1996 Chevrolet Tahoe Owner's Manual - Page 284

Brakes Brake Fluid Your brake master cylinder reservoir is here. It is filled with DOT-3 brake fluid. So, it isn't a good idea to"top off' your brake fluid. Adding brake fluid won't correct a leak. If you add fluid when your linings are worn, then you'll have too much fluid when you get new brake linings. You should add (or remove) brake fluid, as necessary, only when work is done onthe brake hydraulic system. - If you have too much brake fluid, can spill it will on the engine. The fluid burn if the engine is hot enough. You or others could be burned, and your vehicle could be damaged. Add brake on fluid only when work is done the brake hydraulic system. There are only two reasons why the brake fluid level in the reservoir might go down.The first is that the brake fluid Refer to the Maintenance Schedule to determine when to goes down to an acceptable level during normal brake check your brake fluid. See "Periodic Maintenance lining wear. When new linings are put in, the fluid level Inspections" in the Index. goes back up. The other reason is that fluid is leaking out of the brake system. If it is, you should have your brake system fixed, since a leak means that sooner later your or brakes won't work well,or won't work at all. 6-31