wheel GMC SIERRA 1500 2012 Manual PDF

Black plate (60,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
9-60 Driving and Operating
Reducing Speed While Using
Cruise Control
If the cruise control system is
already activated,
.Press and hold the SET–button
on the steering wheel until the
desired lower speed is reached,
then release it.
.To slow down in small amounts,
press the SET– button on the
steering wheel briefly. Each time
this is done, the vehicle goes
about 1.6 km/h (1 mph) slower.
Passing Another Vehicle While
Using Cruise Control
Use the accelerator pedal to
increase the vehicle speed. When
you take your foot off the pedal,
the vehicle will slow down to the
previous set cruise speed.
Using Cruise Control on Hills
How well the cruise control works
on hills depends on the vehicle
speed, the load, and the steepness
of the hills. When going up steep hills, pressing the accelerator pedal
may be necessary to maintain
vehicle speed.
While going downhill:
.Vehicles with a four speed
automatic transmission may
need to have the brakes applied
or the transmission shifted
to a lower gear to keep the
speed down.
.Vehicles with a six speed
automatic transmission have a
Cruise Grade Braking feature
that may automatically shift to a
lower gear to keep the speed
down. It may be necessary to
apply the brake or manually
shift the transmission to a lower
gear. The vehicle may shift to a
higher gear when grade braking
assistance is no longer required.
Cruise Grade Braking is not
available while in Range
Selection Mode. This feature is
active when the exhaust brake
is enabled (if equipped). See
"Range Selection Mode" under
Manual Mode on page 9‑38.
When the brakes are manually
applied the cruise control is
disengaged.
Ending Cruise Control
There are three ways to end cruise
control:.To disengage cruise control;
step lightly on the brake pedal.
.Press[on the steering wheel.
.To turn off the cruise control,
press
Ion the steering wheel.
Erasing Speed Memory
The cruise control set speed
is erased from memory by
pressing
Ior if the ignition is
turned off.

Black plate (64,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
9-64 Driving and Operating
The delay after shifting out of
R (Reverse) is approximately
10 seconds. The delay can be
canceled by performing one of the
following:
.Pressing a hard key on the
navigation system.
.Shifting into P (Park).
.Reaching a vehicle speed of
8 km/h (5 mph).
Adjusting the Brightness and
Contrast of the Screen
To adjust the brightness and
contrast of the screen, press the
MENU button while the RVC image
is on the display. Any adjustments
made will only affect the RVC
screen.
](Brightness): Touch the + (plus)
or –(minus) screen buttons to
increase or decrease the brightness
of the screen.
_(Contrast): Touch the + (plus)
or –(minus) screen buttons to
increase or decrease the contrast of
the screen.
Symbols
The navigation system may have a
feature that allows for viewing
parking assist symbols on the
navigation screen while using the
RVC. The Ultrasonic Rear Park
Assist (URPA) system must not be
disabled to use the caution symbols.
If URPA has been disabled and the
symbols have been turned on,
the Rear Parking Assist Symbols
Unavailable error message may
display. See Ultrasonic Parking
Assist on page 9‑61.
The symbols appear near objects
detected by the URPA system. The
symbol may cover the object when
viewing the navigation screen.
To turn the symbols on or off:
1. Make sure that URPA has not been disabled.
2. Shift into P (Park). 3. Press MENU to enter the
configure menu options. Turn
the Multifunction knob until the
Display feature is highlighted
and press the Multifunction
knob. Or press the Display
screen button
4. Select the Rear Camera Options screen button. The Rear Camera
Options screen displays.
5. Touch the Symbols screen button. The screen button will
be highlighted when on.
Guidelines
The RVC system has a guideline
overlay that can help the driver align
the vehicle when backing into a
parking spot.
If the vehicle has dual rear wheels,
this feature will not be available.
To turn the guidelines on or off:
1. Make sure that URPA has not been disabled.
2. Shift into P (Park).

