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" Reduced acceleration" warning / CEL
Have you heard back what was the issue? I have 2021 Tahoe High Country and last week encountered a similar issue. While driving on the highway, transmission suddenly stopped shifting higher gears and felt like on Neutral. "Reduced Acceleration" message and CEL. Arrived home and next morning...- ESTTahoe
- Post #14
- Forum: Engine & Drivetrain
