2003 CHEVROLET AVALANCHE tailgate

Automatic Unlocking
Press the personalization button until AUTOMATIC
UNLOCKING appears in the display. To select
your personalization for automatic unlocking, press the
select button while AUTOMATIC UNLOCKING is
displayed on the DIC. Pressing the select button will
scroll through the following choices:
UNLOCK ALL IN PARK (default):All of the doors will
unlock when the vehicle is shifted into PARK (P).
UNLOCK ALL AT KEY OUT:All of the doors will
unlock when the key is taken out of the ignition.
UNLOCK DOORS MANUALLY:The doors will not be
unlocked automatically.
UNLOCK DRIVER IN PARK:The driver's door will be
unlocked when the vehicle is shifted into PARK (P).
Choose one of the four options and press the
personalization button while it is displayed on the DIC to
select it and move on to the next feature. For more
information on automatic door locks see
Programmable
Automatic Door Locks on page 2-8.
Delayed Locking
If your DIC does not have this feature, you can still
program the delayed locking feature. SeeDelayed
Locking on page 2-8for more information.When locking the doors with the power lock switch or
the keyless entry transmitter and a door or the liftgate is
open, the delayed locking feature will delay locking
the doors and tailgate until ®ve seconds after the last
door is closed.
Press the personalization button until DELAYED
LOCKING appears in the display. To select your
personalization for delayed locking, press the select
button while DELAYED LOCKING is displayed on the
DIC. Pressing the select button will scroll through
the following choices:
DELAYED LOCKING ON:The doors will not lock until
®ve seconds after the last door or the liftgate is
closed. You will hear three chimes to signal that the
delayed locking feature is in use. You can temporarily
override delayed locking by pressing the lock button
on the door or keyless entry transmitter a second time.
DELAYED LOCKING OFF:The doors will lock
immediately when pressing the power lock switch or the
lock button on the keyless entry transmitter.
Choose one of the two options and press the
personalization button while it is displayed on the DIC to
select it and move on to the next feature. For more
information on automatic door locks see
Programmable
Automatic Door Locks on page 2-8.
This feature will not operate if the key is in the ignition.
3-52

Daytime Running Lamps
Vehicles with Gray Body-Side Cladding
The DRLs are located in the front fascia near the
foglamps. They can be identi®ed by their square shape.
1. Reach under the front
fascia and locate the
DRL housing. Be
sure you are not
picking the foglamp
housing, which is near
the DRLs.
2. Turn the bulb socket counterclockwise and remove
it from the DRL housing.
3. Pull out the old bulb from the socket and put a new
bulb in.
4. Place the bulb socket back into the DRL housing
and turn it clockwise until it is tight.
Center High-Mounted Stoplamp
(CHMSL)
It is recommended that this component be replaced as
a unit by your dealer.
Taillamps
A. Stoplamp
B. Turn Signal Lamp
C. Back-up Lamp
1. Open the tailgate.
5-58

2. Remove the two rear
lamp assembly screws
near the tailgate
latch and pull out the
lamp assembly.
3. Press the release tab
and turn the bulb
socket
counterclockwise to
remove it from
the taillamp housing.
4. Pull the old bulb straight out from the socket.5. Press a new bulb into the socket and turn the
socket clockwise into the taillamp housing until
it clicks.
6. Reinstall the rear lamp assembly and tighten the
screws.
7. Close the tailgate.
Replacement Bulbs
Exterior Lamp Bulb Number
Low-Beam Headlamps 9006
High-Beam Headlamps *9011or 9005
Daytime Running Lamps (DRL) 4114K
Side Marker Lamp 194
Front Parking and Turn Lamp 3157A or 3457NA
Rear Marker Lamp, Taillamp and
Stop Lamp3157
Rear Turn Lamp 3157
Back-up Lamp 3157
* Vehicles with Body±Side Cladding
For replacement bulbs not listed here, please contact
your dealer.
5-59

