Double pulse unlock change to single pulse unlock all doors

[lannvouivre]

I would really like to change the Toyota double pulse (one press to unlock driver's door, two to unlock all doors) unlock to a single pulse unlock all doors setup. Via http://www.the12volt.com/doorlocks/page4.asp" onclick="window.open(this.href);return false; , it is to my understanding that Toyota has accomplished this setup via relays. Anyone have any ideas of how to change this, since there seems to be no way to change to single pulse with programming of the car?

[XRVibe10]

On the 2009 & 2010's you can change this feature (along with a few others) with a Tech2 - Features you can change are:

Keyless Entry System Description and Operation Display
Default
Contents
Setting

Wireless Control
ON
ON / OFF of wireless door lock function.
ON / OFF

Hazard Answer Back
ON
When LOCK switch on transmitter is pressed, all hazard warning lights illuminate once. When UNLOCK switch is pressed, all hazard warning lights illuminate twice.
ON / OFF

Unlock 2 Operation
ON
Function that unlocks driver side door when UNLOCK switch on transmitter is pressed once, and unlocks all doors when pressed twice. If setting is OFF, pressing unlock switch once makes all door unlock.
ON / OFF

Panic Function
ON
Function operates the theft deterrent system when PANIC switch on transmitter is pressed and held for 0.8 seconds or more.
ON / OFF

Wireless Auto Lock
OFF
Function to control automatic relocking of doors after unlocking with wireless door lock function.
ON / OFF

Auto Lock Time
60 seconds
Function controls amount of time from unlocking doors to automatic re-locking function.
30 seconds, 60 seconds or 120 seconds

There doesn't seem to be any customizable features available for the 2003-2008 models (at least not listed thru GM)