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Maintenance When Trailer Towing
Your vehicle will need service more often when you are
pulling a trailer. See the Maintenance Schedule for
more on this. Things that are especially important in
trailer operation are automatic transaxle uid, engine oil,
belts, cooling system and brake system. Each of
these is covered in this manual, and the Index will help
you nd them quickly. If you are trailering, it is a
good idea to review these sections before you start
your trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Trailer Wiring Harness
Your vehicle may be equipped with a four-pin trailer
towing harness. This harness has a four-pin trailer
connector that is attached to a bracket on the hitch
platform. The four-wire harness contains the following
trailer circuits:
Yellow: Left Stop/Turn Signal
Dark Green: Right Stop/Turn Signal
Brown: Running Lamps
White: Ground
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Page 235 of 364

Service............................................................5-3
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of Your
Vehicle......................................................5-5
Fuel................................................................5-5
Gasoline Octane............................................5-5
Gasoline Speci cations....................................5-5
California Fuel...............................................5-6
Additives.......................................................5-6
Fuels in Foreign Countries...............................5-7
Filling the Tank..............................................5-8
Filling a Portable Fuel Container.....................5-10
Checking Things Under the Hood....................5-10
Hood Release..............................................5-10
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-13
Engine Oil Life System..................................5-16
Engine Air Cleaner/Filter................................5-17
Automatic Transaxle Fluid..............................5-21
Engine Coolant.............................................5-21
Engine Overheating.......................................5-24
Overheated Engine Protection
Operating Mode........................................5-26
Cooling System............................................5-26
Windshield Washer Fluid................................5-31
Brakes........................................................5-33Battery........................................................5-35
Jump Starting...............................................5-36
All-Wheel Drive..............................................5-41
Bulb Replacement..........................................5-43
Halogen Bulbs..............................................5-43
Headlamps, Front Turn Signal, Sidemarker,
and Parking Lamps....................................5-43
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps.........................................5-46
Replacement Bulbs.......................................5-47
Windshield Wiper Blade Replacement..............5-48
Tires..............................................................5-49
Tire Sidewall Labelling...................................5-50
Tire Terminology and De nitions.....................5-52
In ation - Tire Pressure.................................5-55
Tire Inspection and Rotation...........................5-56
When It Is Time for New Tires.......................5-57
Buying New Tires.........................................5-58
Uniform Tire Quality Grading..........................5-59
Wheel Alignment and Tire Balance..................5-60
Wheel Replacement......................................5-61
Tire Chains..................................................5-62
If a Tire Goes Flat........................................5-63
Changing a Flat Tire.....................................5-64
Removing the Spare Tire and Tools................5-65
Section 5 Service and Appearance Care
5-1
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Removing the Flat Tire and Installing the
Spare Tire................................................5-66
Storing a Flat or Spare Tire and Tools............5-72
Compact Spare Tire......................................5-74
Appearance Care............................................5-74
Cleaning the Inside of Your Vehicle.................5-75
Fabric/Carpet...............................................5-76
Leather.......................................................5-77
Instrument Panel, Vinyl, and Other Plastic
Surfaces..................................................5-77
Care of Safety Belts......................................5-78
Weatherstrips...............................................5-78
Washing Your Vehicle...................................5-78
Cleaning Exterior Lamps/Lenses.....................5-78
Finish Care..................................................5-79
Windshield and Wiper Blades.........................5-79
Aluminum Wheels.........................................5-80
Tires...........................................................5-80Sheet Metal Damage.....................................5-80
Finish Damage.............................................5-81
Underbody Maintenance................................5-81
Chemical Paint Spotting.................................5-81
Vehicle Care/Appearance Materials..................5-82
Vehicle Identi cation......................................5-83
Vehicle Identi cation Number (VIN).................5-83
Service Parts Identi cation Label.....................5-83
Electrical System............................................5-84
Add-On Electrical Equipment..........................5-84
Windshield Wiper Fuses................................5-84
Power Windows and Other Power Options.......5-84
Fuses and Circuit Breakers............................5-84
Instrument Panel Fuse Block..........................5-85
Engine Compartment Fuse Block....................5-86
Capacities and Speci cations..........................5-89
Section 5 Service and Appearance Care
5-2
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Service
Your dealer knows your vehicle best and wants you to
be happy with it. We hope you will go to your dealer
for all your service needs. You will get genuine GM parts
and GM-trained and supported service people.
We hope you will want to keep your GM vehicle all GM.
Genuine GM parts have one of these marks:
California Proposition 65 Warning
Most motor vehicles, including this one, contain and/or
emit chemicals known to the State of California to
cause cancer and birth defects or other reproductive
harm. Engine exhaust, many parts and systems
(including some inside the vehicle), many uids, and
some component wear by-products contain and/or emit
these chemicals.
5-3
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Doing Your Own Service Work
{CAUTION:
You can be injured and your vehicle could be
damaged if you try to do service work on a
vehicle without knowing enough about it.
Be sure you have sufficient knowledge,
experience, the proper replacement parts,
and tools before you attempt any vehicle
maintenance task.
Be sure to use the proper nuts, bolts, and
other fasteners. English and metric
fasteners can be easily confused. If you
use the wrong fasteners, parts can later
break or fall off. You could be hurt.If you want to do some of your own service work, you
will want to use the proper service manual. It tells
you much more about how to service your vehicle than
this manual can. To order the proper service manual,
seeService Publications Ordering Information on
page 7-11.
Your vehicle has an airbag system. Before attempting to
do your own service work, seeServicing Your
Airbag-Equipped Vehicle on page 1-60.
You should keep a record with all parts receipts and list
the mileage and the date of any service work you
perform. SeeMaintenance Record on page 6-14.
5-4
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