How do I start the Enclave if the RKE transmitter battery is weak or dead?

If the transmitter battery is weak, the DIC may display NO REMOTE DETECTED or NO REMOTE KEY WAS DETECTED PLACE KEY IN TRANSMITTER POCKET THEN START YOUR VEHICLE. To start the vehicle, remove the top tray and rubber mat inside the center console storage area, place the transmitter into the transmitter pocket, then with the vehicle in P (Park) or N (Neutral), press the brake pedal and ENGINE START/STOP. Replace the transmitter battery as soon as possible. (Page 35)