I was wondering if you had any issues installing the parts from the part numbers that the OP posted? From your signature, it looks like you have a 2022 Yukon Denali. On GM parts websites, they say the part numbers that OP posted do not work with 2022 models.
I ask because I have a 2021 Denali...
I experienced the same rough idle issues you described when I took delivery of my 2021 Yukon Denali. It was definitely a rough idle and you could feel the engine and car slightly vibrate/shake. It did not occur all of the time though and I always used the correct octane fuel. If I applied just a...
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