1995 Pontiac Firebird Owner's Manual - Page 67

Driving Through Deep Standing Water *, Performance Mode Switch This switch lets you change from a normal driving mode to a performance mode. When you start the engine, the switch willbe in normal mode. For general driving conditions, use the normal mode. It will remain in normal unless you select thePERFORM feature. For a firmer shiftand increased performance, you may choose the PERFORM mode. The light in the center of the switch will light up when selected. The switch will then remain in performance mode until the engine is shut off, when it will go back normal mode. to NOTICE: If you drive too quickly through deep puddles or standing water, water can come through your in engine's air intake and badly damage your engine. Never drive through water that is slightly lower than the underbody your vehicle.If you of can't avoid deep puddles or standing drive waiter, through them very slowly.