Checking Brake Fluid; What To Add - GMC 2008 Chevrolet Tahoe Supplemental Owner's Manual

Checking Brake Fluid

The brake fluid can be checked without taking off the
cap by looking at the brake fluid reservoir.
With the engine not running for at least one minute, the
maximum fluid level (A) is at the top of the reservoir body.
With the engine running, the fluid level should be in the
proper operating range (B) between the MIN and MAX
marks. If it is not, have the brake hydraulic system
checked to see if there is a leak.
After work is done on the brake hydraulic system, make
sure the level, with the engine running, is in the proper
operating range (B) between the MIN and MAX marks.
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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" in the
owner manual.
Always clean the brake fluid reservoir cap and the area
around the cap before removing it. This helps keep dirt
from entering the reservoir.
CAUTION:
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With the wrong kind of fluid in the brake
hydraulic system, the brakes might not work
well. This could cause a crash. Always use the
proper brake fluid.