Retained Accessory Power (Rap) - GMC Sierra 2500 HD2022 Owner's Manual

232 Driving and Operating
To Use the Engine Heater
1. Turn off the engine.
2. Check the heater cord for damage. If it is
damaged, do not use it. See your dealer
for a replacement. Inspect the cord for
damage yearly.
3. Plug the heater cord into the connector
in the front fascia.
4. Plug the cord into a grounded 110-volt
AC outlet that is protected by a ground
fault detection function.
Warning
Improper use of the heater cord or an
extension cord can damage the cord and
may result in overheating and fire.
Plug the cord into a three-prong
electrical utility receptacle that is
protected by a ground fault detection
function. An ungrounded outlet could
cause an electric shock.
Use a weatherproof, heavy-duty,
15 amp-rated extension cord if needed.
Failure to use the recommended
extension cord in good operating
condition, or using a damaged heater
or extension cord, could make it
overheat and cause a fire, property
damage, electric shock, and injury.
Do not operate the vehicle with the
heater cord permanently attached to
the vehicle. Possible heater cord and
thermostat damage could occur.
While in use, do not let the heater
cord touch vehicle parts or sharp
edges. Never close the hood on the
heater cord.
Warning (Continued)
Before starting the vehicle, unplug the
cord, reattach the cover to the plug,
and securely fasten the cord. Keep the
cord away from any moving parts.
5. Before starting the engine, be sure to
unplug and store the cord.
The length of time the heater should remain
plugged in depends on several factors. Ask a
dealer in the area where you will be parking
the vehicle for the best advice on this.

Retained Accessory Power (RAP)

When the ignition is turned from on to off,
the following features (if equipped) will
continue to function for up to 10 minutes,
or until the driver door is opened. These
features will also work when the ignition is
in RUN or ACC/ACCESSORY:
Infotainment System
Power Windows (during RAP this
functionality will be lost when any door
is opened)
Sunroof (during RAP this functionality will
(Continued)
be lost when any door is opened)
Auxiliary Power Outlet