2007 CHEVROLET OPTRA 5 brakes

Replacing Brake System Parts
The braking system on a vehicle is complex.
Its many parts have to be of top quality and work
well together if the vehicle is to have really
good braking. Your vehicle was designed and
tested with top-quality GM brake parts. When you
replace parts of the braking system — for
example, when the brake linings wear down and
you need new ones put in — be sure you get new
approved GM replacement parts. If you do not,
the brakes might not work properly. For example,
if someone puts in brake linings that are wrong
for your vehicle, the balance between the front
and rear brakes can change — for the worse.
The braking performance you have come to expect
can change in many other ways if someone
puts in the wrong replacement brake parts.
Battery
Your vehicle has a maintenance free battery.
When it is time for a new battery, get one that has
the replacement number shown on the original
battery’s label. SeeEngine Compartment Overview
on page 258for battery location.Warning:Battery posts, terminals, and related
accessories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harm.
Wash hands after handling.
Vehicle Storage
If you are not going to drive your vehicle for
25 days or more, remove the black, negative (−)
cable from the battery. This will help keep
your battery from running down.
{CAUTION:
Batteries have acid that can burn you and
gas that can explode. You can be badly
hurt if you are not careful. SeeJump
Starting on page 285for tips on working
around a battery without getting hurt.
284

(C) Aspect Ratio:A two-digit number that
indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is 70,
as shown in item C of the illustration, it would
mean that the tire’s sidewall is 70% as high as it
is wide.
(D) Construction Code:A letter code is used
to indicate the type of ply construction in the tire.
The letter R means radial ply construction; the
letter D means diagonal or bias ply construction;
and the letter B means belted-bias ply
construction.
(E) Rim Diameter:Diameter of the wheel in
inches.
(F) Service Description:These characters
represent the load range and the speed rating
of a tire. The load range represents the load carry
capacity a tire is certified to carry. The speed
rating is the maximum speed a tire is certified to
carry a load. Speed ratings range from A to Z.Tire Terminology and Denitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the
tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight:This means the combined
weight of optional accessories. Some examples
of optional accessories are, automatic
transmission/transaxle, power steering, power
brakes, power windows, power seats, and
air conditioning.
Aspect Ratio:The relationship of a tire’s height
to its width.
Belt:A rubber coated layer of cords that is located
between the plies and the tread. Cords may be
made from steel or other reinforcing materials.
Bead:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
307

Different Size Tires and Wheels
If you add wheels or tires that are a different size
than your original equipment wheels and tires,
this may affect the way your vehicle performs,
including its braking, ride and handling
characteristics, stability, and resistance to rollover.
Additionally, if your vehicle has electronic
systems such as, anti-lock brakes, traction control,
and electronic stability control, the performance
of these systems can be affected.{CAUTION:
If you add different sized wheels, your
vehicle may not provide an acceptable
level of performance and safety if tires
not recommended for those wheels are
selected. You may increase the chance
that you will crash and suffer serious
injury. Only use GM specic wheel and
tire systems developed for your vehicle,
and have them properly installed by a
GM certied technician.
SeeBuying New Tires on page 318and
Accessories and Modifications on page 249for
additional information.
319

Short Trip/City Scheduled
Maintenance
The services shown in this schedule up to
100,000 miles (166 000 km) should be repeated
after 100,000 miles (166 000 km) at the same
intervals for the life of this vehicle. The services
shown at 150,000 miles (240 000 km) should be
repeated at the same interval after 150,000 miles
(240 000 km) for the life of this vehicle.
SeePart B: Owner Checks and Services on
page 374andPart C: Periodic Maintenance
Inspections on page 380.
Footnotes
†The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that
the failure to perform this maintenance item will not
nullify the emission warranty or limit recall liability
prior to the completion of the vehicle’s useful life.
We, however, urge that all recommended
maintenance services be performed at the indicated
intervals and the maintenance be recorded.
+A good time to check your brakes is during
tire rotation. See Brake System Inspection
on page 381.
3,000 Miles (5 000 km)
❑Change engine oil and filter and replace engine
oil pan drain plug washer (or every 3 months,
whichever occurs first).An Emission Control
Service.
6,000 Miles (10 000 km)
❑Change engine oil and filter and replace engine
oil pan drain plug washer (or every 3 months,
whichever occurs first).An Emission Control
Service.
❑Rotate tires. SeeTire Inspection and Rotation
on page 316for proper rotation pattern and
additional information.(See footnote +.)
9,000 Miles (15 000 km)
❑Change engine oil and filter and replace engine
oil pan drain plug washer (or every 3 months,
whichever occurs first).An Emission Control
Service.
361

