SILVERADO ALLISON DURAMAX T14A A40 TRANSMISSION CONTROL UNIT TCU MODULE 24256864 Featured Products There may be small chips

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

If you would like to send your core back for a $30 partial refund please let us know during checkout *message to seller* box and we will include a prepaid return label with your order

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

4L34-10849-CM - Please match this

One mounting point is chipped however this unit sits in a cradle so this shouldn't effect install

SILVERADO ALLISON DURAMAX T14A A40 TRANSMISSION CONTROL UNIT TCU MODULE 24256864 Featured Products There may be small chipsPart 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