2006 GMC SIERRA 1500 tailgate

Keys...............................................................2-3
Remote Keyless Entry System.........................2-4
Remote Keyless Entry System Operation...........2-5
Doors and Locks.............................................2-8
Door Locks....................................................2-8
Power Door Locks..........................................2-9
Delayed Locking...........................................2-10
Programmable Automatic Door Locks..............2-10
Rear Door Security Locks (Crew Cab)................2-13
Lockout Protection........................................2-13
Rear Doors..................................................2-14
Tailgate.......................................................2-14
Windows........................................................2-16
Manual Windows..........................................2-16
Power Windows............................................2-17
Swing-Out Windows......................................2-18
Sliding Rear Window.....................................2-18
Sun Visors...................................................2-18
Theft-Deterrent Systems..................................2-19
Content Theft-Deterrent.................................2-19
Passlock
®....................................................2-21Starting and Operating Your Vehicle................2-21
New Vehicle Break-In....................................2-21
Ignition Positions..........................................2-22
Retained Accessory Power (RAP)...................2-23
Starting the Engine.......................................2-23
Engine Coolant Heater..................................2-25
Automatic Transmission Operation...................2-26
Tow/Haul Mode............................................2-31
Manual Transmission Operation......................2-34
Four-Wheel Drive..........................................2-38
Parking Brake..............................................2-52
Shifting Into Park (P)
(Automatic Transmission)............................2-53
Shifting Out of Park (P)
(Automatic Transmission)............................2-55
Parking Your Vehicle
(Manual Transmission)...............................2-56
Parking Over Things That Burn.......................2-56
Engine Exhaust............................................2-57
Running the Engine While Parked...................2-58
Section 2 Features and Controls
2-1

Rear Doors
Extended Cab
Your vehicle may be equipped with a rear access
door(s) that allows easier access to the rear area
of the extended cab.
To open a rear access door
from the outside, rst open
the front door. Then, use
the handle located on
the front edge of the rear
access door to open it.
You must fully close a rear access door before you can
close the front door.To open a rear access door
from the inside, the front
door must be opened rst.
Then, use the handle
located on the inside of the
rear access door to open it.
Crew Cabs
If your vehicle is a crew cab, you can open your doors
from the inside or outside. Your vehicle may also have
a feature which prevents children from opening the rear
doors. SeeRear Door Security Locks (Crew Cab) on
page 2-13for more information.
Tailgate
You can open the tailgate by lifting up on its handle
while pulling the tailgate toward you.
To shut the tailgate, rmly push it upward until it
latches.
After you put the tailgate back up, pull it back towards
you to be sure it latches securely.
2-14

Tailgate Removal
The tailgate on your vehicle can be removed to allow for
different loading situations. Although the tailgate can be
removed without assistance, you may want someone to
assist you with the removal to avoid possible damage to
the vehicle.
To remove the tailgate, do the following:
1. Raise the tailgate
slightly and release
both retaining cable
clips. To release the
retaining cable clips,
lift the cable so it points
straight out and push
the cable clip forward.2. With the tailgate at a
slight upward angle,
pull back on the tailgate
at the right edge and
then move the tailgate
to the right to release
the left edge.
Reverse the above procedure to reinstall. Make sure the
tailgate is secure.
2-15

4. If a CHMSL bulb is replaced, put the new bulb into
the socket and press it in until it is tight.
If a cargo lamp is replaced, put a new cargo lamp
bulb into the socket and press it in until it is tight
before turning the socket counterclockwise.
5. Reinstall the back plate into the lamp assembly.
6. Reinstall the lamp assembly and tighten the screws.
Pickup Box Identication and
Fender Marker Lamps
To replace a pickup box identication or fender marker
lamp bulb, do the following:
1. Remove the screws and lamp assembly.
2. Unplug the lamp assembly harness.
3. Gently pry the individual lamp from the lamp
assembly.
4. Unplug the lamp.
5. Plug in a new lamp and snap it into the assembly.
6. Reinstall the lamp assembly.
Taillamps, Turn Signal, Stoplamps
and Back-up Lamps
To replace one of these bulbs, do the following:
1. Open the tailgate.Tailgate on page 2-14for more
information.
2. Remove the two rear
lamp assembly screws
near the tailgate
latch and pull out the
lamp assembly.
5-68