Black plate (76,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
9-76 Driving and Operating
Backing Up
Hold the bottom of the steering
wheel with one hand. To move the
trailer to the left, move that hand to
the left. To move the trailer to the
right, move your hand to the right.
Always back up slowly and,
if possible, have someone
guide you.
Making Turns
Notice:Making very sharp turns
while trailering could cause the
trailer to come in contact with the
vehicle. The vehicle could be
damaged. Avoid making very
sharp turns while trailering.
When turning with a trailer, make
wider turns than normal. Do this
so the trailer will not strike soft
shoulders, curbs, road signs, trees,
or other objects. Avoid jerky or
sudden maneuvers. Signal well in
advance. If the trailer turn signal bulbs burn
out, the arrows on the instrument
panel will still flash for turns. It is
important to check occasionally to
be sure the trailer bulbs are still
working.
Driving on Grades
Reduce speed and shift to a
lower gear
beforestarting down a
long or steep downgrade. If the
transmission is not shifted down, the
brakes might get hot and no longer
work well.
Vehicles can tow in D (Drive). Shift
the transmission to a lower gear if
the transmission shifts too often
under heavy loads and/or hilly
conditions.
The Tow/Haul Mode may be used if
the transmission shifts too often.
See Tow/Haul Mode on page 9‑39.
When towing at high altitude on
steep uphill grades, consider the
following: Engine coolant will boil at
a lower temperature than at normal
altitudes. If the engine is turned off immediately after towing at high
altitude on steep uphill grades, the
vehicle may show signs similar to
engine overheating. To avoid this,
let the engine run while parked,
preferably on level ground, with the
automatic transmission in P (Park)
for a few minutes before turning the
engine off. If the overheat warning
comes on, see
Engine Overheating
on page 10‑22.
Parking on Hills
{WARNING
Parking the vehicle on a hill
with the trailer attached can be
dangerous. If something goes
wrong, the rig could start to move.
People can be injured, and both
the vehicle and the trailer can be
damaged. When possible, always
park the rig on a flat surface.

Black plate (77,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Driving and Operating 9-77
If parking the rig on a hill:
1. Press the brake pedal, but donot shift into P (Park) yet. Turn
the wheels into the curb if facing
downhill or into traffic if facing
uphill.
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, release the regular brakes
until the chocks absorb the load.
4. Reapply the brake pedal. Then apply the parking brake and shift
into P (Park).
5. If the vehicle is four-wheel-drive, be sure the transfer case is in a
drive gear and not in N (Neutral).
6. Release the brake pedal.{WARNING
It can be dangerous to get out of
the vehicle if the shift lever is not
fully in P (Park) with the parking
brake firmly set. The vehicle
can roll.
If the engine has been left
running, the vehicle can move
suddenly. You or others could be
injured. To be sure the vehicle will
not move, even when on fairly
level ground, use the steps that
follow.
Always put the shift lever fully in
P (Park) with the parking brake
firmly set. (Continued)
WARNING (Continued)
If the transfer case on a
four-wheel-drive vehicle is in
N (Neutral), the vehicle will be
free to roll, even if the shift lever
is in P (Park). Be sure the transfer
case is in a drive gear —not in
N (Neutral).
Leaving After Parking on a Hill
1. Apply and hold the brake pedal.
2. Start the engine.
3. Shift into a gear.
4. Release the parking brake.
5. Let up on the brake pedal.
6. Drive slowly until the trailer is clear of the chocks.
7. Stop and have someone pick up and store the chocks.

Black plate (80,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
9-80 Driving and Operating
Use the following chart to determine how much the vehicle can weigh, based upon the vehicle model and options.
Weights listed apply for conventional trailers and fifth-wheel trailers unless otherwise noted.Vehicle Axle Ratio Maximum Trailer Weight GCWR (a)
1500 Series 2WD Regular Cab Standard Box
4.3L V6 (b) 3.232 177 kg (4,800 lbs) 4 309 kg (9,500 lbs)
4.3L V6 —With Automatic
Transmission (b) 3.73
2 449 kg (5,400 lbs) 4 536 kg (10,000 lbs)
4.3L V6 —With Manual
Transmission (b) 3.73
1 860 kg (4,100 lbs) 3 938 kg (8,683 lbs)
4.8L V8 (b) 3.232 132 kg (4,700 lbs) 4 309 kg (9,500 lbs)
4.8L V8 (b) 3.733 266 kg (7,200 lbs) 5 443 kg (12,000 lbs)
5.3L LMG V8 (b) 3.082 994 kg (6,600 lbs) 5 216 kg (11,500 lbs)
5.3L LMG V8, K5L HD
Cooling Pkg 3.08
3 357 kg (7,400 lbs) 5 534 kg (12,200 lbs)
5.3L LMG V8 K5L HD Cooling Pkg 3.42 4 128 kg (9,100 lbs) 6 350 kg (14,000 lbs)
1500 Series 2WD Extended Cab Standard Box 4.3L V6 (b) 3.231 996 kg (4,400 lbs) 4 309 kg (9,500 lbs)
4.8L V8 (b) 3.232 132 kg (4,700 lbs) 4 536 kg (10,000 lbs)
4.8L V8 (b) 3.733 039 kg (6,700 lbs) 5 443 kg (12,000 lbs)

