key GMC YUKON DENALI 2003 Workshop Manual

A. Spare Tire (Valve Stem Pointed Up)
B. Hoist Assembly
C. Hoist Cable
D. Tire Retainer
E. Hoist Shaft
F. Hoist End of Extension Tool
G. Hoist Shaft Access Hole
H. Wheel Wrench
I. Jack Handle Extensions
J. Hoist Lock (If Equipped)
1. If your vehicle is equipped with a hoist lock (J),
open the spare tire lock cover on the bumper
and
use the ignition key to remove the lock.
2. Assemble the wheel wrench (H) and the two jack
handle extensions
(I) as shown.
5-66

Also look for any opened or broken air bag coverings,
and have them repaired or replaced. (The air bag
system does not need regular maintenance.)
Inspect wiper blades for wear or cracking. Replace
blade inserts that appear worn or damaged or that
streak or miss areas of the windshield.
Also see
Cleaning the Outside
of Your Vehicle on page 5-81.
Spare Tire Check
At least twice a year, after the monthly inflation check of
the spare tire determines that the spare is inflated
to
the correct tire inflation pressure, make sure that
the spare tire is stored securely. Push, pull, and then
try
to rotate or turn the tire. If it moves, use the wheel
wrenchhatchet
to tighten the cable. See Changing a Flat
Tire
on page 5-63.
Engine Air Cleaner Filter Restriction
Indicator Check
Your vehicle has an engine air cleaner filter restriction
indicator located on the air cleaner in the engine
compartment. The indicator lets you know when the air
cleaner filter is dirty and needs
to be changed. Check
the indicator at least twice a year or when your engine oil is changed,
whichever occurs first. See Engine Air
Cleaner/Filter
on page 5- 17 for more information. Inspect
your air cleaner filter restriction indicator more often
if
the vehicle is used in dusty areas or under off road
conditions.
Weatherstrip Lubrication
Silicone grease on weatherstrips will make them last
longer, seal better, and not stick or squeak. Apply
silicone grease with a clean cloth. During very cold,
damp weather more frequent application may be required. See
Part D: Recommended Fluids and
Lubricants
on page 6- 15.
Automatic Transmission Check
Check the transmission fluid level; add if needed. See
Automatic Transmission Fluid on page
5-20. A fluid loss
may indicate a problem. Check the system and repair
if needed.
At Least Once a Year
Key Lock Cylinders Service
Lubricate the key lock cylinders with the lubricant
specified in Part D.

Body Lubrication Service
Lubricate all hood latch assembly, secondary latch,
pivots, spring anchor, release pawl, door hinges, liftgate
hinge, liftgate linkage, liftgate handle pivot points, latch
bolt, fuel door hinge, locks and folding seat hardware.
Part
D tells you what to use. More frequent lubrication
may be required when exposed
to a corrosive
environment.
Star+nr Sw'+zh Check
ten you are doing this check, the v_--icle
could move suddenly.
If it does, you or others
could be injured. Follow the steps below.
3. Try to start the engine in each gear. The starter
should work only in PARK (P) or NEUTRAL (N).
If the starter works in any other position, your
vehicle needs service.
Automatic Transmission Shift Lock
Control System Check
1. Before you start, be sure you have enough room
2. Firmly apply both the parking brake and the regular
around
the vehicle.
brake. See Parking Brake on page
2-25 if
necessary.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
Whe.. IOU a1 - rloing this check, tt.- vehicle
could move suddenly.
If it does, you or others
could
be injured. Follow the steps below.
1. Before you start, be sure you have enough room
around the vehicle.
It should be parked on a level
surface.
2. Firmly apply the parking brake. See Parking Brake
on page 2-25 if necessary.
Be ready
to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the key to the RUN
position, but don't start the engine. Without applying
the regular brake, try to move the shift lever
out
of PARK (P) with normal effort. If the shift lever
moves out of PARK
(P), your vehicle needs service.
6-1 2

Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn
the ignition key
to LOCK in each shift lever position.
0 The key should turn to LOCK only when the
The key should come out only in LOCK.
shift
lever is in PARK (P).
Parking Brake and Automatic
Transmission Park
(P) Mechanism
Check
WI..,.J you are doin, ,his cl.,:k, your --hide
could begin to move. You or others could be
injured and property could be damaged. Make
sure there is room in front
of your 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 transmission in NEUTRAL
(N), slowly remove foot pressure from the regular
brake pedal. Do this until the vehicle is held by the
parking brake only.
0 To check the PARK (P) mechanism’s holding
ability: With the engine running, shift to PARK (P).
Then release the parking brake followed by the
regular brake.
Underbody Flushing Service
At least every spring, use plain water to flush any
corrosive materials from the underbody. Take care to
clean thoroughly any areas where mud and other debris
can collect.
6-1 3

