GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/13/22
Driving and Operating 299
.Trailer Width: 120 cm (47.2 in)–260 cm
(102.3 in). Measure from the left edge of
the trailer to the right edge.
.Trailer Height: 1 cm (0.39 in) –450 cm
(177.1 in). Measure from the ground to
tallest point of the trailer.
.Hitching Point Length: 180 cm (70.8 in) –
970 cm (381.8 in). Measure from the
center of the coupler to the middle of
tires.
.Trailer Tongue Length: 50 cm (19.6 in) –
220 cm (86.6 in). Measure from the center
of the coupler to the trailer front wall if
trailer has a flat front. If it does not have
a flat front, measure from the center of
the coupler to the point where the taper
meets the full width of the trailer.
.Vehicle Hitch Height: 10 cm (3.9 in) –
100 cm (39.3 in). Measure from the
ground to the top of coupler.
.Vehicle Hitch Length: 10 cm (3.9 in) –
100 cm (39.3 in). Measure from the hitch
receiver to the center of ball.
Dimensions for a bed hitch (gooseneck or
fifth wheel) trailer:
.Trailer Length: 300 cm (118.1 in) –2500 cm
(984.2 in). Measure from the front bottom
corner of the trailer to the furthest rear
point of the trailer.
.Trailer Box Width: 3 cm (1 in) –300 cm
(118.1 in). Measure the flat width at the
front bottom corners of the trailer.
.Hitching Point Length: 3 cm (1 in) –
1524 cm (600 in). Measure from the center
of the king pin (for fifth wheel) or coupler
(for gooseneck) to the middle of tires.
.Vehicle Cab to Trailer Length: 3 cm (1 in) –
610 cm (240.2 in). Measure from the back
of the vehicle cab to the front bottom
corner of the trailer.
.Vehicle Cab to Hitch Length: 3 cm (1 in) –
305 cm (120.1 in). Measure from the back
of vehicle cab to the center of the king
pin (for fifth wheel) or coupler (for
gooseneck).
Rear Trailer Guidance Setup
If equipped, a rear trailer camera must be
mounted on the trailer and electrically
connected to the vehicle before rear trailer
guidance feature can be used. See Assistance
Systems for Parking or Backing 0253.
Follow the on-screen instructions to enter
trailer dimensions.
Trailer dimensions must be in range to
enable this feature.
.Trailer Length: 300 cm (118.1 in) –1300 cm
(511.8 in). Measure from center of coupler
to furthest rear point on the trailer.
1. If trailer dimensions are out of range, this feature will be unavailable.
2. Ensure rear trailer camera is connected.
3. Follow the on-screen instructions to drive forward to complete calibration.
Jack-Knife Alert Setup
If equipped, follow the on-screen instructions
to drive forward to complete calibration.
Trailer Length Indicator Setup
If equipped, follow the on-screen instructions
to drive forward to complete calibration.
Trailer Side Blind Zone Alert Setup
If equipped, trailer dimensions must be in
range to enable this feature.
Follow the on-screen instructions to enter
trailer dimensions.
.Trailer Length: 300 cm (118.1 in) –1200 cm
(472.4 in). Measure from center of coupler
to furthest rear point on the trailer.
.Vehicle Hitch Length: 10 cm (3.9 in) –
100 cm (839.3 in). Measure from the hitch
receiver to the center of ball.
GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
Vehicle Care 331
Park Brake and P (Park)
Mechanism Check
{Warning
When you are doing this check, the
vehicle could begin to move. You or
others could be injured and property
could be damaged. Make sure there is
room in front of the vehicle in case it
begins to roll. Be ready to apply the
regular brake at once should the vehicle
begin to move.
Park on a fairly steep hill, with the vehicle
facing downhill. Keeping your foot on the
regular brake, set the parking brake.
.To check the parking brake's holding
ability: With the engine running and the
transmission in N (Neutral), slowly remove
foot pressure from the regular brake
pedal. Do this until the vehicle is held by
the parking brake only.
.To check the P (Park) mechanism's holding
ability: With the engine running, shift to
P (Park). Then release the parking brake
followed by the regular brake.
Contact your dealer if service is required.
Wiper Blade Replacement
Windshield wiper blades should be replaced
periodically. See Maintenance Schedule
0 394.
Replacement blades come in different types
and are removed in different ways. For
proper type and length, see Maintenance
Replacement Parts 0399.
Caution
Allowing the wiper arm to touch the
windshield when no wiper blade is
installed could damage the windshield.
Any damage that occurs would not be
covered by the vehicle warranty. Do not
allow the wiper arm to touch the
windshield.
Front Wiper Blade Replacement
To replace the wiper blade:
1. Pull the wiper assembly away from the windshield.
2. Lift up on the latch in the middle of the
wiper blade where the wiper arm
attaches.
3. With the latch open, pull the wiper blade down toward the windshield far enough
to release it from the J-hooked end of
the wiper arm.
4. Remove the wiper blade.
5. Reverse Steps 1–3 for wiper blade replacement.
Glass Replacement
If the windshield or front side glass must be
replaced, see your dealer to determine the
correct replacement glass.