Black plate (81,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Driving and Operating 9-81
VehicleAxle Ratio Maximum Trailer Weight GCWR (a)
5.3L V8 (b) 3.082 812 kg (6,200 lbs) 5 216 kg (11,500 lbs)
5.3L V8 K5L HD Cooling Pkg (b) 3.083 130 kg (6,900 lbs) 5 534 kg (12,200 lbs)
5.3L V8 K5L HD Cooling
Pkg —Conventional Trailer 3.42
4 400 kg (9,700 lbs) 6 804 kg (15,000 lbs)
5.3L V8 K5L HD Cooling
Pkg —Fifth-Wheel Trailer 3.42
4 264 kg (9,400 lbs) 6 804 kg (15,000 lbs)
6.2L V8 K5L HD Cooling
Pkg —Conventional Trailer 3.42
4 400 kg (9,700 lbs) 6 804 kg (15,000 lbs)
6.2L V8 K5L HD Cooling
Pkg —Fifth-Wheel Trailer 3.42
4 264 kg (9,400 lbs) 6 804 kg (15,000 lbs)
6.2L V8 NHT Max Trailering
Pkg —Conventional Trailer 3.73
4 853 kg (10,700 lbs) 7 257 kg (16,000 lbs)
6.2L V8 NHT Max Trailering
Pkg —Fifth-Wheel Trailer 3.73
4 808 kg (10,600 lbs) 7 257 kg (16,000 lbs)
1500 Series 2WD Crew Cab Short Box (b) 4.8L V8 3.232 132 kg (4,700 lbs) 4 536 kg (10,000 lbs)
4.8L V8 3.733 039 kg (6,700 lbs) 5 443 kg (12,000 lbs)
5.3L V8 (LMG) 3.082 812 kg (6,200 lbs) 5 216 kg (11,500 lbs)

Black plate (82,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
9-82 Driving and Operating
VehicleAxle Ratio Maximum Trailer Weight GCWR (a)
5.3L V8 (LMG) K5L HD
Cooling Pkg 3.08
3 130 kg (6,900 lbs) 5 534 kg (12,200 lbs)
5.3L V8 (LC9) XFE 3.083 175 kg (7,000 lbs) 5 534 kg (12,200 lbs)
5.3L V8 (LMG) K5L HD
Cooling Pkg 3.42
4 355 kg (9,600 lbs) 6 804 kg (15,000 lbs)
6.2L V8 K5L HD Cooling Pkg 3.424 400 kg (9,700 lbs) 6 804 kg (15,000 lbs)
6.2L V8 NHT Max Trailering Pkg 3.734 808 kg (10,600 lbs) 7 257 kg (16,000 lbs)
1500 Series 2WD Regular Cab Long Box 4.3L V6 (b) 3.232 132 kg (4,700 lbs) 4 309 kg (9,500 lbs)
4.3L V6 (b) 3.732 359 kg (5,200 lbs) 4 536 kg (10,000 lbs)
4.8L V8 (b) 3.232 313 kg (5,100 lbs) 4 536 kg (10,000 lbs)
4.8L V8 (b) 3.733 221 kg (7,100 lbs) 5 443 kg (12,000 lbs)
5.3L V8 3.082 948 kg (6,500 lbs) 5 216 kg (11,500 lbs)
5.3L V8 K5L HD Cooling Pkg 3.083 266 kg (7,200 lbs) 5 534 kg (12,200 lbs)
5.3L V8 K5L HD Cooling
Pkg —Conventional Trailer 3.42
4 536 kg (10,000 lbs) 6 804 kg (15,000 lbs)
5.3L V8 K5L HD Cooling
Pkg —Fifth-Wheel Trailer 3.42
4 037 kg (8,900 lbs) 6 804 kg (15,000 lbs)

