2010 GMC TERRAIN wiring

Seats and Restraints 2-39
steering wheel, instrument
panel, roof-rail airbag modules,
ceiling headliner or pillar garnish
trim, overhead console, front
sensors, side impact sensors,
rollover sensor module, or airbag
wiring can affect the operation of
the airbag system.
In addition, the vehicle has a
passenger sensing system for
the right front passenger
position, which includes sensors
that are part of the passenger
seat. The passenger sensing
system may not operate properly
if the original seat trim is
replaced with non-GM covers,
upholstery or trim, or with GM
covers, upholstery or trim
designed for a different vehicle.
Any object, such as an
aftermarket seat heater or a
comfort enhancing pad or
device, installed under or on top
of the seat fabric, could also
interfere with the operation of
the passenger sensing system.This could either prevent proper
deployment of the passenger
airbag(s) or prevent the
passenger sensing system
from properly turning off the
passenger airbag(s). See
Passenger Sensing System
on
page 2‑33.
If you have questions, call
Customer Assistance. The
phone numbers and addresses
for Customer Assistance are in
Step Two of the Customer
Satisfaction Procedure in this
manual. See Customer
Satisfaction Procedure
on
page 12‑1.
If the vehicle has rollover
roof-rail airbags, see Different
Size Tires and Wheels
on
page 9‑62for additional
important information. Q: Because I have a disability,
I have to get my vehicle
modified. How can I find out
whether this will affect my
airbag system?
A: If you have questions, call
Customer Assistance. The
phone numbers and addresses
for Customer Assistance are in
Step Two of the Customer
Satisfaction Procedure in this
manual. See Customer
Satisfaction Procedure
on
page 12‑1.
In addition, your dealer/retailer and
the service manual have information
about the location of the airbag
sensors, sensing and diagnostic
module and airbag wiring.

Instruments and Controls 4-15
This cycle repeats if the passenger
remains unbuckled and the vehicle
is moving.
If the passenger safety belt is
buckled, neither the chime nor the
light comes on.
The front passenger safety belt
warning light and chime may turn on
if an object is put on the seat such
as a briefcase, handbag, grocery
bag, laptop or other electronic
device. To turn off the warning light
and or chime, remove the object
from the seat or buckle the
safety belt.
Airbag Readiness Light
This light shows if there is an
electrical problem. The system
check includes the airbag sensor,
the pretensioners, the airbag
modules, the wiring and the crash
sensing and diagnostic module. For
more information on the airbag
system, seeAirbag System
on
page 2‑25.
The airbag readiness light comes on
and stays on for several seconds
when the vehicle is started. Then
the light turns off.
{WARNING
If the airbag readiness light stays
on after the vehicle is started or
comes on while driving, it means
the airbag system might not be
working properly. The airbags in
the vehicle might not inflate in a
crash, or they could even inflate
without a crash. To help avoid
injury, have the vehicle serviced
right away.
Passenger Airbag Status
Indicator
The vehicle has a passenger
sensing system. See Passenger
Sensing System
on page 2‑33for
important safety information. The
overhead console has a passenger
airbag status indicator.
United States
Canada
When the vehicle is started, the
passenger airbag status indicator
will light ON and OFF, or the symbol
for on and off, for several seconds

Vehicle Care 9-35
Stop/Tail/Turn Signal/
Sidemarker Lamp
To replace one of these lamps:
1. Open the liftgate. SeeLiftgate
(Manual)
on page 1‑8or
Liftgate (Power) on page 1‑9.
A. Screw
B. Screw Cover
2. Remove the two screw covers (B) from the taillamp
assembly. 3. Remove the two screws (A)
securing the taillamp assembly.
4. Pull taillamp assembly out of the vehicle body.
5. Disconnect the lamp wiring harness.6. Turn the bulb socketcounterclockwise and pull it out.
7. Pull the bulb straight out of the socket.
8. Install the new bulb. 9. Push the bulb socket in and turn
it clockwise.
10. Reverse Steps 2 through 5 to reinstall lamp assembly.
11. Verify that the taillampassembly tab, located at
the bottom of the taillamp
assembly, is aligned to the
facia bracket before securing
with screws.

9-36 Vehicle Care
Auxiliary Taillamp
To replace one of these lamps:
1. Open the liftgate. SeeLiftgate
(Manual)
on page 1‑8or
Liftgate (Power) on page 1‑9.
2. Remove the interior trim access panel.
A. Attachment Nuts
B. Retaining Hook
3. Remove the five attachment nuts (A) securing the taillamp
assembly to the liftgate. 4. Disengage the retaining hook (B)
and pull the taillamp assembly
out of vehicle liftgate.
5. Disconnect the lamp wiring harness.
6. Turn the bulb socketcounterclockwise and pull it out.
7. Pull the bulb straight out of the socket.
8. Install the new bulb. 9. Push the bulb socket in and turn
it clockwise.
10. Reverse steps 2 through 5 to reinstall lamp assembly.
Back–Up Lamp
Removal of the lamp assembly is
not required to replace
back-up lamp.
To replace one of these lamps:
1. Open the liftgate. See Liftgate
(Manual)
on page 1‑8or
Liftgate (Power) on page 1‑9.
2. Remove the interior trim access panel.

9-38 Vehicle Care
7. Turn the lamp assembly into theliftgate engaging the clip side
first.
8. Push on the lamp side opposite the clip until the lamp assembly
snaps into place.
Replacement Bulbs
Exterior Lamp Bulb
Number
Auxiliary Taillamp 161
Back-Up Lamp 921
Fog Lamp H11
Headlamp
High Beam HB3Exterior Lamp
Bulb
Number
Headlamp
Low Beam H11
License Plate Lamp W5WLL
Parking Lamp/Turn
Signal Front 7444NA
Sidemarker Front 194
Taillamp/Turn Signal
Lamp/Stop Lamp/
Sidemarker 3057K
For replacement bulbs not listed
here, contact your dealer/retailer.
Electrical System
Fuses
The wiring circuits in the vehicle
are protected from short circuits by
fuses. This greatly reduces the
chance of damage caused by
electrical problems.
Look at the silver-colored band
inside the fuse. If the band is broken
or melted, replace the fuse. Be sure
to replace a bad fuse with a new
one of the identical size and rating.
There are two fuse blocks in the
vehicle: one in the engine
compartment and one in the
instrument panel.
There is a fuse puller located in the
engine compartment fuse block.
See Engine Compartment Fuse
Block
on page 9‑39. It can be used
to easily remove fuses from the fuse
block.