(f)Lubricate all key lock cylinders, body door hinges,
hood latch assembly, secondary latch, pivots, spring
anchor, release pawl, tailgate hinges, tailgate linkage,
tailgate handle pivot points, latch bolt, fuel door hinge,
locks, and folding seat hardware. More frequent
lubrication may be required when exposed to a corrosive
environment. Applying silicone grease on weatherstrips
with a clean cloth will make them last longer, seal better
and not stick or squeak.
(g)Check vent hose at transfer case for kinks and
proper installation.
(h)Change automatic transmission uid and lter if the
vehicle Gross Vehicle Weight Rating (GVWR) is over
8600 lbs or if the vehicle is mainly driven under one or
more of these conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police or delivery
service.
(i)Drain, ush, and rell cooling system. This service can
be complex; you should have your dealer perform this
service. See Engine Coolant on page 5-35 for what to
use. Inspect hoses. Clean radiator, condenser, pressure
cap, and ller neck. Pressure test the cooling system and
pressure cap.(j)A uid loss in any vehicle system could indicate a
problem. Have the system inspected and repaired and
the uid level checked. Add uid if needed.
(k)Inspect system. Check all fuel and vapor lines and
hoses for proper hook-up, routing, and condition. Check
that the purge valve works properly, if equipped. Replace
as needed.
(l)Change clutch uid (or every 24 months, whichever
occurs rst).
(m)Change automatic transmission uid and lter if the
vehicle is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside temperature
regularly reaches 90°F (32°C) or higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police, or delivery
service.
(n)Vehicles with diesel engine or with GVWR above
10,000 lbs (4 536 kg) only: Inspect shields for damage or
looseness. Adjust or replace as required. This is a Noise
Emission Control Service. Applicable to vehicles sold in
the United States and recommended for vehicles sold in
Canada.
6-10

Usage Fluid/Lubricant
Hood HingesMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
Body Door
Hinge Pins,
Tailgate Hinge
and Linkage,
Folding Seats,
and Fuel Door
HingeMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).Usage Fluid/Lubricant
Tailgate Handle
Pivot Points,
Hinges, Latch
Bolt, and
LinkageMulti-Purpose Lubricant, Superlube
(GM Part No. U.S. 12346241, in
Canada 10953474).
Weatherstrip
ConditioningDielectric Silicone Grease (GM Part
No. U.S. 12345579, in Canada
992887).
Weatherstrip
SqueaksSynthetic Grease with Teon,
Superlube (GM Part No. U.S.
12371287, in Canada 10953437).
6-17

Securing a Child Restraint
Center Front Seat Position............................1-56
Rear Seat Position......................................1-54
Right Front Seat Position (Crew Cab).............1-57
Right Front Seat Position (Regular and
Extended Cab)................................1-59, 1-65
Security Light.................................................3-49
Service........................................................... 5-4
Accessories and Modications......................... 5-4
Adding Equipment to the Outside of Your
Vehicle..................................................... 5-5
California Proposition 65 Warning.................... 5-4
Doing Your Own Work................................... 5-5
Engine Soon Light.......................................3-46
Publications Ordering Information...................7-15
Servicing Your Airbag-Equipped Vehicle..............1-86
Setting the Time
Radios with Radio Data Systems (RDS).........3-71
Radios without Radio Data Systems (RDS).....3-71
Sheet Metal Damage.....................................5-119
Shifting Into Park (P).......................................2-53
Shifting Out of Park (P)...................................2-55
Signals, Turn and Lane-Change.......................... 3-7
Sliding Rear Windows.....................................2-18
Snow Plow....................................................4-54
Spare Tire....................................................5-112
Installing....................................................5-96
Removing...................................................5-92
Storing.....................................................5-108
Specications, Capacities...............................5-133Speedometer..................................................3-33
Starting Your Engine.......................................2-23
Steering........................................................4-11
Steering Wheel Controls, Audio.......................3-129
Steering Wheel, Tilt Wheel................................. 3-6
Storage Areas
Center Console Storage Area........................2-79
Coinholder(s)..............................................2-79
Cupholder(s)...............................................2-79
Front Storage Area......................................2-79
Glove Box..................................................2-79
Stuck in Sand, Mud, Ice or Snow......................4-46
Sun Visors.....................................................2-18
Sunroof.........................................................2-82
Swing-Out Windows........................................2-18
T
Tachometer....................................................3-34
Tailgate.........................................................2-14
Taillamps
Turn Signal, Stoplamps and Back-up Lamps....5-68
Theft-Deterrent, Radio....................................3-129
Theft-Deterrent Systems...................................2-19
Content Theft-Deterrent................................2-19
Passlock
®...................................................2-21
Tilt Wheel........................................................ 3-6
Tires.............................................................5-72
12