Customer Service Program. Certain vehicles were equipped with radios set to ?DEV Mode? at the supplier and shipped to the GM LDT (Lansing Delta Township) vehicle assembly plant. Radios in ?DEV Mode? will be on when the vehicle is ?OFF? and the vehicle battery will experience a drain. Dealers will turn vehicle on and inspect for ?DEV Mode? on the radio display. If ?DEV Mode? appears on the radio display, they will replace the existing radio with a new radio and program the new radio.