Long Trip/Highway Scheduled
Maintenance
The services shown in this schedule up to
100,000 miles (166 000 km) should be repeated
after 100,000 miles (166 000 km) at the same
intervals for the life of this vehicle. The services
shown at 150,000 miles (240 000 km) should be
repeated at the same interval after 150,000 miles
(240 000 km) for the life of this vehicle.
SeePart B: Owner Checks and Services on
page 374andPart C: Periodic Maintenance
Inspections on page 380.
Footnotes
†The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that
the failure to perform this maintenance item will not
nullify the emission warranty or limit recall liability
prior to the completion of the vehicle’s useful life.
We, however, urge that all recommended
maintenance services be performed at the indicated
intervals and the maintenance be recorded.
+A good time to check your brakes is during tire
rotation. See Brake System Inspection on
page 381.
7,500 Miles (12 500 km)
❑Change engine oil and filter and replace engine
oil pan drain plug washer (or every 12 months,
whichever occurs first).An Emission Control
Service.
❑Rotate tires. SeeTire Inspection and Rotation
on page 316for proper rotation pattern and
additional information.(See footnote +.)
15,000 Miles (25 000 km)
❑Change engine oil and filter and replace engine
oil pan drain plug washer (or every 12 months,
whichever occurs first).An Emission Control
Service.
❑Replace passenger compartment air filter.
If you drive regularly under dusty conditions, the
filter may require replacement more often.
❑Inspect engine air cleaner filter. SeeEngine Air
Cleaner/Filter on page 264for more information.
❑Rotate tires. SeeTire Inspection and Rotation
on page 316for proper rotation pattern and
additional information.(See footnote +.)
❑Inspect drive belt(s).
369

Engine Cooling System Inspection
Inspect the hoses and have them replaced if
they are cracked, swollen or deteriorated. Inspect
all pipes, fittings and clamps; replace as needed.
Clean the outside of the radiator and air
conditioning condenser. To help ensure proper
operation, a pressure test of the cooling system
and pressure cap is recommended at least once
a year.
Throttle System Inspection
Inspect the throttle system for interference or
binding, and for damaged or missing parts.
Replace parts as needed. Replace any
components that have high effort or excessive
wear. Do not lubricate accelerator and cruise
control cables.
Brake System Inspection
Inspect the complete system. Inspect brake lines
and hoses for proper hook-up, binding, leaks,
cracks, chafing, etc. Inspect disc brake pads for
wear and rotors for surface condition. Inspect other
brake parts, including calipers, parking brake,
etc. You may need to have your brakes inspected
more often if your driving habits or conditions
result in frequent braking.
381

Reporting Safety Defects to
General Motors
In addition to notifying NHTSA (or Transport
Canada) in a situation like this, we certainly
hope you will notify General Motors. Please call
the Chevrolet Customer Assistance Center at
1-800-222-1020, or write:
Chevrolet Motor Division
Chevrolet Customer Assistance Center
P.O. Box 33170
Detroit, MI 48232-5170
In Canada, please call us at 1-800-263-3777
(English) or 1-800-263-7854 (French). Or, write:
General Motors of Canada Limited
Customer Communication Centre, CA1-163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
Service Publications Ordering
Information
Service Manuals
Service Manuals have the diagnosis and repair
information on engines, transmission, axle
suspension, brakes, electrical, steering, body, etc.
Transmission, Transaxle, Transfer
Case Unit Repair Manual
This manual provides information on unit
repair service procedures, adjustments, and
specifications for GM transmissions, transaxles,
and transfer cases.
Service Bulletins
Service Bulletins give technical service information
needed to knowledgeably service General
Motors cars and trucks. Each bulletin contains
instructions to assist in the diagnosis and service
of your vehicle.
406

Audio System(s) (cont.)
Radio with CD......................................... 180
Radio with Six-Disc CD............................ 186
Understanding Radio Reception............... 203
Automatic Transaxle
Fluid........................................................ 266
Operation................................................. 110
B
Battery........................................................ 284
Inadvertent Power Saver.......................... 152
Before Leaving on a Long Trip.................... 227
Brake
Anti-Lock Brake System (ABS)................. 211
Emergencies............................................ 213
Parking.................................................... 116
System Inspection.................................... 381
System Warning Light.............................. 168
Brakes........................................................ 281
Braking....................................................... 210
Braking in Emergencies............................... 213
Break-In, New Vehicle................................. 105
Bulb Replacement....................................... 290
Center High-Mounted
Stoplamp (CHMSL)......................296, 297
Front Turn Signal and Parking Lamps......... 292Bulb Replacement (cont.)
Halogen Bulbs......................................... 290
Headlamp Aiming..................................... 290
Headlamps............................................... 290
License Plate Lamps................................ 301
Replacement Bulbs.................................. 301
Sidemarker Lamps..........................294, 295
Taillamps, Stoplamps and
Back-Up Lamps..................................... 300
Taillamps, Turn Signal, and Stoplamps....... 298
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps..................................... 299
Turn Signal Lamps................................... 293
Buying New Tires........................................ 318
C
California Fuel............................................. 252
California Proposition 65 Warning................ 249
Canadian Owners........................................... 3
Capacities and Specifications...................... 352
Carbon Monoxide............... 99,121, 231, 243
Care of
Safety Belts............................................. 339
Your CD Player........................................ 204
Your CDs ................................................. 203
Cargo Shade............................................... 130
410