Black plate (83,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Driving and Operating 9-83
VehicleAxle Ratio Maximum Trailer Weight GCWR (a)
1500 Series 2WD Extended Cab Long Box 5.3L V8 (b) 3.082 722 kg (6,000 lbs) 5 216 kg (11,500 lbs)
5.3L V8 K5L HD Cooling Pkg (b) 3.083 039 kg (6,700 lbs) 5 534 kg (12,200 lbs)
5.3L V8 K5L HD Cooling
Pkg —Conventional Trailer 3.42
4 309 kg (9,500 lbs) 6 804 kg (15,000 lbs)
5.3L V8 K5L HD Cooling
Pkg —Fifth-Wheel Trailer 3.42
4 082 kg (9,000 lbs) 6 804 kg (15,000 lbs)
1500 Series 4WD Regular Cab Standard Box 4.3L V6 (b) 3.732 313 kg (5,100 lbs) 4 536 kg (10,000 lbs)
4.8L V8 (b) 3.422 722 kg (6,000 lbs) 4 990 kg (11,000 lbs)
5.3L V8 (b) 3.082 903 kg (6,400 lbs) 5 216 kg (11,500 lbs)
5.3L V8 K5L HD Cooling Pkg 3.083 221 kg (7,100 lbs) 5 534 kg (12,200 lbs)
5.3L V8 K5L HD Cooling
Pkg —Conventional Trailer 3.42
4 037 kg (8,900 lbs) 6 350 kg (14,000 lbs)
5.3L V8 K5L HD Cooling
Pkg —Fifth-Wheel Trailer 3.42
3 719 kg (8,200 lbs) 6 350 kg (14,000 lbs)

Black plate (84,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
9-84 Driving and Operating
VehicleAxle Ratio Maximum Trailer Weight GCWR (a)
1500 Series 4WD Extended Cab Standard Box 4.8L V8 (b) 3.422 495 kg (5,500 lbs) 4 990 kg (11,000 lbs)
5.3L V8 (b) 3.082 767 kg (6,100 lbs) 5 216 kg (11,500 lbs)
5.3L V8 K5L HD Cooling Pkg (b) 3.083 084 kg (6,800 lbs) 5 534 kg (12,200 lbs)
5.3L V8 K5L HD Cooling
Pkg —Conventional Trailer 3.42
4 354 kg (9,600 lbs) 6 804 kg (15,000 lbs)
5.3L V8 K5L HD Cooling
Pkg —Fifth-Wheel Trailer 3.42
4 354 kg (9,600 lbs) 6 804 kg (15,000 lbs)
6.2L V8 K5L HD Cooling
Pkg —Conventional Trailer 3.42
4 264 kg (9,400 lbs) 6 804 kg (15,000 lbs)
6.2L V8 K5L HD Cooling
Pkg —Fifth-Wheel Trailer 3.42
4 128 kg (9,100 lbs) 6 804 kg (15,000 lbs)
6.2L V8 NHT Max Trailering
Pkg —Conventional Trailer 3.73
4 717 kg (10,400 lbs) 7 257 kg (16,000 lbs)
6.2L V8 NHT Max Trailering
Pkg —Fifth-Wheel Trailer 3.73
4 672 kg (10,300 lbs) 7 257 kg (16,000 lbs)
1500 Series 4WD Crew Cab Short Box (b) 4.8L V8 3.422 495 kg (5,500 lbs) 4 990 kg (11,000 lbs)
5.3L V8 3.082 722 kg (6,000 lbs) 5 216 kg (11,500 lbs)

Black plate (85,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Driving and Operating 9-85
VehicleAxle Ratio Maximum Trailer Weight GCWR (a)
5.3L V8 K5L HD Cooling Pkg 3.083 039 kg (6,700 lbs) 5 534 kg (12,200 lbs)
5.3L V8 K5L HD Cooling Pkg 3.424 309 kg (9,500 lbs) 6 804 kg (15,000 lbs)
6.2L V8 K5L HD Cooling Pkg 3.424 264 kg (9,400 lbs) 6 804 kg (15,000 lbs)
6.2L V8 NHT Max Trailering Pkg 3.734 717 kg (10,400 lbs) 7 257 kg (16,000 lbs)
1500 Series 4WD Regular Cab Long Box
4.3L V6 (b) 3.732 223 kg (4,900 lbs) 4 536 kg (10,000 lbs)
4.8L V8 (b) 3.422 631 kg (5,800 lbs) 4 990 kg (11,000 lbs)
5.3L V8 (b) 3.082 858 kg (6,300 lbs) 5 216 kg (11,500 lbs)
5.3L V8 K5L HD Cooling Pkg 3.083 175 kg (7,000 lbs) 5 534 kg (12,200 lbs)
5.3L V8 K5L HD Cooling
Pkg —Conventional Trailer 3.42
4 445 kg (9,800 lbs) 6 804 kg (15,000 lbs)
5.3L V8 K5L HD Cooling
Pkg —Fifth-Wheel Trailer 3.42
4 400 kg (9,700 lbs) 6 804 kg (15,000 lbs)
1500 Series 4WD Extended Cab Long Box 5.3L V8 (b) 3.082 631 kg (5,800 lbs) 5 216 kg (11,500 lbs)
5.3L V8 K5L HD Cooling Pkg (b) 3.082 948 kg (6,500 lbs) 5 534 kg (12,200 lbs)