CHEVROLET KODIAK 2007 Owners Manual

Towing
Towing Your Vehicle
Consult your dealer or a professional towing service
if you need to have your disabled vehicle towed.
SeeRoadside Assistance Program on page 408.
Releasing Air-Operated Parking Brakes
If your vehicle has air brakes, you could have a
special towing problem. If your vehicle has to
be towed because of a complete loss of air
pressure from both systems, the parking brakes
will have automatically engaged. The tow operator
can release the brakes manually by using the
following steps. Then your vehicle can be towed
with all wheels or only the rear wheels on
the ground.
1. Block the wheels of the vehicle.2. Remove the release stud and nut from the
side of the brake chamber. Some chambers
have studs which are visible at all times.
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3. Remove the rubber
cap from the rear
of the chamber.
4. Put the release stud, nut and flat washer into
the chamber.
5. Turn the stud clockwise a quarter of a turn.6. Turn the stud nut
clockwise several
turns to release
the brakes.
Follow the same
procedure to
release the other
brake or brakes.
7. At the repair facility, apply air pressure of at
least 70 psi (480 kPa) to the brake chambers,
either from an external air supply or the
vehicle’s air system.
8. Turn the stud nut counterclockwise several
turns. Remove the stud from the chamber.
9. Replace the stud and washer and tighten the
nut into the side of the chamber.
10. Replace the rubber cap.
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Trailer Connections
Heavy-Duty Trailer Wiring Package
Your vehicle may be equipped with an eight-wire
trailer towing harness. This harness, with a
seven-pin universal heavy-duty trailer connector,
is attached to a bracket on the platform hitch.
The Center High-Mounted Stoplamp (CHMSL)
wire is tied next to the trailer wiring harness for
use with a trailer.
The eight-wire harness contains the following
trailer circuits:
•Yellow: Left Stop/Turn Signal
•Dark Green: Right Stop/Turn Signal
•Brown: Taillamps
•White: Ground
•Light Green: Back-up Lamps
•Light Blue: CHMSL
•Red: Battery Feed
•Dark Blue: Trailer Brake
Trailer Connections
(C7/C8 Models Only)
If your vehicle has these trailer connections, they
are located at the rear of the cab for a tractor
and at the rear of the chassis when towing
a trailer. There will be an air connection and an
electrical connection.
Be sure that the couplings to the trailer are
made correctly.
Air Connections
If you are not connecting the trailer air line
connections to another piece of equipment,
be sure to replace their protective caps.
Electrical Connections
This system is a seven-wire cable that will
connect to the trailer, supplying power to the
trailer’s lighting system. When not in use, it
is stored in the trailer air-hose storage bracket.
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✍NOTES
244

Service........................................................ 248
California Proposition 65 Warning.............. 248
Doing Your Own Service Work.................. 249
Engine Fan Breakage................................ 250
Fuel............................................................. 251
Gasoline Octane........................................ 251
Gasoline Specifications.............................. 251
Additives................................................... 252
Diesel Engine Fuel.................................... 253
What Fuel to Use...................................... 253
Very Cold Weather Operation.................... 256
Water in Fuel............................................ 256
Running Out of Fuel.................................. 262
Fuel Filter Replacement............................. 263
Fuels in Foreign Countries........................ 264
Filling the Tank......................................... 264
Filling a Portable Fuel Container............... 266Checking Things Under the Hood.............. 266
Hood Latches............................................ 267
Engine Oil (Caterpillar
®Diesel Engine)...... 268
Engine Oil (Gasoline Engine).................... 268
Engine Oil (DURAMAX
®/Isuzu Diesel
Engine).................................................. 272
Engine Oil Life System
(Gasoline Engine).................................. 276
Engine Oil Life System
(DURAMAX
®Diesel)............................... 278
Engine Oil Life System
(Caterpillar
®Diesel Engine).................... 279
Engine Air Cleaner/Filter............................ 280
Automatic Transmission Fluid.................... 282
Manual Transmission Fluid........................ 283
Engine Coolant (Gas and
DURAMAX
®/Isuzu Engines).................... 284
Engine Coolant (Caterpillar®Diesel
Engines)................................................ 287
Coolant Surge Tank Pressure Cap............ 288
Section 5 Service and Appearance Care
245

