TSB Document:

Affected Component: POWER TRAIN

Summary
A/T WARNING LIGHT IS ON WITHOUT PAST OR CURRENT DTC STORED IF YOU CONFIRM The Automatic Transmission check warning light is ON, AND There are no TCM related DTCs stored that are PAST or CURRENT. ACTION 1. Confirm the current TCM part number. 2. Reprogram the TCM, if applicable. 3. Drive the vehicle and complete a transmission drive cycle. 4. Confirm that the A/T warning light does not come back ON.  See the Repair Overview on page 2.

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Date Published
SEP 14, 2021
NHTSA TSB #
10202269
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