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.
Engine Oil Additives / Engine Oil
Flushes
Do not add anything to the oil. The recommended
oils with the starburst symbol that meet GM Standard
GM4718M are all that is needed for good performance
and engine protection.
Engine oil system flushes are not recommended and
could cause engine damage not covered by the vehicle
warranty.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer that indicates when to
change the engine oil and filter. This is based on
engine revolutions and engine temperature, and not
on mileage. Based on driving conditions, the mileage at
which an oil change is indicated can vary considerably.
For the oil life system to work properly, the system must
be reset every time the oil is changed.
6-25
What to Use
{WARNING:
Adding only plain water to the cooling system
can be dangerous. Plain water, or some other
liquid such as alcohol, can boil before the proper
coolant mixture will. The vehicle's coolant warning
system is set for the proper coolant mixture.
With plain water or the wrong mixture, the engine
could get too hot but would not get the overheat
warning. The engine could catch fire and you or
others could be burned. Use a 50/50 mixture of
clean, drinkable water and DEX-COOL
®coolant.
Use a 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant. If using this mixture, nothing else
needs to be added. This mixture:
.Gives freezing protection down to −37°C (−34°F),
outside temperature.
.Gives boiling protection up to 129°C (265°F),
engine temperature.
.Protects against rust and corrosion.
.Will not damage aluminum parts.
.Helps keep the proper engine temperature. Notice:
If an improper coolant mixture is used,
the engine could overheat and be badly damaged.
The repair cost would not be covered by the vehicle
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core, and
other parts.
Notice: If extra inhibitors and/or additives are used
in the vehicle's cooling system, the vehicle could be
damaged. Use only the proper mixture of the engine
coolant listed in this manual for the cooling system.
See Recommended Fluids and Lubricants
on
page 7‑10for more information.
Checking Coolant
The vehicle must be on a level surface when checking
the coolant level.
Check to see if coolant is visible in the coolant surge
tank. If the coolant inside the coolant surge tank is
boiling, do not do anything else until it cools down.
If coolant is visible but the coolant level is not at or
above the FULL COLD mark, add a 50/50 mixture of
clean, drinkable water and DEX-COOL coolant at the
coolant recovery tank, but be sure the cooling system
is cool before this is done. See Engine Coolant
on
page 6‑34for more information.
6-35
Rear Axle
When to Check Lubricant
It is not necessary to regularly check rear axle fluid
unless you suspect there is a leak or you hear an
unusual noise. A fluid loss could indicate a problem.
Have it inspected and repaired.
How to Check Lubricant
To get an accurate reading, the vehicle should be on a
level surface. If the level is below the bottom of the filler plug hole,
you will need to add some lubricant. Add enough
lubricant to raise the level to the bottom of the filler
plug hole.
What to Use
To add lubricant when the level is low, use Dexron LS
Gear Oil 75W-90 (GM Part No. US. 88862624, in
Canada 88862625) meeting GM Specification 9986290.
To completely refill after draining, see
Recommended
Fluids and Lubricants
on page 7‑10. Then fill to the
bottom of the filler plug hole with the Synthetic Gear
Lubricant.
Headlamp Aiming
Headlamp aim has been preset at the factory and
should need no further adjustment.
However, if your vehicle is damaged in a crash, the
headlamp aim may be affected. Aim adjustment to the
low-beam headlamps may be necessary if oncoming
drivers flash their high-beam headlamps at you (for
vertical aim).
If the headlamps need to be re-aimed, it is
recommended that you take the vehicle to your dealer/
retailer for service.
6-55
Appearance Care
Interior Cleaning
The vehicle's interior will continue to look its best if
it is cleaned often. Although not always visible, dust
and dirt can accumulate on the upholstery. Dirt can
damage carpet, fabric, leather, and plastic surfaces.
Regular vacuuming is recommended to remove
particles from the upholstery. It is important to keep
the upholstery from becoming and remaining heavily
soiled. Soils should be removed as quickly as possible.
