GMC Chevrolet SSR 2003 Owner's Manual page 270

Checking Brake Fluid
You can check the brake fluid without taking off the cap.
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 Part D: Recommended Fluids and Lubricants
on page 6-15.
5-34
Just 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.
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:
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With the wrong kind of fluid in your brake
system, your 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 your
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 Appearance
Care on page 5-72.