Chevrolet TrailBlazer, Service Manual

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PRECAUTIONS
Before servicing any vehicle, please be sure to read all of the following precautions, which deal with
personal safety, prevention of component damage, and important points to take into consideration
when servicing a motor vehicle:
Never open, service or drain the radiator or cooling system when the engine is hot; serious
burns can occur from the steam and hot coolant.
Observe all applicable safety precautions when working around fuel. Whenever servicing
the fuel system, always work in a well-ventilated area. Do not allow fuel spray or vapors to
come in contact with a spark, open flame, or excessive heat (a hot drop light, for example).
Keep a dry chemical fire extinguisher near the work area. Always keep fuel in a container
specifically designed for fuel storage; also, always properly seal fuel containers to avoid the
possibility of fire or explosion. Refer to the additional fuel system precautions later in this
section.
Fuel injection systems often remain pressurized, even after the engine has been
turned
OFF . The fuel system pressure must be relieved before disconnecting any fuel lines.
Failure to do so may result in fire and/or personal injury.
Brake fluid often contains polyglycol ethers and polyglycols. Avoid contact with the eyes
and wash your hands thoroughly after handling brake fluid. If you do get brake fluid in your
eyes, flush your eyes with clean, running water for 15 minutes. If eye irritation persists, or if
you have taken brake fluid internally, IMMEDIATELY seek medical assistance.
The EPA warns that prolonged contact with used engine oil may cause a number of skin
disorders, including cancer. You should make every effort to minimize your exposure to
used engine oil. Protective gloves should be worn when changing oil. Wash your hands and
any other exposed skin areas as soon as possible after exposure to used engine oil. Soap
and water, or waterless hand cleaner should be used.
All new vehicles are now equipped with an air bag system, often referred to as a
Supplemental Restraint System (SRS) or Supplemental Inflatable Restraint (SIR) system.
The system must be disabled before performing service on or around system components,
steering column, instrument panel components, wiring and sensors. Failure to follow safety
and disabling procedures could result in accidental air bag deployment, possible personal
injury and unnecessary system repairs.
Always wear safety goggles when working with, or around, the air bag system. When
carrying a non-deployed air bag, be sure the bag and trim cover are pointed away from your
body. When placing a non-deployed air bag on a work surface, always face the bag and
trim cover upward, away from the surface. This will reduce the motion of the module if it is
accidentally deployed. Refer to the additional air bag system precautions later in this
section.
Clean, high quality brake fluid from a sealed container is essential to the safe and proper
operation of the brake system. You should always buy the correct type of brake fluid for
your vehicle. If the brake fluid becomes contaminated, completely flush the system with
new fluid. Never reuse any brake fluid. Any brake fluid that is removed from the system
should be discarded. Also, do not allow any brake fluid to come in contact with a painted
surface; it will damage the paint.
Never operate the engine without the proper amount and type of engine oil; doing so WILL
result in severe engine damage.