Finally got around to adding the necessary switches in order to ENABLE or DISABLE on-the-fly either the very annoying triple-honk vehicle left on reminder (If you exit the vehicle left ON with the keyfob in your pocket) as well as the 2.5 hour auto-off timer that were both added to 2011-13 Volts following the reprogram of the K9 BCM performed during the N140617 recall.
Above are the switches used. Actually upgraded the horn-disable switch to LED type and tied the voltage feeding the LED to the S16 Driver Information Center Switch so that the intensity of the blue LED varies with Volt's LED Backlight Dimming Control. This horn-disable pushbutton also can be used to silence the charge confirmation single honk feedback.
The low-profile ON/OFF switch added can be toggled in order to create an open in the Key Capture/Column Lock Shift Position signal which the BCM interprets as the S3 Transmission Lever lefts out of the (P)ark postition thereby disabling the 2.5 hour auto-off timer if desired!
Please PM me if you want more info regarding these mods!