Apo Operating Modes - GMC Hybrid 2006 Owner's Manual

The Ground Fault Detection (GFD) system checks for
leakage current to ground, or the truck frame, that could
potentially be a shock hazard, in much the same way as
the Ground Fault Circuit Interrupt (GFCI) outlets protect
you in your home. The GFD self-test is automatically
performed during the activation of the APO system.
Thereafter, if the GFD system detects a significant
leakage current, it will immediately shut down the outlets
and the light next to the APO button will flash, while at
the same time a 120V GROUND FAULT message will
appear in the DIC. If this happens, unplug all electrical
devices and reset the system by pressing the APO
button. Then plug in each electrical device individually
until the malfunctioning extension cord or electrical
device is identified.
If, after unplugging all electrical devices and cords and
resetting the system, either the 120V OVERLOAD
message or the 120V GROUND FAULT message
continues to be displayed, have the vehicle serviced.

APO Operating Modes

The APO system is capable of being operated in
two different modes:
•
Normal mode: This is used while the vehicle
is running and in PARK (P), the vehicle is in
Auto-Stop mode, or the vehicle is moving.
•
Continuous mode: This is used while the vehicle
is parked.
2-4
Normal Mode
This mode can be activated while in any transmission
gear position to supply the outlets with 2,400 watts
of 120-volt AC power.
To activate the normal mode do the following:
1. Start the engine. See "Starting Your Engine" in
the owner manual Index.
The light next to the APO button will come on,
indicating that the system is supplying 120-volt
AC power to the outlets.
3. Connect your electrical/electronic device(s) to the
outlets. Be sure the device(s) is secure so you can
drive the vehicle safely. If you must use extension
cords, be sure to use only UL
extension cords.
2. Press and release the
APO button, located on
the instrument panel,
once. Do not hold the
APO button for more
than two seconds.
®
approved