Flash: Transmission Control Module (TCM) Updates

Bulletin number

21-015-22

Component

Power train

Summary

Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs). U0293-00 - Lost Communication With Hybrid Control Module. P0732-00 - Gear 2 Shift Incorrect Ratio. P061B-00 - Internal Control Module Torque Calculation Performance. Other software enhancement::2?1 downshift improvement. Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this PCM update:Hybrid Control Processor (HCP), Auxiliary Hybrid Control Processor (AHCP) also known as the Power Invertor Module (PIM). Powertrain Control Module (PCM). Battery Pack Control Module (BPCM). Integrated Dual Charging Module (IDCM).

Owners of these vehicles have filed 149 complaints in the transmission category.