2010 GMC SIERRA ECU

Remote Vehicle Start
With this feature the engine can be started from outside
of the vehicle.
Starting the Vehicle
1. Aim the RKE transmitter at the vehicle.
2. Press
Q.
3. Immediately after completing Step 2, press and hold
/until the turn signal lamps flash.
When the vehicle starts, the parking lamps will turn
on and remain on as long as the engine is running.
The doors will be locked and the climate control system
may come on.
The engine will continue to run for 10 minutes. Repeat
the steps for a 10-minute time extension. Remote start
can be extended only once.
Canceling a Remote Start
To cancel a remote start:
.Aim the RKE transmitter at the vehicle and press
and hold
/until the parking lamps turn off.
.Turn on the hazard warning flashers.
.Turn the ignition on and then back off.
See Remote Vehicle Start on page 3‑7.
Door Locks
There are several ways to lock and unlock the vehicle.
From outside, use the Remote Keyless Entry (RKE)
transmitter or the key in the driver door. From inside,
use the power door locks or the manual door locks.
To lock or unlock the door with the manual locks, push
down or pull up on the manual lock knob.
Power Door Locks
If available, these switches are located on the
front doors.
K:Press to unlock the doors.
Q:Remove the key from the ignition and press to
lock the doors.
For more information, see:
.Programmable Automatic Door Lockson
page 3‑10.
.Rear Door Security Locks on page 3‑10.
1-7

Universal Remote System
The Universal Home Remote System allows for garage
door openers, security systems, and home automation
devices to be programmed to work with these buttons in
the vehicle.
SeeUniversal Home Remote System
on page 3‑69.
Sunroof
Extended Cab
The sunroof switch is
located on the headliner
above the rearview mirror.
Vent : From the closed position, press and hold the rear
of the switch to vent the sunroof.
Open : From the vent position, press and hold the rear
of the switch to open the sunroof.
Close : Press and hold the front of the switch to close
the sunroof.
The sunroof also has a roller sunshade that can be
used to block the rays of the sun. To open the
sunshade, press and unlatch it, and roll it back.
To close, pull it forward and latch it into the closed
position.
1-30

Roadside Assistance Program
U.S.:1-800-GMC-8782 (462-8782)
TTY Users: 1-888-889-2438
Canada: 1-800-268-6800
As the owner of a new GMC, you are automatically
enrolled in the Roadside Assistance program. This
program provides technically trained advisors who are
available 24 hours a day, 365 days a year, minor repair
information or towing arrangements.
Roadside Assistance and OnStar
If you have a current OnStar subscription, press the
OnStar button and the current GPS location will be sent
to an OnStar Advisor who will assess your problem,
contact Roadside Assistance, and relay exact location
to get you the help you need.
Online Owner Center
The Online Owner Center is a complimentary service
that includes online service reminders, vehicle
maintenance tips, online owner manual, special
privileges and more.
Sign up today at: www.gmownercenter.com/gmc
(U.S.) or www.gm.ca (Canada).
OnStar®
OnStar®uses several innovative technologies and live
advisors to provide a wide range of safety, security,
navigation, diagnostics, and calling services.
Automatic Crash Response
In a crash, built in sensors can automatically alert an
OnStar advisor who is immediately connected to the
vehicle to see if you need help.
How OnStar Service Works
Q
: This blue button connects you to a specially
trained OnStar advisor to verify your account
information and to answer questions.
]: Push this red emergency button to get priority help
from specially trained OnStar emergency advisors.
X: Push this button for hands‐free, voice‐activated
calling and to give voice commands for turn‐by‐turn
navigation.
1-34

