GMC Sierra Denali 2500HD 2014 Owner's Manual page 384

GMC Sierra Denali 2500HD and 3500HD (GMNA-Localizing-U.S./Canada-
7142957) - 2014 - CRC 1st Edition - 3/28/13
10-70 Vehicle Care
3. Use the wheel wrench to loosen
all the wheel nuts. Turn the
wheel wrench counterclockwise
to loosen the wheel nuts. Do not
remove the wheel nuts yet.
Warning
Getting under a vehicle when it is
lifted on a jack is dangerous.
If the vehicle slips off the jack,
you could be badly injured or
killed. Never get under a vehicle
when it is supported only by
a jack.
Warning
Raising the vehicle with the jack
improperly positioned can
damage the vehicle and even
make the vehicle fall. To help
avoid personal injury and vehicle
damage, be sure to fit the jack lift
head into the proper location
before raising the vehicle.
4. Position the jack under the
vehicle. If the flat tire is on the
front of the vehicle, position the
jack on the frame behind the
flat tire.
If the flat tire is on the rear,
position the jack under the rear
axle between the spring anchor
and the shock absorber bracket.
Black plate (70,1)
Front Position
Rear Position