Some 2016-2019 ATS models and 2016-2020 Camaro models equipped with the 6-speed manual transmission (RPO M13) may have an illuminated Check Engine MIL and DTC P17A2 (Transmission Clutch Slip Detected) may be set in the Engine Control Module (ECM). These conditions may be the result of the output speed sensor reluctor wheel slipping on the shaft due to improper torque of the output shaft nut.
Remove the output vehicle speed sensor and use a small tool to lightly pry on the speed sensor reluctor wheel. If the reluctor wheel moves, install a new output shaft flange thrust washer and nut and torque to specification. If the reluctor wheel does not move, refer to the appropriate Service Information to continue diagnosis.
To install a new output shaft flange thrust washer and nut, first remove the two-piece propeller shaft. Install the J-45012 Holding Fixture (Fig. 9, #1) and remove the output shaft flange nut (Fig. 9, #3) and thrust washer. (Fig. 9, #2)
Fig. 9
Install the new output shaft flange thrust washer and nut. Torque the nut to 145 Nm (107 lb.-ft.)
Refer to Bulletin #20-NA-153 for additional information and part numbers.
– Thanks to Ann Briedis