Section 2 Seats and Restraint System
Head Restraints. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Manual Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Power Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Manual Lumbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Power Lumbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Heated Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Memory Seat, Mirrors, and Pedals . . . . . . . . . . . . . . 2-8
Reclining Seatbacks . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Seatback Latches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Center Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Rear Seat Operation (Extended Cab Full Bench) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Rear Seat Operation (All Split Bench and Hybrid Full Bench) . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Safety Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
Safety Belts: They Are for Everyone . . . . . . . . . . . 2-16
How to Wear Safety Belts Properly . . . . . . . . . . . . 2-21
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30
Safety Belt Use During Pregnancy . . . . . . . . . . . . . 2-37
Lap Belt (Crew and Extended Cab) . . . . . . . . . . . . 2-37
Safety Belt Extender . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38 Child Restraints
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
Older Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
Infants and Young Children . . . . . . . . . . . . . . . . . . . . 2-42
Child Restraint Systems . . . . . . . . . . . . . . . . . . . . . . . 2-46
Where to Put the Restraint . . . . . . . . . . . . . . . . . . . . . 2-48
Lower Anchors and Tethers for Children (LATCH) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-50
Securing a Child Restraint in a Rear Seat Position . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58
Securing a Child Restraint in the Center Front Seat Position . . . . . . . . . . . . . . . . . . 2-61
Securing a Child Restraint in the Right Front Seat Position (With Passenger
Sensing System) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62
Securing a Child Restraint in the Right Front Seat Position (With Airbag
Off Switch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-66
Securing a Child Restraint in the Right Front Seat Position (Heavy Duty
Crew Cab Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-70
2-1

If the belt stops before it reaches the buckle, when
using the lap-shoulder belt in a rear center seating
position of a crew-cab, tilt the latch plate and keep
pulling the safety belt until it can be buckled.3. Push the latch plate into the buckle until it clicks.Pull up on the latch plate to make sure it is secure.
If the belt is not long enough, see Safety Belt
Extender
on page 2‑38.
If the latch plate will not go fully into the buckle,
check if the correct buckle is being used.
Position the release button on the buckle so that
the safety belt could be quickly unbuckled if
necessary.
2-31

To make the belt shorter, pull its free end as shown until
the belt is snug.
If the belt is not long enough, seeSafety Belt Extender
on page 2‑38.
Make sure the release button on the buckle is
positioned so you would be able to unbuckle the safety
belt quickly if necessary.
Safety Belt Extender
If the vehicle's safety belt will fasten around you,
you should use it.
But if a safety belt is not long enough, your dealer/
retailer will order you an extender. When you go in to
order it, take the heaviest coat you will wear, so the
extender will be long enough for you. To help avoid
personal injury, do not let someone else use it, and use
it only for the seat it is made to fit. The extender has
been designed for adults. Never use it for securing child
seats. To wear it, attach it to the regular safety belt.
For more information, see the instruction sheet that
comes with the extender.
2-38

Q: What is the proper way to wear safety belts?
A:An older child should wear a lap-shoulder belt and
get the additional restraint a shoulder belt can
provide. The shoulder belt should not cross the face
or neck. The lap belt should fit snugly below the
hips, just touching the top of the thighs. This applies
belt force to the child's pelvic bones in a crash.
It should never be worn over the abdomen, which
could cause severe or even fatal internal injuries in
a crash.
Also see “Rear Safety Belt Comfort Guides” under
Lap-Shoulder Belt on page 2‑30.
According to accident statistics, children and infants are
safer when properly restrained in a child restraint
system or infant restraint system secured in a rear
seating position.
In a crash, children who are not buckled up can strike
other people who are buckled up, or can be thrown out
of the vehicle. Older children need to use safety belts
properly.
{WARNING:
Never do this.
Never allow two children to wear the same safety
belt. The safety belt can not properly spread the
impact forces. In a crash, the two children can be
crushed together and seriously injured. A safety
belt must be used by only one person at a time.
2-40

{WARNING:
Never do this.
Never hold an infant or a child while riding in a
vehicle. Due to crash forces, an infant or a child
will become so heavy it is not possible to hold it
during a crash. For example, in a crash at only
40 km/h (25 mph), a 5.5 kg (12 lb) infant will
suddenly become a 110 kg (240 lb) force on a
person's arms. An infant should be secured in an
appropriate restraint.
2-43