GMC YUKON DENALI 2010 Owners Manual

To adjust the vertical aim:1. Open the hood. See Hood Release on page 6‑12
2. Locate the aim dot on the lens of the low‐beam
headlamp.
3. Record the distance from the ground to the aim dot on the low‐beam headlamp.
4. At a wall, measure from the ground upward (A) tothe recorded distance from Step 3 and mark it.
5. Draw or tape a horizontal line (B) on the wall the width of the vehicle at the height of the mark in
Step 4.
Notice: Do not cover a headlamp to improve beam
cut-off when aiming. Covering a headlamp may
cause excessive heat build-up which may cause
damage to the headlamp.
6. Turn on the low-beam headlamps and place a piece of cardboard or equivalent in front of the
headlamp not being adjusted. This allows only the
beam of light from the headlamp being adjusted to
be seen on the flat surface.
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7. Locate the vertical headlamp aiming screws, whichare under the hood near each headlamp assembly.
The adjustment screw can be turned with an
E8 Torx
®socket.
8. Turn the vertical aiming screw until the headlamp beam is aimed to the horizontal tape line. Turn it
clockwise or counterclockwise to raise or lower the
angle of the beam.
9. Make sure that the light from the headlamp is
positioned at the bottom edge of the horizontal
tape line. The lamp on the left (A) shows the
correct headlamp aim. The lamp on the right (B)
shows the incorrect headlamp aim.
10. Repeat Steps 7 through 9 for the opposite headlamp.
Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 6‑54.
For any bulb changing procedure not listed in this
section, contact your dealer/retailer.
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Halogen Bulbs
{WARNING:
Halogen bulbs have pressurized gas inside and
can burst if you drop or scratch the bulb. You or
others could be injured. Be sure to read and
follow the instructions on the bulb package.
Taillamps, Turn Signal, Stoplamps
and Back-up Lamps
A. Stoplamp/Taillamp
B. Turn Signal/Taillamp
C. Back-up Lamp To replace one of these bulbs:
1. Remove the two
screws from the
taillamp assembly.
2. Remove the taillamp assembly.
3. Press the release tab, if equipped, and turn the socket counterclockwise to remove it from the
taillamp assembly.
4. Pull the old bulb straight out from the socket.
5. Press a new bulb into the socket, insert the socket into the taillamp assembly and turn the socket
clockwise into the taillamp assembly until it clicks.
6. Reinstall the taillamp assembly.
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License Plate Lamp
1. Remove the two screws holding each of thelicense plate lamps to the molding that is part of
the liftgate.
2. Twist and pull the license plate lamp forward through the molding opening. 3. Turn the bulb socket counterclockwise and pull the
bulb straight out of the socket.
4. Install the new bulb.
5. Reverse Steps 1 through 3 to reinstall the license plate lamp.
Replacement Bulbs
Exterior Lamp Bulb Number
Back-up Lamp 7441
License Plate Lamp W5W
Rear Turn Signal Lamp, Taillamp, and
Stoplamp 7443
For replacement bulbs not listed here, contact your
dealer/retailer.
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Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for wear
or cracking. SeeScheduled Maintenance on page 7‑3.
Replacement blades come in different types and are
removed in different ways. To replace the wiper blade
assembly: 1. Pull the windshield wiper arm connector away from the windshield.
2. Squeeze the grooved areas on each side of the
blade, and turn the blade assembly away from the
arm connector.
3. Install the new blade onto the arm connector andmake sure the grooved areas are fully set in the
locked position.
For the proper type and size, see Maintenance
Replacement Parts on page 7‑13.
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Backglass Wiper Blade Replacement
1. Lift the wiper blade assembly up and out of thepark rest position.
2. Pull the wiper blade assembly away from thebackglass. The backglass wiper blade will not lock
in a vertical position, so care should be used when
pulling it away from the vehicle.
3. Turn the wiper blade assembly, and pull it off of the wiper arm. Hold the wiper arm in position and push
the blade away from the wiper arm.
4. Replace the wiper blade.
5. Return the wiper blade assembly to the park restposition.
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Tires
Your new vehicle comes with high-quality tires
made by a leading tire manufacturer. If you ever
have questions about your tire warranty and
where to obtain service, see your vehicle
Warranty booklet for details. For additional
information refer to the tire manufacturer.
