Some 2020-2024 Corvettes may have a no start condition or the vehicle may not shut down. In some cases, these conditions may lead to a drained battery. There also may be a number of communication and powertrain DTCs set, including DTCs U0402, U0422, U1611, U0101, U0209, U3002, U1008, U0073, P07E6, P18E7, P17F6, P1961, P1964, P0652, P284F, P1789 and P0562.
These conditions may be due to park sensor drift in the transmission (Fig. 1, #5) or a communication error caused by a module or circuitry.
Fig. 1
To help with diagnosis, start a Technical Assistance Center (TAC) case and forward the park sensor measurement in millimeters found in the GDS transmission data; ETRS data lists. (Fig. 2) It’s not necessary to submit the session log for this condition.
TAC will contact GM Engineering with this data to verify the park position at birth. The data comparison will confirm whether the transmission has park sensor drift that will require transmission replacement or if there is another direction for vehicle repair.
Fig. 2
For additional information, refer to Bulletin #23-NA-176.
– Thanks to Marty Leach
