GMC 2007 Envoy - Manual (Page 420)

Checking Brake Fluid
You can check the brake fluid without taking off
the cap.
Look at the brake fluid
reservoir. The fluid level
should be above
MIN. If it is not, have
your brake system
checked to see if there
is a leak.
After work is done on the brake hydraulic system,
make sure the level is above the MIN, but not over
the MAX mark.
What to Add
When you do need brake fluid, use only DOT-3
brake fluid. Use new brake fluid from a sealed
container only. See Recommended Fluids and
Lubricants on page 517.
Always clean the brake fluid reservoir cap and the
area around the cap before removing it. This will
help keep dirt from entering the reservoir.
{ CAUTION:
With the wrong kind of fluid in the brake
system, the brakes may not work well, or
they may not even work at all. This could
cause a crash. Always use the proper
brake fluid.
Notice:
• Using the wrong fluid can badly damage
brake system parts. For example, just a few
drops of mineral-based oil, such as engine
oil, in the brake system can damage brake
system parts so badly that they will have to
be replaced. Do not let someone put in the
wrong kind of fluid.
• If you spill brake fluid on your vehicle’s
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake fluid
on your vehicle. If you do, wash it off
immediately. See Washing Your Vehicle
on page 486.
420