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Maintenance When Trailer Towing
Your vehicle will need service more often when you’re
pulling a trailer. SeeScheduled Maintenance on
page 6-4for more information. Things that are especially
important in trailer operation are automatic transmission
uid (don’t over ll), engine oil, axle lubricant, belt,
cooling system and brake system. Each of these is
covered in this manual. If you’re trailering, it’s 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
The trailer wiring is a four-wire harness assembly.
The wires are blunted and taped to the wiring harness.
The harness and wiring are stored under the vehicle
on the driver’s side. The harness has no connector and
should be wired by a quali ed electrical technician.
The technician can use the following color code chart
when connecting the wiring harness to your trailer.
Black: Ground wire.
Yellow: Left turn lamps.
Dark Green: Right turn lamps.
Brown: Parking lamps.
Securely attach the harness to the trailer, then tape
or strap it to your vehicle’s frame rail. Be sure you leave
it loose enough so the wiring doesn’t bend or break,
but not so loose that it drags on the ground.
Store the harness in its original place. Wrap the harness
together and tie it neatly so it won’t be damaged.
4-47
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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 Your Tank............................................5-8
Filling a Portable Fuel Container.....................5-10
Checking Things Under the Hood....................5-10
Hood Release..............................................5-11
Engine Compartment Overview.......................5-12
Engine Oil...................................................5-13
Engine Oil Life System..................................5-16
Engine Cover...............................................5-18
Engine Air Cleaner/Filter................................5-19
Automatic Transmission Fluid.........................5-21
Manual Transmission Fluid.............................5-24
Hydraulic Clutch...........................................5-25
Engine Coolant.............................................5-26
Coolant Surge Tank Pressure Cap..................5-28Engine Overheating.......................................5-28
Cooling System............................................5-30
Power Steering Fluid.....................................5-33
Windshield Washer Fluid................................5-34
Brakes........................................................5-35
Battery........................................................5-38
Jump Starting...............................................5-38
Rear Axle.......................................................5-43
Headlamp Aiming...........................................5-44
Bulb Replacement..........................................5-44
Halogen Bulbs..............................................5-44
Headlamps..................................................5-44
Front Turn Signal, Sidemarker and
Parking Lamps..........................................5-46
Taillamps.....................................................5-48
Back-Up Lamps............................................5-49
Replacement Bulbs.......................................5-49
Windshield Wiper Blade Replacement..............5-50
Tires..............................................................5-52
Tire Sidewall Labelling...................................5-53
Tire Terminology and De nitions.....................5-55
In ation - Tire Pressure.................................5-58
Tire Inspection and Rotation...........................5-60
Section 5 Service and Appearance Care
5-1
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When It Is Time for New Tires.......................5-60
Buying New Tires.........................................5-61
Uniform Tire Quality Grading..........................5-62
Wheel Alignment and Tire Balance..................5-63
Wheel Replacement......................................5-63
Tire Chains..................................................5-66
If a Tire Goes Flat........................................5-66
Tire In ator Kit.............................................5-68
Air Compressor............................................5-70
Appearance Care............................................5-74
Fabric/Carpet...............................................5-74
Vinyl...........................................................5-76
Leather.......................................................5-76
Instrument Panel..........................................5-76
Interior Plastic Components............................5-76
Glass Surfaces.............................................5-76
Care of Safety Belts......................................5-77
Weatherstrips...............................................5-77
Washing Your Vehicle...................................5-77
Cleaning Exterior Lamps/Lenses.....................5-78
Finish Care..................................................5-78
Windshield and Wiper Blades.........................5-79Aluminum or Chrome-Plated Wheels................5-79
Tires...........................................................5-80
Sheet Metal Damage.....................................5-80
Finish Damage.............................................5-80
Underbody Maintenance................................5-81
Chemical Paint Spotting.................................5-81
Vehicle Care/Appearance Materials..................5-81
Vehicle Identi cation......................................5-82
Vehicle Identi cation Number (VIN).................5-82
Service Parts Identi cation Label.....................5-83
Electrical System............................................5-83
Add-On Electrical Equipment..........................5-83
Headlamps..................................................5-83
Windshield Wiper Fuses................................5-84
Power Windows and Other Power Options.......5-84
Fuses and Circuit Breakers............................5-84
Floor Console Fuse Block..............................5-85
Engine Compartment Fuse Block....................5-88
Relay Center................................................5-91
Capacities and Speci cations..........................5-93
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
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 7-12.
Your vehicle has an airbag system. Before attempting
to do your own service work, seeServicing Your
Airbag-Equipped Vehicle on page 1-51.
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 6-15.{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.
5-4
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