Symptom/condition

Bulletin number

21-016-16

Component

Power train: automatic transmission

Summary

SYMPTOM/CONDITION: Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Codes (DTCs) have been set: • P0887-00 - TCM Power Control Circuit High (Sales Codes ED6 and EHB). • P061B-00 - Internal Control Module Torque Calculation Performance (Sales Codes ED6 and EHB). • P0711-00 - Transmission Fluid Temperature Sensor A Circuit Range-Performance. • P072F-00 - Stuck In Gear 4. • P076F-00 - Gear 7 shift Incorrect Ratio. • P0810-00 - Clutch Position Control Error. • P1CC9-00 - Unable To Engage Gear. • P0734-00 - Gear 4 Shift Incorrect Ratio. In addition, the following transmission shift and performance improvements are included in this software release: • 2-1 downshift quality when using Electronic Range Shifter (ERS) mode. • Garage shifts (Park to Reverse or Drive) (Sales Code EHB). • Poor 3-1 downshift quality when coasting to a stop (Sales Code ED6). • 3-2 downshift delay while driving on inclines. • Overall coastdown shift quality. • Throttle response and performance feel. • Management and prevention of busy shifting. • Lift foot/change mind shift quality.

Owners of these vehicles have filed 1,472 complaints in the transmission category.