The vehicle's interior may experience extremes of heat
that could cause stains to set rapidly.
Lighter colored interiors may require more frequent
cleaning. Use care because newspapers and garments
that transfer color to home furnishings may also transfer
color to the vehicle's interior.
When cleaning the vehicle's interior, only use cleaners
specifically designed for the surfaces being cleaned.
Permanent damage may result from using cleaners
on surfaces for which they were not intended. Use
glass cleaner only on glass. Remove any accidental
over-spray from other surfaces immediately. To prevent
over-spray, apply cleaner directly to the cleaning cloth. Notice:
Using abrasive cleaners when cleaning
glass surfaces on the vehicle, could scratch the
glass and/or cause damage to the rear window
defogger. When cleaning the glass on the vehicle,
use only a soft cloth and glass cleaner.
Many cleaners contain solvents that may become
concentrated in the vehicle's breathing space.
Before using cleaners, read and adhere to all safety
instructions on the label. While cleaning the vehicle's
interior, maintain adequate ventilation by opening the
vehicle's doors and windows.
Dust may be removed from small buttons and knobs
using a small brush with soft bristles.
Products that remove odors from the vehicle's
upholstery and clean the vehicle's glass can be
obtained from your dealer/retailer.
6-90
To clean: 1. Saturate a lint-free, clean white cloth with water or club soda.
2. Wring the cloth to remove excess moisture.
3. Start on the outside edge of the soil and gently rub toward the center. Continue cleaning, using a clean
area of the cloth each time it becomes soiled.
4. Continue to gently rub the soiled area until the cleaning cloth remains clean.
5. If the soil is not completely removed, use a mild soap solution and repeat the cleaning process that
was used with plain water.
If any of the soil remains, a commercial fabric cleaner
or spot lifter may be necessary. When a commercial
upholstery cleaner or spot lifter is to be used, test a
small hidden area for colorfastness first. If the locally
cleaned area gives any impression that a ring formation
may result, clean the entire surface.
After the cleaning process has been completed, a paper
towel can be used to blot excess moisture from the
fabric or carpet.Coated Moldings
These moldings are around the hatch opening in the
rear area.
.When lightly soiled, wipe with a sponge or soft
lint-free cloth dampened with water.
.When heavily soiled, use warm soapy water.
Leather
A soft cloth dampened with water can be used to
remove dust. If a more thorough cleaning is necessary,
a soft cloth dampened with a mild soap solution can
be used. Allow the leather to dry naturally. Do not use
heat to dry. Never use steam to clean leather. Never
use spot lifters or spot removers on leather. Many
commercial leather cleaners and coatings that are
sold to preserve and protect leather may permanently
change the appearance and feel of the leather and are
not recommended. Do not use silicone or wax-based
products, or those containing organic solvents to clean
the vehicle's interior because they can alter the
appearance by increasing the gloss in a non-uniform
manner. Never use shoe polish on leather.
6-92
Finish Care
Occasional waxing or mild polishing of the vehicle by
hand may be necessary to remove residue from the
paint finish. Approved cleaning products can be
obtained from your dealer/retailer.
If the vehicle has a basecoat/clearcoat paint finish, the
clearcoat gives more depth and gloss to the colored
basecoat. Always use waxes and polishes that are
non-abrasive and made for a basecoat/clearcoat paint
finish.
Notice: Machine compounding or aggressive
polishing on a basecoat/clearcoat paint finish
may damage it. Use only non-abrasive waxes and
polishes that are made for a basecoat/clearcoat
paint finish on the vehicle.
Foreign materials such as calcium chloride and other
salts, ice melting agents, road oil and tar, tree sap,
bird droppings, chemicals from industrial chimneys,
etc., can damage the vehicle's finish if they remain
on painted surfaces. Wash the vehicle as soon as
possible. If necessary, use non-abrasive cleaners
that are marked safe for painted surfaces to remove
foreign matter.
Exterior painted surfaces are subject to aging, weather
and chemical fallout that can take their toll over a period
of years. To help keep the paint finish looking new, keep
the vehicle garaged or covered whenever possible.
