2002 Pontiac Firebird Owner's Manual - Page 272

Hydraulic Clutch The hydraulic clutch linkage in your vehicle is self-adjusting. The clutch master cylinder reservoir is filled with hydraulic clutch fluid. It is not necessary to regularly check clutch fluid unless you suspect there is a leak in the system. Adding fluid won't correct a leak. A fluid loss in this system could indicate a problem. Have the system inspected and repaired. The clutch master cylinder reservoir is located at the rear of the engine compartment on the driver's side of the vehicle. See "Engine Compartment Overview" in the Index for more information on location. Refer to the Maintenance Schedule to determine how often you should check the fluid level in your clutch master cylinder reservoir and for the proper fluid. See "Owner Checks and Services" and "Recommended Fluids and Lubricants" in the Index. When to Check and What to Use How to Check and Add Fluid The proper fluid should be added if the level is below the plastic step on the reservoir. See the instructions on the reservoir cap. 6-26