Backing Up
Hold the bottom of the steering
wheel with one hand. Then, to move
the trailer to the left, 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. The vehicle could be
damaged. Avoid making very
sharp turns while trailering.
When turning with a trailer, make
wider turns than normal. Do this so
the 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 the instrument panel
flash whenever signaling a turn
or lane change. Properly hooked up,
the trailer lamps also flash, telling
other drivers the vehicle is turning,
changing lanes or stopping.
When towing a trailer, the arrows on
the instrument panel flash for turns
even if the bulbs on the trailer are
burned out. For this reason you
may think other drivers are seeing
the signal when they are not. It is
important to check occasionally to be
sure the trailer bulbs are still working.
Driving On Grades
Reduce speed and shift to a lower
gear before starting down a long or
steep downgrade. If the transmission
is not shifted down, the brakes might
have to be used so much that they
would get hot and no longer
work well.Vehicles with an automatic
transmission can tow in D (Drive).
Shift the transmission to a lower
gear if the transmission shifts
too often under heavy loads and/or
hilly conditions. For vehicles with
a manual transmission, it is
better not to use the highest gear.
When towing at high altitude on
steep uphill grades, consider the
following: Engine coolant will boil at
a lower temperature than at normal
altitudes. If the engine is turned off
immediately after towing at high
altitude on steep uphill grades,
the vehicle may show signs similar
to engine overheating. To avoid
this, let the engine run while
parked, preferably on level ground,
with the automatic transmission
in P (Park) for a few minutes
before turning the engine off.
Driving and Operating 8-51
Maintenance When Trailer
Towing
The vehicle needs service more
often when pulling a trailer. See this
manual’s Maintenance Schedule or
Index for more information. Things
that are especially important in trailer
operation are automatic transmission
fluid, engine oil, axle lubricant, belts,
cooling system and brake system.
It is a good idea to inspect these
before and during the trip.
Check periodically to see that all
hitch nuts and bolts are tight.
Engine Cooling When Trailer
Towing
The cooling system may temporarily
overheat during severe operating
conditions. SeeEngine Overheating
on page 9-24.
Trailer Towing
Before pulling a trailer, there are
three important considerations that
have to do with weight:
•The weight of the trailer.
•The weight of the trailer tongue.
•The total weight on your
vehicle’s tires.
Weight of the Trailer
How heavy can a trailer safely be?
It should never weigh more than
1,000 lbs (454 kg). But even
that can be too heavy.
It depends on how the rig is used.
For example, speed, altitude, road
grades, outside temperature and
how much the vehicle is used to pull
a trailer are all important. It candepend on any special equipment
on the vehicle, and the amount of
tongue weight the vehicle can carry.
See “Weight of the Trailer Tongue”
later in this section for more
information.
Maximum trailer weight is calculated
assuming only the driver is in the tow
vehicle and it has all the required
trailering equipment. The weight
of additional optional equipment,
passengers and cargo in the tow
vehicle must be subtracted from
the maximum trailer weight.
Ask your dealer/retailer for our
trailering information or advice, or
you can write us at our Customer
Assistance Offices. SeeCustomer
Assistance Offices on page 12-3
for more information.