Engine Overheating................................... 288
Cooling System (Gas and
DURAMAX
®/Isuzu Engines).................... 290
Engine Fan Noise..................................... 294
Power Steering Fluid................................. 295
Windshield Washer Fluid........................... 296
Brakes...................................................... 297
Battery...................................................... 304
Jump Starting............................................ 305
Rear Axle.................................................... 311
Rear Axle Shift Motor................................ 312
Four-Wheel Drive........................................ 312
Front Axle................................................... 313
Noise Control System................................. 314
Tampering with Noise Control System
Prohibited.............................................. 314
Bulb Replacement....................................... 315
Windshield Wiper Blade Replacement....... 316Other Service Items.................................... 317
Fuel Filter.................................................. 317
Primary Fuel Filter and Water Separator...... 317
Secondary Fuel Filter and Water
Separator/Heater (Caterpillar
®Diesel)...... 318
Automatic Ether Injection System
(Caterpillar
®Diesel)................................ 318
Front Wheel Bearings with
Oil-Filled Hubs....................................... 319
Air Conditioning System............................ 320
Tires............................................................ 321
Inflation - Tire Pressure............................. 322
Wheel Loading.......................................... 323
Dual Tire Operation................................... 323
When It Is Time for New Tires.................. 324
Wheel Alignment and Tire Balance............ 324
Tightening the Wheel Nuts........................ 325
Wheel Replacement.................................. 328
If a Tire Goes Flat.................................... 330
Section 5 Service and Appearance Care
246

Appearance Care........................................ 331
Cleaning the Inside of Your Vehicle.......... 331
Fabric/Carpet............................................. 333
Instrument Panel, Vinyl, and Other
Plastic Surfaces..................................... 334
Care of Safety Belts.................................. 334
Weatherstrips............................................ 334
Washing Your Vehicle............................... 335
Cleaning Exterior Lamps/Lenses................ 335
Finish Care............................................... 335
Windshield and Wiper Blades.................... 336
Aluminum or Chrome-Plated Wheels......... 337
Tires......................................................... 337
Sheet Metal Damage................................. 337
Finish Damage.......................................... 338
Underbody Maintenance............................ 338
Chemical Paint Spotting............................ 338Vehicle Identication.................................. 340
Vehicle Identification Number (VIN)........... 340
Service Parts Identification Label............... 340
Electrical System........................................ 340
Add-On Electrical Equipment..................... 340
Headlamp Wiring....................................... 341
Windshield Wiper Fuses............................ 341
Fusible Links............................................. 341
Power Windows and Other Power
Options.................................................. 341
Fuses and Circuit Breakers....................... 341
Instrument Panel Fuse Block..................... 342
Underhood Fuse Block.............................. 344
Capacities and Specications.................... 347
Normal Maintenance Replacement Parts..... 352
Engine Drive Belt Routing......................... 355
Section 5 Service and Appearance Care
247

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 fluids, and some component
wear by-products contain and/or emit these
chemicals.
248

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 415.
Your vehicle has an airbag system. Before
attempting to do your own service work, see
Servicing Your Airbag-Equipped Vehicle on
page 80.
You should keep a record with all parts receipts
and list the mileage and the date of any service
work you perform. SeePart D: Maintenance
Record on page 400.
249

Engine Fan Breakage
{CAUTION:
Changing the Fan Drive Ratio or Engine
Governed Speed:
If you change the fan drive ratio or
increase the governed speed of the
engine, you may increase stress and the
fan could eventually fail. If the fan breaks
apart while it is rotating, pieces can cause
severe injury to anyone — such as a
service technician — who is nearby. And,
of course, the pieces can severely
damage the vehicle. Do not change the
fan drive ratio or increase the governed
speed of the vehicle without getting the
necessary information from your dealer.
CAUTION: (Continued)
CAUTION: (Continued)
Winter Fronts, Grille Covers or
Obstructions:
Winter Fronts, grille covers or other
add-on equipment causing obstructions in
front or behind the fan should not be used
on this vehicle. If this causes the fan to
eventually break apart while it is rotating,
the pieces can cause severe injury to
anyone nearby, such as a service
technician working on the engine, and of
course the pieces can severely damage
the vehicle.
250