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kjohns339

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  1. kjohns339
    Hi all, new to the forum. I have a 2021 Tahoe LT 5.3 and my CEL came on recently. Pulled the codes and I’m getting P00FF and U1962. Truck runs and drives fine. I’ve read these may be related to OnStar/telematics rather than a drivability issue. I also noticed intermittent in vehicle Wi-Fi issues a few weeks ago. Has anyone experienced this, know how to troubleshoot, or the likely fix? Appreciate any insight.

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