New TCM module A40/A46/T14A for 2006-2008 LLY, LBZ and LMM

Brand new AC Delco TCM pre programmed to your VIN. Just install and go.

Requires core shipped in advance.

Please note: I did not diagnose your truck. If the new unit does the same thing as the old unit then it’s a misdiagnosis, but the transaction is final as there are no returns on electronics once installed.

The new units WILL NOT work in the Kodiak medium duty trucks. The proper Operating System has never been developed by GM. Kodiaks must use the used A40 unit.