2 sensors and the high pressure pump replaced last April about 15k miles ago. It ran really good for the rest of 2024 but I am having nearly the same issue. So frustrating. I have checked...- EdMay
- Post #3
- Forum: Engine & Drivetrain
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Negative long term fuel trims
Hi all, I've got a 2017 Yukon with 5.3, 80k miles. I'm having a constant problem with the engine loosing power, light throttle, it's very subtle and can also be felt during shifts. I was a GM tech for 25 years (got out in 2011) so I've got a very good understanding of almost everything...- EdMay
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- Replies: 2
- Forum: Engine & Drivetrain