Driving and Operating 8-53
Vehicle Care
General InformationGeneral Information...............9-2
California Proposition 65
Warning.............................9-2
California Perchlorate
Materials Requirements........9-3
Accessories and
Modifications.......................9-3
Vehicle ChecksDoing Your Own
Service Work......................9-4
Hood...................................9-5
Engine Compartment
Overview............................9-6
Engine Cover.......................9-9
Engine Oil..........................9-10
Engine Oil Life System.........9-13
Automatic Transmission
Fluid................................9-14
Manual Transmission Fluid. . . .9-15
Hydraulic Clutch..................9-15
Engine Air Cleaner/Filter.......9-16
Cooling System...................9-17
Engine Coolant...................9-19
Engine Overheating.............9-24
Power Steering Fluid............9-25Washer Fluid......................9-26
Brakes...............................9-27
Brake Fluid.........................9-28
Battery...............................9-29
Rear Axle...........................9-30
Starter Switch Check............9-31
Automatic Transmission
Shift Lock Control
System Check...................9-32
Ignition Transmission
Lock Check.......................9-32
Park Brake and P (Park)
Mechanism Check..............9-32
Wiper Blade Replacement......9-33Headlamp AimingHeadlamp Aiming................9-34
Bulb ReplacementBulb Replacement...............9-37
Halogen Bulbs....................9-37
High Intensity Discharge
(HID) Lighting....................9-37
Headlamps, Front Turn
Signal and Parking Lamps
(Base Vehicle)...................9-37
Headlamps, Front Turn
Signal and Parking Lamps
(Up-Level Vehicle)..............9-38
Daytime Running
Lamps (DRL)....................9-39
Fog Lamps.........................9-40Taillamps, Turn Signal, and
Stoplamps.........................9-40
License Plate Lamp.............9-40
Replacement Bulbs..............9-41
Electrical SystemElectrical System
Overload...........................9-41
Fuses and Circuit
Breakers...........................9-42
Engine Compartment
Fuse Block.......................9-42
Instrument Panel
Fuse Block.......................9-45
Rear Compartment
Fuse Block.......................9-46
Wheels and TiresTires..................................9-48
Winter Tires........................9-48
Tire Sidewall Labeling..........9-49
Tire Designations.................9-51
Tire Terminology and
Definitions.........................9-52
Tire Pressure......................9-54
Tire Pressure for
High-Speed Operation........9-56
Tire Pressure Monitor
System.............................9-56
Tire Pressure Monitor
Operation..........................9-57
Tire Inspection....................9-61
Vehicle Care 9-1
A. Underhood Electrical Center.
SeeEngine Compartment
Fuse Block on page 9-42.
B. Engine Coolant Recovery Bottle
and Cap. SeeEngine Coolant
on page 9-19.
C.Engine Cover on page 9-9.
D. Engine Cooling Fans (Out of
View). SeeCooling System
on page 9-17.
E. Radiator Fill Cap (Out of View).
SeeEngine Coolant on
page 9-19.
F. Power Steering Reservoir and
Cap (Out of View). SeePower
Steering Fluid on page 9-25.
G. Engine Oil Fill Cap. SeeEngine
Oil on page 9-10.H. Engine Oil Dipstick (Out of
View). SeeEngine Oil on
page 9-10.
I. Brake Master Cylinder and
Hydraulic Clutch (if equipped with
manual transmission) Reservoir.
SeeBrakes on page 9-27or
Hydraulic Clutch on page 9-15.
J. Remote Positive (+) Terminal.
SeeBattery on page 9-29.
K.Engine Air Cleaner/Filter on
page 9-16.
L. Windshield Washer Fluid
Reservoir. SeeWasher
Fluid on page 9-26.
Vehicle Care 9-7
A. Underhood Electrical Center.
SeeEngine Compartment
Fuse Block on page 9-42.
B. Engine Coolant Recovery Bottle
and Cap. SeeEngine Coolant
on page 9-19.
C. Engine Oil Dipstick. SeeEngine
Oil on page 9-10.
D. Engine Oil Fill Cap (Out of
View). SeeEngine Oil on
page 9-10.
E.Engine Cover on page 9-9.
F. Engine Cooling Fans (Out of
View). SeeCooling System
on page 9-17.
G. Power Steering Reservoir and
Cap (Under Engine Cover).
SeePower Steering Fluid
on page 9-25.H. Brake Master Cylinder and
Hydraulic Clutch (if equipped
with manual transmission)
Reservoir. SeeBrakes on
page 9-27orHydraulic Clutch
on page 9-15.
I. Remote Positive (+) Terminal.
SeeBattery on page 9-29.
J.Engine Air Cleaner/Filter on
page 9-16.
K. Windshield Washer Fluid
Reservoir. SeeWasher Fluid
on page 9-26.
L. Radiator Fill Cap. SeeEngine
Coolant on page 9-19.Engine Cover
3.6 L V6 Engine Cover
To remove:
1. Remove the engine oil fill
cap (B).
2. Lift the engine cover (A) to
disengage one front attachment
point.
3. Pull engine cover forward to
disengage from two rear tabs.
