2007 GMC YUKON XL turn signal bulb

Turn and Lane-Change Signals
The turn signal has two upward (for right) and
two downward (for left) positions. These positions
allow you to signal a turn or a lane change.
To signal a turn, move the lever all the way up or
down. When the turn is nished, the lever will
return automatically.
To signal a lane change, raise or lower the lever
for less than one second until the arrow starts
to ash. This will cause the turn signals to
automatically ash three times. It will ash
six times if tow-haul mode is active. Holding the
turn signal lever for more than one second
will cause the turn signals to ash until you release
the lever. The lever will return by itself when it is
released.
An arrow on the
instrument panel cluster
will ash in the
direction of the turn or
lane change.As you signal a turn or a lane change, if the
arrows ash more quickly than normal, a signal
bulb may be burned out and other drivers will not
see your turn signal.
If a bulb is burned out, replace it to help avoid an
accident. If the arrows do not go on at all when
you signal a turn, check for burned-out bulbs and a
blown fuse. SeeFuses and Circuit Breakers on
page 540.
Turn Signal On Chime
If your turn signal is left on for more than
3/4 of a mile (1.2 km), a chime will sound at
each ash of the turn signal and the message
TURN SIGNAL ON will also appear in the DIC.
To turn the chime and message off, move the turn
signal lever to the off position.
191

Following Distance
Stay at least twice as far behind the vehicle ahead
as you would when driving your vehicle without
a trailer. This can help you avoid situations
that require heavy braking and sudden turns.
Passing
You’ll need more passing distance up ahead when
you’re towing a trailer. And, because you’re a
good deal longer, you’ll need to go much farther
beyond the passed vehicle before you can
return to your lane.
Backing Up
Hold the bottom of the steering wheel with
one hand. Then, to move the trailer to the left, just
move that hand to the left. To move the trailer
to the right, move your hand to the right. Always
back up slowly and, if possible, have someone
guide you.
Making Turns
Notice:Making very sharp turns while
trailering could cause the trailer to come in
contact with the vehicle. Your vehicle could be
damaged. Avoid making very sharp turns
while trailering.
When you’re turning with a trailer, make wider
turns than normal. Do this so your trailer
won’t strike soft shoulders, curbs, road signs,
trees or other objects. Avoid jerky or sudden
maneuvers. Signal well in advance.
Turn Signals When Towing a Trailer
The arrows on your instrument panel will
ash whenever you signal a turn or lane change.
Properly hooked up, the trailer lamps will also
ash, telling other drivers you’re about to
turn, change lanes or stop.
When towing a trailer, the arrows on your
instrument panel will ash for turns even if the bulbs
on the trailer are burned out. Thus, you may think
drivers behind you are seeing your signal when
they are not. It’s important to check occasionally to
be sure the trailer bulbs are still working.
417

Service.........................................................426
Accessories and Modications....................426
California Proposition 65 Warning...............427
Doing Your Own Service Work...................427
Adding Equipment to the Outside of
Your Vehicle...........................................428
Fuel..............................................................428
Gasoline Octane........................................428
Gasoline Specications...............................428
California Fuel............................................429
Additives....................................................429
Fuel E85 (85% Ethanol).............................430
Fuels in Foreign Countries.........................431
Filling the Tank..........................................432
Filling a Portable Fuel Container................434
Checking Things Under the Hood..............434
Hood Release............................................435
Engine Compartment Overview...................436
Engine Oil..................................................438
Engine Oil Life System...............................441
Engine Air Cleaner/Filter.............................443
Automatic Transmission Fluid.....................445
Engine Coolant...........................................449Coolant Surge Tank Pressure Cap.............451
Engine Overheating....................................452
Overheated Engine Protection
Operating Mode......................................454
Cooling System..........................................455
Engine Fan Noise......................................460
Power Steering Fluid..................................461
Windshield Washer Fluid............................462
Brakes.......................................................463
Battery.......................................................466
Jump Starting.............................................467
Rear Axle.....................................................472
Four-Wheel Drive.........................................473
Front Axle....................................................474
Headlamp Aiming........................................475
Bulb Replacement........................................478
Halogen Bulbs............................................478
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps.......................................478
License Plate Lamp....................................480
Replacement Bulbs....................................481
Section 5 Service and Appearance Care
423

Bulb Replacement
For the proper type of replacement bulbs, see
Replacement Bulbs on page 481.
For any bulb changing procedure not listed in this
section, contact your dealer.
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.
Taillamps, Turn Signal, Stoplamps
and Back-up Lamps
A. Taillamp/Turn Signal
Lamp
B. Back-up Lamp
C. Stoplamp/Taillamp
To replace one of these bulbs, do the following:
1. Open the liftgate. SeePower Liftgate on
page 125for more information.
478

Replacement Bulbs
Exterior Lamp Bulb Number
Back-up Lamp 7441
License Plate Lamp 168
Rear Turn Signal Lamp, Taillamp,
and Stoplamp3057
For replacement bulbs not listed here, contact
your dealer.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for
wear or cracking. SeeScheduled Maintenance
on page 555.
Replacement blades come in different types and
are removed in different ways. To replace the
wiper blade assembly, do the following:
1. Pull the windshield wiper arm connector away
from the windshield.
2. Squeeze the grooved areas on each side of
the blade, and rotate the blade assembly
away from the arm connector.
481

Appearance Care (cont.)
Vehicle Care/Appearance Materials........... 537
Washing Your Vehicle............................... 532
Weatherstrips............................................ 531
Windshield, Backglass, and Wiper Blades.... 534
Ashtray(s)..................................................... 209
Audio System(s)........................................... 274
Audio Steering Wheel Controls................. 334
Care of Your CD and DVD Player............. 337
Care of Your CDs and DVDs.................... 336
Navigation/Radio System,
see Navigation Manual.......................... 321
Radio with CD.......................................... 278
Radio with CD and DVD........................... 295
Rear Seat Audio (RSA)............................. 332
Rear Side Window Antenna...................... 337
Setting the Time................................276, 277
Theft-Deterrent Feature............................. 334
Understanding Radio Reception................ 335
XM™ Satellite Radio Antenna System....... 337
Automatic Headlamp System........................ 201
Automatic Transmission
Fluid......................................................... 445
Operation.................................................. 142
Autoride
®..................................................... 405
Auxiliary Roof Mounted Lamp Switch........... 203
B
Battery......................................................... 466
Run-Down Protection................................ 204
Before Leaving on a Long Trip..................... 380
Bench Seat, Split (60/40)............................... 20
Brake
Anti-Lock Brake System (ABS).................. 345
Emergencies............................................. 347
Parking..................................................... 151
System Warning Light............................... 232
Brake Pedal, Throttle.................................... 140
Brakes......................................................... 463
Braking........................................................ 344
Braking in Emergencies................................ 347
Break-In, New Vehicle.................................. 136
Bucket Seats, Rear........................................ 26
Bulb Replacement........................................ 478
Halogen Bulbs.......................................... 478
Headlamp Aiming...................................... 475
License Plate Lamps................................. 480
Replacement Bulbs................................... 481
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps..................................... 478
Buying New Tires......................................... 500
594