Mods, make this a sticky/tech FAQ? It seems some people did not receive a manual with their Security option.

For the "xA - Security with RKE" (Remote Keyless Entry)
I assume this is the same with xB, and possibly tC?

Programming
Driver's Door/All Doors Unlock Selection

The xA Security with RKE is factory-set to unlock the driver's door when the UNLOCK button is pressed on the remote control, then unlock the remaining doors when the UNLOCK button is pressed again within 3 seconds. You may change the programming so all doors will unlock at once when the UNLOCK button is pressed by following the steps below:
1. Before you begin: Open the driver's door. Remove the key from the ignition switch

2. Start the programming Procedure (Complete all these steps within 40 seconds)
A. Insert the key into and remove it from the ignition switch 2 times
B. Close, then open the driver's door 2 times
C. Insert the key into and remove it from the ignition switch 1 time
D. Close, then open the driver's door 2 times.
E. Insert the key into the ignition and leave it in.
F. Close the driver's door
G. Turn the key from LOCK to ON 4 times (ending at LOCK)
H. Remove the key from the ignition switch.
I. (Program mode Confirmation; you did everything correctly) The tail and marker lights flash 4 times, the buzzer chirps 4 times, and the doors lock and unlock 4 times

3. Select the operating mode and complete the programming procedure
A. Press and release both LOCK and UNLOCK buttons at the same time.
B. TO ENABLE ALL DOORS UNLOCK Press and release the UNLOCK button once for all doors unlock

OR

TO DISABLE FEATURE Press and release the LOCK button once for driver's door unlock only

C. The tail and marker lights flash 1time, the buzzer chirps 1 time, and the doors lock and unlock 1 time
Note: if the system lock the doors twice, start over.

E. Open the driver's door; programming is now complete

This took me 3-4 tries to do correctly. . . it DOES work.