4. Reverse Steps 1 through 3 to
reinstall engine cover.
Vehicle Care 9-9
6.2 L V8 Engine Cover
(L99 Engine shown
LS3 similar)
To remove:
1. Remove the engine oil fill
cap (A).
2. Lift the engine cover (B) to
disengage two front attachment
points.
3. Pull engine cover forward to
disengage from horizontal
rear attachments.
4. Reverse Steps 1 through 3 to
reinstall engine cover.
Engine Oil
Checking Engine Oil
It is a good idea to check the
engine oil level at each fuel fill.
In order to get an accurate reading,
the oil must be warm and the
vehicle must be on level ground.
The engine oil dipstick handle
is a yellow loop. SeeEngine
Compartment Overview on page 9-6
for the location of the engine oil
dipstick.
1. Turn off the engine and give the
oil several minutes to drain back
into the oil pan. If this is not done,
the oil dipstick might not show the
actual level.
2. Pull out the dipstick and clean
it with a paper towel or cloth,
then push it back in all the way.
Remove it again, keeping the tip
down, and check the level.
When to Add Engine Oil
If the oil is below the cross-hatched
area at the tip of the dipstick,
add at least one liter/quart of the
recommended oil. This section
explains what kind of oil to use.
For engine oil crankcase capacity,
seeCapacities and Speci cations
on page 11-2.
Notice:Do not add too much oil.
If the engine has so much oil
that the oil level gets above the
cross-hatched area that shows
the proper operating range,
the engine could be damaged.
SeeEngine Compartment Overview
on page 9-6for the location of the
engine oil fill cap.
Add enough oil to put the level
somewhere in the proper operating
range. Push the dipstick all the
way back in when through.
9-10 Vehicle Care
What Kind of Engine Oil to
Use (V6 Engine)
Look for three things:
•GM6094M
Use only an oil that meets GM
Standard GM6094M.
•SAE 5W-30
SAE 5W-30 is best for the
vehicle. These numbers on an
oil container show its viscosity,
or thickness. Do not use
other viscosity oils such
as SAE 20W-50.
•American Petroleum Institute
(API) starburst symbol
Oils meeting these requirements
should have the starburst symbol
on the container. This symbol
indicates that the oil has been
certified by the American
Petroleum Institute (API).Notice:Use only engine oil
identi ed as meeting GM Standard
GM6094M and showing the
American Petroleum Institute
Certi ed For Gasoline Engines
starburst symbol. Failure to use
the recommended oil can result
in engine damage not covered by
the vehicle warranty.
Cold Temperature Operation
If in an area of extreme cold,
where the temperature falls
below−29°C (−20°F), use either
an SAE 5W-30 synthetic oil or an
SAE 0W-30 engine oil. Both provide
easier cold starting for the engine at
extremely low temperatures. Always
use an oil that meets the required
specification, GM6094M.
Vehicle Care 9-11
What Kind of Engine Oil to Use
(V8 Engines)
Look for three things:
•GM4718M
This vehicle’s engine requires a
special oil meeting GM Standard
GM4718M. Oils meeting this
standard may be identified as
synthetic. However, not all
synthetic oils will meet this GM
standard. Use only an oil that
meets GM Standard GM4718M.
Notice:Using oils that do not
have the GM4718M Standard
designation can cause engine
damage not covered by the
vehicle warranty.
•SAE 5W-30
SAE 5W-30 is best for the
vehicle. These numbers on an
oil container show its viscosity,
or thickness. Do not use
other viscosity oils such
as SAE 20W-50.
•American Petroleum Institute
(API) starburst symbol
Oils meeting these requirements
should have the starburst symbol
on the container. This symbol
indicates that the oil has been
certified by the American
Petroleum Institute (API).
This vehicle’s engine was filled at
the factory with a Mobil 1
®synthetic
oil meeting all requirements for
this vehicle.
Substitute Engine Oil: When adding
oil to maintain engine oil level, oil
meeting GM Standard GM4718M
might not be available. You can add
substitute oil designated SAE 5W-30
with the starburst symbol at all
temperatures. Substitute oil not
meeting GM Standard GM4718M
should not be used for an oil change.
9-12 Vehicle Care