2008 GMC YUKON DENALI lane assist

Convex Mirror
{CAUTION:
A convex mirror can make things (like other
vehicles) look farther away than they really are.
If you cut too sharply into the right lane, you
could hit a vehicle on your right. Check your
inside mirror or glance over your shoulder
before changing lanes.
The passenger’s side mirror may have convex glass.
A convex mirror’s surface is curved so more can
be seen from the driver’s seat.
Your vehicle has a turn signal indicator on the mirror.
An arrow on the mirror will ash in the direction of
the turn or lane change.
Object Detection Systems
Ultrasonic Rear Parking
Assist (URPA)
If your vehicle has the Ultrasonic Rear Parking Assist
(URPA) system, it helps you park easier and avoid other
vehicles while in REVERSE (R). It operates at speeds
less than 5 mph (8 km/h). It can determine how close
objects are to the rear bumper, up to 8 feet (2.5 m)
behind your vehicle. The distance sensors are located
on the rear bumper.
2-44

Hill and Mountain Roads
Driving on steep hills or through mountains is different
than driving on at or rolling terrain. Tips for driving
in these conditions include:
Keep your vehicle serviced and in good shape.
Check all uid levels and brakes, tires, cooling
system, and transmission.
Going down steep or long hills, shift to a
lower gear.
{CAUTION:
If you do not shift down, the brakes could get
so hot that they would not work well. You
would then have poor braking or even none
going down a hill. You could crash. Shift down
to let the engine assist the brakes on a steep
downhill slope.
{CAUTION:
Coasting downhill in NEUTRAL (N) or with the
ignition off is dangerous. The brakes will have
to do all the work of slowing down and they
could get so hot that they would not work well.
You would then have poor braking or even
none going down a hill. You could crash.
Always have the engine running and your
vehicle in gear when you go downhill.
Stay in your own lane. Do not swing wide or cut
across the center of the road. Drive at speeds
that let you stay in your own lane.
Top of hills: Be alert — something could be in your
lane (stalled car, accident).
Pay attention to special road signs (falling rocks
area, winding roads, long grades, passing or
no-passing zones) and take appropriate action.
SeeOff-Road Driving on page 4-13for information
about driving off-road.
4-28

Retained Accessory Power (RAP)......................2-27
Roadside
Assistance Program....................................... 7-6
Rocking Your Vehicle to Get it Out....................4-32
Routing, Engine Drive Belt...............................6-15
Running Boards, Power...................................2-18
Running the Engine While Parked.....................2-39
S
Safety Belt
Reminder Light............................................3-33
Safety Belts
Care of....................................................5-101
How to Wear Safety Belts Properly................1-33
Lap Belt.....................................................1-47
Lap-Shoulder Belt........................................1-41
Safety Belt Extender....................................1-48
Safety Belt Use During Pregnancy.................1-47
Safety Belts Are for Everyone.......................1-28
Safety Warnings and Symbols.............................. iii
Scheduled Maintenance..................................... 6-4
Seats
60/40 Split Bench Seat.................................. 1-9
Bucket Seats, Rear......................................1-16
Head Restraints............................................ 1-8
Heated Seats............................................... 1-4
Heated Seats - Rear..................................... 1-9
Memory, Mirrors and Pedals........................... 1-4Seats (cont.)
Power Lumbar.............................................. 1-3
Power Reclining Seatbacks............................. 1-6
Power Seats................................................. 1-2
Third Row Seat...........................................1-23
Secondary Latch System.................................5-90
Securing a Child Restraint
Center Front Seat Position............................1-71
Rear Seat Position......................................1-68
Right Front Seat Position..............................1-71
Security Light.................................................3-46
Service........................................................... 5-3
Accessories and Modications......................... 5-3
Adding Equipment to the Outside of Your
Vehicle..................................................... 5-4
California Pershlorate Materials Requirements . . . 5-4
California Proposition 65 Warning.................... 5-3
Doing Your Own Work................................... 5-4
Engine Soon Light.......................................3-42
Publications Ordering Information...................7-14
Service, Scheduling Appointments....................... 7-8
Servicing Your Airbag-Equipped Vehicle..............1-90
Sheet Metal Damage.....................................5-105
Shifting Into Park (P).......................................2-36
Shifting Out of Park (P)...................................2-37
Signals, Turn and Lane-Change.......................... 3-8
Spare Tire.....................................................5-98
Installing....................................................5-85
Removing...................................................5-79
11

Tires (cont.)
Ination - Tire Pressure................................5-60
Inspection and Rotation................................5-67
Installing the Spare Tire................................5-85
Pressure Monitor Operation...........................5-64
Pressure Monitor System..............................5-62
Removing the Flat Tire.................................5-85
Removing the Spare Tire and Tools...............5-79
Secondary Latch System..............................5-90
Spare Tire..................................................5-98
Storing a Flat or Spare Tire and Tools............5-94
Tire Sidewall Labeling..................................5-56
Tire Terminology and Denitions....................5-58
Uniform Tire Quality Grading.........................5-72
Wheel Alignment and Tire Balance.................5-74
Wheel Replacement.....................................5-74
When It Is Time for New Tires......................5-69
Tow/Haul Mode...............................................2-34
Tow/Haul Mode Light.......................................3-47
Towing
Recreational Vehicle.....................................4-40
Towing a Trailer..........................................4-42
Your Vehicle...............................................4-40
Traction
Locking Differential........................................ 4-5
StabiliTrak
®System....................................... 4-6Trailer
Recommendations.......................................4-55
Transmission
Fluid, Automatic...........................................5-20
Transmission Operation, Automatic....................2-30
Trip Odometer................................................3-33
Turn and Lane-Change Signals.......................... 3-8
Turn Signal/Multifunction Lever........................... 3-8
U
Ultrasonic Rear Parking Assist (URPA)...............2-44
Uniform Tire Quality Grading............................5-72
Universal Home Remote System.......................2-50
Operation...................................................2-51
Using this Manual............................................... iii
V
Vehicle
Control........................................................ 4-3
Damage Warnings........................................... iv
Loading......................................................4-34
Symbols......................................................... iv
Vehicle Customization, DIC..............................3-64
13