2009 GMC SIERRA 1500 hood open

5. Open the hood on the other vehicle and locate the
positive (+) and negative (−) terminal locations on
that vehicle.
The positive (+) terminal, is located under a red
plastic cover at the positive battery post. To uncover
the positive (+) terminal, open the red plastic cover.
The remote negative (−) terminal is a stud located
on the right front passenger side of the engine,
where the negative battery cable attaches.
SeeEngine Compartment Overview on page 5-16.
{CAUTION:
An electric fan can start up even when the engine
is not running and can injure you. Keep hands,
clothing and tools away from any underhood
electric fan.
{CAUTION:
Using a match near a battery can cause battery
gas to explode. People have been hurt doing this,
and some have been blinded. Use a ashlight if
you need more light.
Be sure the battery has enough water. You do not
need to add water to the battery installed in your
new vehicle. But if a battery has ller caps, be
sure the right amount of uid is there. If it is low,
add water to take care of that rst. If you do not,
explosive gas could be present.
Battery uid contains acid that can burn you.
Do not get it on you. If you accidentally get it in
your eyes or on your skin, ush the place with
water and get medical help immediately.
5-48

To adjust the vertical aim:
1. Open the hood. SeeHood Release on page 5-14
for more information.
2. Locate the aim dot on the lens of the low-beam
headlamp.
3. Record the distance from the ground to the aim dot
on the low-beam headlamp.4. At a wall, measure from the ground upward (A) to
the recorded distance from Step 3 and mark it.
5. Draw or tape a horizontal line (B) on the wall the
width of the vehicle at the height of the mark in
Step 4.
Notice:Do not cover a headlamp to improve beam
cut-off when aiming. Covering a headlamp may
cause excessive heat build-up which may cause
damage to the headlamp.
6. Turn on the low-beam headlamps and place a
piece of cardboard or equivalent in front of the
headlamp not being adjusted. This allows only the
beam of light from the headlamp being adjusted
to be seen on the at surface.
5-59

Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 5-66.
For any bulb changing procedure not listed in this
section, contact your dealer/retailer.
Halogen Bulbs
{CAUTION:
Halogen bulbs have pressurized gas inside and
can burst if you drop or scratch the bulb. You or
others could be injured. Be sure to read and follow
the instructions on the bulb package.
Headlamps
To replace one of these bulbs:
1. Open the hood. SeeHood Release on page 5-14
for more information.
2. If you are replacing the bulb on the passenger side
remove the Engine Air Cleaner cover. SeeEngine Air
Cleaner/Filter on page 5-22for more information.3. Reach in and access the bulb sockets from inside
the engine compartment.
4. Turn the bulb socket counterclockwise to remove it
from the headlamp assembly and pull it straight out.
5. Unplug the electrical connector from the old bulb by
releasing the clips on the bulb socket.
6. Replace it with a new bulb socket.
7. Plug in the electrical connector to the new bulb
socket.
8. Reinstall the new bulb socket into the headlamp
assembly and turn it clockwise to secure.
9. Close the hood.
5-61

Fuses
Center Instrument Panel Fuse Block.............5-126
Fuses and Circuit Breakers.........................5-124
Instrument Panel Fuse Block.......................5-124
Underhood Fuse Block...............................5-127
Windshield Wiper.......................................5-123
G
Gage
Oil Pressure...............................................3-48
Speedometer..............................................3-35
Tachometer.................................................3-35
Voltmeter Gage...........................................3-41
Gages
Engine Coolant Temperature.........................3-44
Fuel..........................................................3-51
Trip Odometer.............................................3-35
Garage Door Opener.......................................2-73
Gasoline
Octane........................................................ 5-7
Specications............................................... 5-7
Glove Box.....................................................2-80
GM Mobility Reimbursement Program.................. 7-7
H
Halogen Bulbs................................................5-61
Hazard Warning Flashers................................... 3-8
Head Restraints............................................... 1-3
Headlamp
Aiming .......................................................5-58
Headlamps....................................................5-61
Bulb Replacement.......................................5-61
Daytime Running Lamps (DRL).....................3-17
Exterior Lamps............................................3-16
Flash-to-Pass..............................................3-10
High/Low Beam Changer..............................3-10
On Reminder..............................................3-17
Pickup Box Identication and Fender Marker
Lamps ....................................................5-63
Heated Seats................................................... 1-8
Heater...................................................3-24, 3-25
Engine Coolant...........................................2-27
Highbeam On Light.........................................3-50
High-Speed Operation, Tires.............................5-77
Highway Hypnosis...........................................4-28
Hill and Mountain Roads..................................4-28
7