We just purchased this 2023 Cadillac CT5 from Cadillac of South Charlotte and took delivery by long haul truck at our home in Seymour, TN on [XXX]. It had 40,744 miles on the odometer. We drove the car approximately 12 miles when suddenly the car went into reduced power mode where it would not shift past 4th or 5th gear limiting our speed to approximately 45 miles per hour. We drove slowly to the closest GM Service location that was just a few miles away and during that time the message started alternating to another message that said the transmission was about to seize. At that point we had the car towed to Cadillac of Knoxville and the next day they told us that the transmission control valve body was bad. I have since learned that General Motors has recalled over 90,000 vehicles due to a transmission control valve issue that can cause the wheels to momentarily lock up, increasing the risk of a crash. Supposedly the affected models include just the 2020-2021 Cadillac CT4, CT5, 2019-2020 Cadillac CT6, and 2020-2022 Chevrolet Camaro, with notifications to start being sent to owners this month mid-April. The recall for that issue according to what I read is to program the car to monitor the transmission and if it starts to fail to go into a reduced power mode. This is what my 2023 CT5 has just experienced. The Service Consultant at the dealership said they had ordered the part but that it was back ordered with no expected delivery date. Our new car is dead at the dealership. Everything I have read says GM is not fixing the defect in these transmissions. They are replacing the part with the same defectively designed part and transmissions that have been ‘fixed’ are soon returning having to be ‘fixed’ again. My vehicle is not covered by the most recent recall. Please take steps to expand the recall because they are still using the same transmissions and nothing has been done to fix the design flaw with them. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)