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 6-17.
Automatic Transmission Check
Check the transmission ¯uid level; add if needed. SeeAutomatic Transmission Fluid on page 5-22. A ¯uid 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
speci®ed in Part D.
Body Lubrication Service
Lubricate all hood latch assembly, secondary latch,
pivots, spring anchor, release pawl, midgate hinges, side
storage box door hinges, tailgate hinge, tailgate
linkage, outer tailgate 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.
Starter Switch Check
{CAUTION:
When you are doing this check, the 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.
6-12

Usage Fluid/Lubricant
Rear Axle
(Steerable)Synthetic Axle Lubricant; use only
GM Part No. 12378557 (in Canada
88901362). Do not add friction
modi®er.
Automatic
Transfer CaseAUTO-TRAK II Fluid (GM Part No.
U.S. 12378508, in Canada
10953626).
Front Axle
Propshaft
Spline or
One-Piece
Propshaft
Spline
(Two-Wheel
Drive with Auto.
Trans.)Spline Lubricant, Special Lubricant
(GM Part No. U.S. 12345879, in
Canada 10953511) or lubricant
meeting requirements of GM
9985830.Usage Fluid/Lubricant
Hood HingesMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474, or equivalent).
Outer Tailgate
Handle Pivot
PointsMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474, or equivalent).
Weatherstrip
ConditioningDielectric Silicone Grease (GM Part
No. U.S. 12345579, in Canada
10953014, or equivalent).
Weatherstrip
SqueaksSynthetic Grease with Te¯on,
Superlube (GM Part No. U.S.
12371287, in Canada 10953437, or
equivalent).
6-18

Side Rail Channels.........................................2-75
Skidding........................................................4-18
Snow Plow....................................................4-54
Some Other Rainy Weather Tips.......................4-35
Spare Tire Check............................................6-11
Spare Tire.....................................................5-87
Special Fabric Cleaning Problems.....................5-89
Speci®cations, Capacities...............................5-106
Speedometer..................................................3-32
Stabilitrak
žSystem.........................................4-12
STABILITY SYS ACTIVE..................................3-62
STABILITY SYS DISABLED..............................3-63
Stalling on an Incline.......................................4-29
Starter Switch Check.......................................6-12
Starting Your Engine.......................................2-28
Steering and Suspension Inspection..................6-15
Steering in Emergencies..................................4-15
Steering Tips..................................................4-14
Steering Wheel Controls, Audio.......................3-101
Steering........................................................4-14
Stereo RCA Jacks..........................................3-96
Storage Areas................................................2-72
All-Weather Cargo Area................................2-72
Center Console Storage Area........................2-59
Center Overhead Console.............................2-59
Front Armrest Storage Area...........................2-59
Glove Box..................................................2-59
Luggage Carrier..........................................2-60
Rear Storage Area.......................................2-61
Top-Box Storage..........................................2-77Storage Areas (cont.)
Storing a Flat or Spare Tire, Jack and Tools.......5-81
Stuck in Sand, Mud, Ice or Snow......................4-45
Sun Visors.....................................................2-24
Sunroof.........................................................2-84
Supplemental Brake Assist System...................... 4-9T
Tachometer....................................................3-33
Tailgate Removal............................................2-21
Tailgate.........................................................2-21
Taillamps.......................................................5-58
Temperature and Compass Display....................2-46
Temperature Display........................................2-49
Testing the Alarm............................................2-26
Theft-Deterrent, Radio....................................3-101
Theft-Deterrent Systems...................................2-25
Content Theft-Deterrent................................2-25
Passlock
ž...................................................2-26
Throttle, Adjustable..........................................2-29
Tilt Wheel........................................................ 3-7
Tire In¯ation Check.........................................6-11
Tires.....................................................5-61, 5-93
Buying New Tires........................................5-64
Chains.......................................................5-68
Changing a Flat Tire....................................5-70
If a Tire Goes Flat.......................................5-69
In¯ation -- Tire Pressure...............................5-62
14