2007 GMC ACADIA fuel cap

This light should come on, as a check to show
you it is working, when the ignition is on and the
engine is not running. If the light does not
come on, have it repaired. This light will also
come on during a malfunction in one of two ways:
Light Flashing— A misre condition has
been detected. A misre increases vehicle
emissions and could damage the emission
control system on your vehicle. Diagnosis and
service might be required.
Light On Steady— An emission control
system malfunction has been detected on
your vehicle. Diagnosis and service might be
required.
If the Light is Flashing
The following can prevent more serious damage
to your vehicle:
Reduce vehicle speed.
Avoid hard accelerations.
Avoid steep uphill grades.
If you are towing a trailer, reduce the
amount of cargo being hauled as soon
as it is possible.If the light stops ashing and remains on steady,
see “If the Light Is On Steady” following.
If the light continues to ash, when it is safe to
do so, stop the vehicle. Find a safe place to
park the vehicle. Turn the key off, wait at least
10 seconds, and restart the engine. If the
light remains on steady, see “If the Light Is On
Steady” following. If the light is still ashing, follow
the previous steps and see your dealer/retailer
for service as soon as possible.
If the Light Is On Steady
You might be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If so, reinstall the fuel cap, making sure to fully
install the cap. SeeFilling the Tank on page 390.
The diagnostic system can determine if the
fuel cap has been left off or improperly installed.
A loose or missing fuel cap allows fuel to
evaporate into the atmosphere. A few driving
trips with the cap properly installed should
turn the light off.
227

Fuel Gage
When the ignition is on, the fuel gage tells you
about how much fuel you have left in your tank.
The gage will rst indicate empty before you
are out of fuel, and you should get more fuel as
soon as possible.When the fuel tank is low on fuel, the FUEL
LEVEL LOW message will appear on the
Driver Information Center (DIC). For more
information seeDIC Warnings and Messages
on page 244.
Here are some situations you may experience with
your fuel gage. None of these indicate a problem
with the fuel gage.
At the gas station, the fuel pump shuts off
before the gage reads full.
It takes a little more or less fuel to ll up than
the fuel gage indicated. For example, the
gage may have indicated the tank was half full,
but it actually took a little more or less than
half the tank’s capacity to ll the tank.
The gage goes back to empty when you turn
off the ignition.
United StatesCanada
231

SERVICE TRANSMISSION
This message displays when there is a problem
with the transmission. See your dealer/retailer
for service.
SERVICE VEHICLE SOON
This message displays when a non-emissions
related malfunction occurs. Have the vehicle
serviced by your dealer/retailer as soon as
possible.
SPEED LIMITED TO XXX MPH (KM/H)
This message displays when your vehicle speed
is limited to 80 mph (128 km/h) because the
vehicle detects a problem in the speed variable
assist steering system. Have your vehicle serviced
by your dealer/retailer.
STARTING DISABLED SERVICE
THROTTLE
This message displays when your vehicle’s throttle
system is not functioning properly. Have your
vehicle serviced by your dealer/retailer.
THEFT ATTEMPTED
This message displays if the content theft-deterrent
system has detected a break-in attempt while
you were away from your vehicle. SeeContent
Theft-Deterrent on page 118for more information.
TIGHTEN GAS CAP
This message may display along with the check
engine light on the instrument panel cluster if
the vehicle’s fuel cap is not tightened properly.
SeeMalfunction Indicator Lamp on page 226.
Reinstall the fuel cap fully. SeeFilling the Tank
on page 390. The diagnostic system can determine
if the fuel cap has been left off or improperly
installed. A loose or missing fuel cap allows fuel
to evaporate into the atmosphere. A few driving
trips with the cap properly installed should turn
this light and message off.
253

Item Description Total
AVehicle Capacity Weight
for Example 3=1,000 lbs (453 kg)
BSubtract
Occupant Weight
200 lbs (91 kg)×5=1,000 lbs (453 kg)
CAvailable Cargo
Weight=0 lbs (0 kg)
Refer to your vehicle’s tire and loading
information label for specic information about
your vehicle’s capacity weight and seating
positions. The combined weight of the driver,
passengers, and cargo should never exceed your
vehicle’s capacity weight.
Certication/Tire Label
A vehicle specic Certication/Tire label is
attached to the rear edge of the driver’s door.
The label shows the gross weight capacity of your
vehicle. This is called the Gross Vehicle Weight
Rating (GVWR). The GVWR includes the weight of
the vehicle, all occupants, fuel, and cargo.
The Certication/Tire label also tells you the
maximum weights for the front and rear axles,
called the Gross Axle Weight Rating (GAWR).
Example 3
365