Part D: Recommended Fluids and
Lubricants
Flyids and lubricants identified below by mme,
part number or specification may be obtained from
your dealer.
Usage
Engine Oil
Engine Coolant
Hydraulic Brake
System
Windshield
Washer Solvent
Fluid/Lubricant
Engine oil with the American
Petroleum Institute Certified for
Gasoline Engines starburst symbol
of the proper viscosity. To determine
the preferred viscosity for your
vehicle's engine, see Engine
Oil on
page
5- 13.
50/50 mixture of clean, drinkable
water and use only
DEX-COOL@Coolant. See Engine
Coolant on page
5-22.
Delco Supreme 1 l@ Brake Fluid or
equivalent
DOT-3 brake fluid.
GM Optikleen@Washer Solvent or
equivalent.
Usage
Power Steering System
Automatic
Transmission
Key Lock
Cylinders
Chassis
Lubrication
Front and
Rear Axle
Transfer Case
Fluid/Lubricant
GM Power Steering Fluid (GM Part No.
U.S. 1052884, in Canada
993294, or equivalent).
DEXRON@-Ill Automatic
Transmission Fluid.
Mulit-Purpose Lubricant, Superlube
(GM Part No.
U.S. 12346241 , in
Canada 10953474, or equivalent).
Chassis Lubricant (GM Part No.
U.S. 12377985, in Canada
88901242, or equivalent) or lubricant
meeting requirements of NLGl
#2,
Category LB or GC-LB.
SAE 75W-90 Synthetic Axle Lubricant (GM Part
No. U.S.
12378261, in Canada 10953455) or
equivalent meeting GM Specification
99861
15.
DEXRON@-Ill Automatic
Transmission Fluid.
6-1 5

GM Mobility Program for Persons
with Disabilities
This program, avaiiabie io
qualified applicants, can
reimburse you up
to
$1,000 toward aftermarket
driver or passenger
adaptive equipment you
may require for your
vehicle (hand controls,
wheelchair/scooter lifts, etc.).
I I
This program can also provide you with free resource
information, such as area driver assessment centers and
mobility equipment installers. The program is available
for a limited period of time from the date of vehicle
purchase/lease. See your dealer for more details or call
the GM Mobility Assistance Center at 1-800-323-9935.
Text telephone (TTY) users, call 1-800-833-9935.
GM of Canada also has a Mobility Program. Call
1-800-GM-DRIVE (463-7483) for details.
All TTY users
call 1-800-263-3830.
Roadside Assistance Program
GMC’s Roadside Assistance Provides stranded owners
with over-the-phone roadside repairs, location of the
nearest
GhlC dealer or the following special services:
Flat Tire Change: Installation of spare tire will be
covered at no charge (customer is responsible for repair
or replacement of tire).
Fuel Delivery: Delivery of enough fuel for the customer
to get to the nearest service station (up to $5.00)
will be covered.
Jump Start: No-start situations which require a battery
jump start will be covered at no charge.
Lock Out: Replacement keys or locksmith service will be
covered at no charge
if you are unable to gain entry
into your vehicle. Delivery of the replacement key will be
covered within
10 miles (16 km).
Emergency Towing Service: Towing
to the nearest GMC
dealer for warranty related disablements will be
covered.
Trip Routing: Custom-made, computerized highlighted
maps using the most direct or scenic route are provided
free of charge. Maps include points of interest and a
list of GMC dealers along the route. Also included is a
list of hotels along the route that are discounted
7-5

