GMC Yukon 2025 - Page 201

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-17942154) - 2025
200 Driving and Operating
Warning (Continued)
•
Pl
ug 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.
•
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.
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
at each use.
3. Remove the engine heater connector cover
by gently prying the small notch with a flat
blade tool.
4. Plug the heater cord into the connector in
the front bumper.
5. Plug the cord into agrounded 110-volt AC
outlet that is protected by aground fault
detection function.
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.