Towing a Trailer
{CAUTION:
If you do not use the correct equipment
and drive properly, you can lose control
when you pull a trailer. For example, if the
trailer is too heavy, the brakes may not
work well — or even at all. You and your
passengers could be seriously injured.
You may also damage your vehicle; the
resulting repairs would not be covered by
your warranty. Pull a trailer only if you
have followed all the steps in this section.
Ask your dealer/retailer for advice and
information about towing a trailer with
your vehicle.
To identify the trailering capacity of your vehicle,
you should read the information in “Weight of
the Trailer” that appears later in this section.But trailering is different than just driving your
vehicle by itself. Trailering means changes
in handling, acceleration, braking, durability and
fuel economy. Successful, safe trailering takes
correct equipment, and it has to be used properly.
That’s the reason for this part. In it are many
time-tested, important trailering tips and safety
rules. Many of these are important for your safety
and that of your passengers. So please read
this section carefully before you pull a trailer.
Load-pulling components such as the engine,
transmission, rear axle, wheel assemblies and tires
are forced to work harder against the drag of
the added weight. The engine is required
to operate at relatively higher speeds and under
greater loads, generating extra heat. What’s more,
the trailer adds considerably to wind resistance,
increasing the pulling requirements.
371

Service........................................................ 385
Accessories and Modications................... 385
California Proposition 65 Warning.............. 386
Doing Your Own Service Work.................. 386
Adding Equipment to the Outside
of Your Vehicle...................................... 387
Fuel............................................................. 387
Gasoline Octane........................................ 388
Gasoline Specications.............................. 388
California Fuel........................................... 388
Additives................................................... 389
Fuels in Foreign Countries........................ 390
Filling the Tank......................................... 390
Filling a Portable Fuel Container............... 393
Checking Things Under the Hood.............. 394
Hood Release........................................... 395
Engine Compartment Overview.................. 396
Engine Oil................................................. 397
Engine Oil Life System.............................. 400
Engine Air Cleaner/Filter............................ 402
Automatic Transmission Fluid.................... 404
Engine Coolant.......................................... 406
Radiator Pressure Cap.............................. 410
Engine Overheating................................... 410Overheated Engine Protection
Operating Mode..................................... 412
Cooling System......................................... 413
Power Steering Fluid................................. 419
Windshield Washer Fluid........................... 420
Brakes...................................................... 421
Battery...................................................... 424
Jump Starting............................................ 425
All-Wheel Drive........................................... 430
Headlamp Aiming........................................ 431
Bulb Replacement....................................... 432
High Intensity Discharge (HID) Lighting..... 432
Halogen Bulbs........................................... 432
License Plate Lamp................................... 433
Replacement Bulbs................................... 433
Windshield Wiper Blade Replacement....... 434
Tires............................................................ 435
Tire Sidewall Labeling............................... 436
Tire Terminology and Denitions............... 439
Ination - Tire Pressure............................. 442
Tire Pressure Monitor System................... 444
Tire Inspection and Rotation...................... 448
When It Is Time for New Tires.................. 450
Section 5 Service and Appearance Care
383

The tethered fuel cap is located behind a hinged
fuel door on the driver’s side of the vehicle.
To open the fuel door, push the rearward center
edge in and release. The door will pop open.To remove the fuel cap, turn it slowly
counterclockwise. The fuel cap has a spring
in it; if the cap is released too soon, it will
spring back to the right.
While refueling, hang the tethered fuel cap
from the hook on the fuel door.
391

{CAUTION:
Fuel can spray out on you if you open the
fuel cap too quickly. If you spill fuel and
then something ignites it, you could be
badly burned. This spray can happen if
your tank is nearly full, and is more likely
in hot weather. Open the fuel cap slowly
and wait for any hiss noise to stop.
Then unscrew the cap all the way.
Be careful not to spill fuel. Do not top off or overll
the tank and wait a few seconds after you have
nished pumping before removing the nozzle.
Clean fuel from painted surfaces as soon as
possible. SeeWashing Your Vehicle on page 482.
When replacing the fuel cap, turn it clockwise until
it clicks. Make sure the cap is fully installed.
The diagnostic system can determine if the fuel
cap has been left off or improperly installed.
This would allow fuel to evaporate into the
atmosphere. SeeMalfunction Indicator Lamp
on page 226.If your vehicle has a Driver Information Center
(DIC), the TIGHTEN GAS CAP message will be
displayed if the fuel cap is not properly installed.
{CAUTION:
If a re starts while you are refueling, do
not remove the nozzle. Shut off the ow
of fuel by shutting off the pump or by
notifying the station attendant. Leave the
area immediately.
Notice:If you need a new fuel cap, be sure to
get the right type. Your dealer/ retailer can
get one for you. If you get the wrong type,
it may not t properly. This may cause your
malfunction indicator lamp to light and
may damage your fuel tank and emissions
system. SeeMalfunction Indicator Lamp
on page 226.
392