{WARNING:
.Poorly maintained and improperly used
tires are dangerous.
.Overloading your tires can cause
overheating as a result of too much
flexing. You could have an air-out and a
serious accident. SeeLoading the Vehicle
on page 5‑31.
(Continued)
WARNING: (Continued)
.Underinflated tires pose the same danger
as overloaded tires. The resulting
accident could cause serious injury.
Check all tires frequently to maintain the
recommended pressure. Tire pressure
should be checked when your tires are
cold. SeeInflation - Tire Pressure
on
page 6‑64
.
.Overinflated tires are more likely to be
cut, punctured, or broken by a sudden
impact —such as when you hit a
pothole. Keep tires at the recommended
pressure.
.Worn, old tires can cause accidents.
If your tread is badly worn, or if your tires
have been damaged, replace them.
See High-Speed Operation
on page 6‑66for
inflation pressure adjustment for high speed
driving.
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20‐Inch Tires
If your vehicle has the optional 20‐inch
P275/55R20 size tires, they are classified as
touring tires and are designed for on road use.
The low‐profile, wide tread design is not
recommended for off‐road driving. SeeOff-Road
Driving
on page 5‑12, for additional information.
Tire Sidewall Labeling
Useful information about a tire is molded into the
sidewall. The following illustration is an example
of a typical P‐Metric tire sidewall.
Passenger (P‐Metric) Tire
(A) Tire Size:The tire size code is a combination
of letters and numbers used to define a particular
tire's width, height, aspect ratio, construction type,
and service description. See the “Tire Size”
illustration later in this section for more detail.
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(B) TPC Spec (Tire Performance Criteria
Specification)
:Original equipment tires designed
to GM's specific tire performance criteria have a
TPC specification code molded onto the sidewall.
GM's TPC specifications meet or exceed all
federal safety guidelines.
(C) DOT (Department of Transportation)
:
The Department of Transportation (DOT) code
indicates that the tire is in compliance with the
U.S. Department of Transportation Motor Vehicle
Safety Standards.
(D) Tire Identification Number (TIN)
:The letters
and numbers following DOT code are the Tire
Identification Number (TIN). The TIN shows the
manufacturer and plant code, tire size, and date
the tire was manufactured. The TIN is molded
onto both sides of the tire, although only one side
may have the date of manufacture. (E) Tire Ply Material
:The type of cord and
number of plies in the sidewall and under the
tread.
(F) Uniform Tire Quality Grading (UTQG)
:Tire
manufacturers are required to grade tires based
on three performance factors: treadwear, traction,
and temperature resistance. For more information,
see Uniform Tire Quality Grading
on page 6‑76.
(G) Maximum Cold Inflation Load Limit
:
Maximum load that can be carried and the
maximum pressure needed to support that load.
For information on recommended tire pressure
see Inflation - Tire Pressure
on page 6‑64and
Loading the Vehicle
on page 5‑31.
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Tire Size
The following examples show the different parts of
a tire size.
Passenger (P‐Metric) Tire
(A) Passenger (P‐Metric) Tire:The United
States version of a metric tire sizing system.
The letter P as the first character in the tire size
means a passenger vehicle tire engineered to
standards set by the U.S. Tire and Rim
Association.
(B) Tire Width
:The three‐digit number indicates
the tire section width in millimeters from sidewall
to sidewall. (C) Aspect Ratio
:A two‐digit number that
indicates the tire height‐to‐width measurements.
For example, if the tire size aspect ratio is 75, as
shown in item C of the light truck (LT‐Metric) tire
illustration, it would mean that the tire's sidewall is
75% as high as it is wide.
(D) Construction Code
:A letter code is used to
indicate the type of ply construction in the tire.
The letter R means radial ply construction; the
letter D means diagonal or bias ply construction;
and the letter B means belted‐bias ply
construction.
(E) Rim Diameter
:Diameter of the wheel in
inches.
(F) Service Description
:These characters
represent the load index and speed rating of the
tire. The load index represents the load carry
capacity a tire is certified to carry. The speed
rating is the maximum speed a tire is certified to
carry a load.
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