Inspection (cont.)
Instrument Panel
Steering
and Suspension
...............
Cluster ......................... .....................
Overview ..............................................
Instrument Panel Brightness ............................
Instrument Panel Fuse Block ...........................
Interior Lamps ...............................................
Interior Plastic Components .............................
Introduction
Transfer Case (All-Wheel Drive) Inspection
.....
. 6-14
. 3-29
... 3-4
. 3-16
. 5-88
. 3-16
. 5-79
. 6-14
Jump Starting
........................ 5-40
Key Lock Cylinders Service
........ ........... 6-1 1
Keys
........................................................... 2-3
Keyless
Entry System
....................................... 2-4
L
Lamps
Exterior
...................................................... 3-1 3
Interior
....................................................... 3-1 6
Lamps On Reminder
....................................... 3-14
Lap-Shoulder Belt
........................................... 1-31 LATCH
System
Child Restraints
........................................... 1-61
Securing a Child Restraint Designed for the
LATCH System
........................................ 1-63
Leather
......................................................... 5-79
LEFT REAR DOOR AJAR
................................ 3-56
Liftgate/LiftgIass
.............................. ........ 2-13
Liftglasdliftgate
.............................. .... 2-13
Light Leaving Your Vehicle With the Engine Running
...... 2-27
Air Bag Readiness
....................................... 3-31
Anti-Lock Brake System Warning
................... 3-35
Brake System Warning
................................. 3-34
Charging System
..................................... 3-33
Cruise Control
................. ................ 3-41
Low Fuel Warning
................................... 3-42
Malfunction Indicator
................................ 3-38
Passenger Air Bag Status Indicator
............ 3-32
Safety Belt Reminder
................................... 3-30
Security
..................................................... 3-41
Tow/Haul Mode
........................................... 3-42
Traction
Off ................................................ 3-36
Listening
to a DVD ..................................... 3-72
Loading Your Vehicle
................................... 4-44
Lockout Protection
.......................................... 2-13
Locks Delayed Locking
........................................... 2-9
Door
........................................................... 2-8
Lockout Protection
....................................... 2-13
Power Door
.................................................. 2-9
8

Remote Control .............................................. 3-75
Remote Keyless Entry System
............................ 2-4
Remote Keyless Entry System. Operation
............ 2-5
Removing the 50/50 Split Bench Seats
.............. 1-14
Removing the Bench Seat
................................ 1-20
Removing the Flat Tire and Installing
Removing the Spare Tire and Tools
................... 5-64
Replacement Bulbs
......................................... 5-53
Replacing Restraint System Parts After a Crash
..... 1-87
Replacing the Bench Seat
................................ 1-21
Reporting Safety Defects
Canadian Government
................................... 7-9
General Motors
........................................... 7-1 0
United States Government .............................. 7-9
Reprogramming a Single HomeLink@ Button
....... 2-41
Resetting Defaults
........................................... 2-41
Restraint System Check
................................... 6-10
Checking Your Restraint Systems
................... 1-86
Replacing Restraint System Parts
After a Crash
.......................................... 1-87
Checking
.................................................... 1-86
Restraints, Head
............................................... 1-6
Retained Accessory Power (RAP)
...................... 2-19
Returning the Seat to an Upright Position
........... 1-19
Returning the Seatbacks to an Upright Position
...... 1-24
the Spare
Tire
............................................. 5-68
Replacing Brake System Parts
.......................... 5-39
Replacing the
50/50 Split Bench Seat ................ 1-16
Restraint Systems
Replacing Parts
........................................... 1-87 Returning
the Seats to an Upright Position
......... 1-11
Returning the Seat(s) to an Upright Position
....... 1-13
RFA
# BATTERY LOW .................................... 3-56
Right Front Passenger Position, Safety Belts
...... 1-39
RIGHT REAR DOOR AJAR
.............................. 3-56
Roadside
Assistance Program
....................................... 7-5
Rocking Your Vehicle To Get
It Out ................... 4-42
Running Your Engine While You Are Parked
....... 2-30
5
Safety Belt
Safety Belts Reminder
Light
............................... ..... 3-30
Center Passenger Position
............ ..... 1-39
Questions and Answers About Safety Belts
..... 1-29
Care
of
......................................... ..... 5-80
Driver Position
........................................ 1-30
How
to Wear Safety Belts Properly ................ 1-30
Rear Safety Belt Comfort Guides for Children
and Small Adults
...................................... 1-44
Rear Seat Passengers
................................. 1-41
Safety Belt Extender
.................................... 1-47
Safety Belt Use During Pregnancy
............. 1-38
Safety Belts Are for Everyone
................... 1-25
Safety Warnings and Symbols
.............................. III
Scheduled Maintenance ..................................... 6-5
Right Front Passenger
Position
...................... 1-39
Safety Chains
.................................... ..... 4-52 ...
12