Protecting Exterior Bright Metal Parts
Bright metal parts should be cleaned regularly to keep
their luster. Washing with water is all that is usually
needed. However, chrome polish may be used on
chrome or stainless steel trim, if necessary.
Use special care with aluminum trim. To avoid
damaging protective trim, never use auto or chrome
polish, steam or caustic soap to clean aluminum.
A coating of wax, rubbed to high polish, is
recommended for all bright metal parts.
ZR1 Carbon Fiber Panels
Carbon fiber panels can be washed and waxed like any
other panels.
Use a clear or black pigmented wax on the inner hood
carbon fiber panel.
ZR1 Hood Window
The hood window on the ZR1 can be cleaned in the
same manner as the headlamp lenses. See Cleaning
Exterior Lamps/Lenses
on page 6‑94for more
information.
6-95
Capacities and Specifications
The following approximate capacities are given in English and metric conversions.
See Recommended Fluids and Lubricants
on page 7‑10for more information.
Application Capacities
Metric English
Air Conditioning Refrigerant R134a For the air conditioning system refrigerant charge
amount, see the refrigerant caution label located
under the hood. See your dealer/retailer for more information.
Cooling System
6.2L LS3 V8 Engine 11.3 L11.9 qt
6.2L LS9 V8 Supercharged Engine –Cooling System 12.0 L12.7 qt
6.2L LS9 V8 Supercharged Engine –Supercharger
Intercooler Cooling System 4.9 L
5.2 qt
7.0L LS7 V8 Engine 11.3 L11.9 qt
Engine Oil with Filter 6.2L LS3 V8 5.7 L6.0 qt
6.2L LS3 V8 with Z52 Dry Sump Oil System 9.9 L10.5 qt
6.2L LS9 V8 Supercharged Engine 9.9 L10.5 qt
7.0L LS7 V8 Engine 9.9 L10.5 qt
Fuel Tank 68.0 L18.0 gal
6-108
.Tire wear inspection. SeeTire Inspection and
Rotation on page 6‑76.
.Fluids visual leak check (or every 12 months,
whichever occurs first). A leak in any system must
be repaired and the fluid level checked.
.Engine air cleaner filter inspection (vehicles
driven in dusty conditions only). See Engine Air
Cleaner/Filter on page 6‑27.
.Brake system inspection (or every 12 months,
whichever occurs first).
Maintenance II
.Perform all services described in Maintenance I.
.Steering and suspension inspection. Visual
inspection for damaged, loose, or missing parts
or signs of wear.
.Engine cooling system inspection. Visual
inspection of hoses, pipes, fittings, and clamps
and replacement, if needed.
.Windshield wiper blade inspection for wear,
cracking, or contamination and windshield and
wiper blade cleaning, if contaminated. See
Windshield and Wiper Blades
on page 6‑96.
Worn or damaged wiper blade replacement.
See Windshield Wiper Blade Replacement
on
page 6‑59.
.Body hinges and latches, key lock cylinders, any
folding seat hardware, and rear compartment,
hood, and console door hinges and latches
lubrication. See Recommended Fluids and
Lubricants
on page 7‑10. More frequent
lubrication may be required when vehicle is
exposed to a corrosive environment. Applying
silicone grease on weatherstrips with a clean cloth
makes them last longer, seal better, and not stick
or squeak.
.Restraint system component check. See Checking
the Restraint Systems on page 2‑60.
.Engine air cleaner filter inspection. See Engine Air
Cleaner/Filter on page 6‑27.
.Passenger compartment air filter replacement
(or every 12 months, whichever occurs first). More
frequent replacement may be required if vehicle is
driven regularly under dusty conditions.
Additional Required Services
At Each Fuel Stop
.Engine oil level check. See Engine Oilon
page 6‑19.
.Engine coolant level check. See Engine Coolanton page 6‑34.
.Windshield washer fluid level check. See
Windshield Washer Fluid on page 6‑42.
7-4