1997 Pontiac Grand Prix Owner's Manual - Page 203

Remember: Anti-lock doesn't change the time you need to get your foot up to the brake pedal or always decrease stopping distance. If you get too close to the vehicle in front of you, you won't have time to apply your brakes if that vehicle suddenly slows or stops. Always leave enough room up ahead to stop, even though you have anti-lock brakes. Trac System (Option: Not Available with 3800 Supercharged Engine) Your vehicle may have Trac System that limits wheel spin. This is especially useful in slippery road conditions. The system operates only if it senses that one or both of the front wheels are spinning or beginning to lose traction. When this happens, the system reduces engine power and may also upshift the transaxle to limit wheel spin. This light will come on when your Trac System is limiting wheel spin. See "Trac System Active Light" in the Index. You may feel or hear the system working, but this is normal. Using Anti-Lock Don't pump the brakes. Just hold the brake pedal down and let anti-lock work for you. You may feel the system working, or you may notice some noise, but this is normal. When your anti-lock system is adjusting brake pressure to help avoid a braking skid, this light will come on. See "Anti-Lock Brake System Active Light" in the Index. LOW TRAC LOW TRAC The Trac System operates in all transaxle shift lever positions. But the system can upshift the tran.saxle only as high as the shift lever position you've chosen, so you should use the lower gears only when necessary. See "Automatic Transaxle" in theIndex. 4-9