SILVERADO ALLISON DURAMAX T14A A40 TRANSMISSION CONTROL UNIT TCU MODULE 24256864 Featured Products Some of those tests are

Some of those tests are listed below: All stepper motors that failed testing were replaced and then tested again with oem diagnostic tool capable of sweeping the needles as if in the vehicle

68103811AN

05035667AA

68058128AC

There may be small chips in the connector plastic but the lock tabs are in place

SILVERADO ALLISON DURAMAX T14A A40 TRANSMISSION CONTROL UNIT TCU MODULE 24256864 Featured Products Some of those tests arePart Number 24256864 you must match this! This TCU will require programming to your vehicle. The truck this TCU came out of may not have the same shift schedules as your truck even though the part # match so please make sure you have a mechanic ready to go for programming before purchasing. Fitment Interchange This tcu will interchange or replace the following part numbers: 24261308. Please use the part number to verify fitment with your mechanic