Checking Brake Fluid; What To Add - GMC 2003 Yukon Owner's Manual

Checking Brake Fluid

You can check the brake fluid without taking off the cap.
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.
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 6-17 .
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