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P0300 code on 2004 GMC Yukon XL Denali - 119,000 miles
How do I do the CASE relearn? Throttle body was cleaned out within the last two weeks, when I replaced the lifters. I also changed the fuel pump already so i’m guessing the fuel trims are ok. I do not have the proper scan tool to see the fuel trims.- zaahirkhan49
- Post #3
- Forum: Engine & Drivetrain
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P0300 code on 2004 GMC Yukon XL Denali - 119,000 miles
2004 GMC Yukon XL Denali - 119,000 miles Have had a P0300 code for a while now. Changed everything from spark plugs to lifters, cleaned as much dirt and carbon off the engine, but I still get the same code. After driving for a while, there is a noticeable shake / vibration at idle. Also, all of...- zaahirkhan49
- Thread
- #misfire #p0300 engine misfire lifter
- Replies: 2
- Forum: Engine & Drivetrain
