User manual GMC SIERRA 2003

[. . . ] The 2003 GMC Sierra Owner Manual Seats and Restraint Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8 Rear Seats Safety Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] When you start your engine and begin to drive away, your anti-lock brake system will check itself. You may hear a momentary motor or clicking noise while this test is going on. This is normal. 4-6 If there's a problem with the anti-lock brake system, this warning light will stay on. See Anti-Lock Brake System Warning Light on page 3-41. Along with ABS, your vehicle has a Dynamic Rear Proportioning (DRP) system. If there's a DRP problem, both the Brake and ABS warning lights will come on accompanied by a IO-second chime. The lights and chime will come on each time the ignition is turned on until the problem is repaired. See your dealer for service. Let's say the road is wet and you're driving safely. Suddenly, an animal jumps out in front of you. You slam on the brakes and continue braking. Here's what happens with ABS: A computer senses that wheels are slowing down. If one of the wheels is about to stop rolling, the computer will separately work the brakes at each front wheel and at both rear wheels. 4-7 The anti-lock system can change the brake pressure faster than any driver could. The computer is programmed to make the most of available tire and road conditions. This can help you steer around the obstacle while braking hard. 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. Using Anti-Lock Don't pump the brakes. Just hold the brake pedal down firmly and let anti-lock work for you. You may feel the brakes vibrate, or you may notice some noise, but this is normal. Braking in Emergencies With anti-lock, you can steer and brake at the same time. In many emergencies, steering can help you more than even the very best braking. As you brake, your computer keeps receiving updates on wheel speed and controls braking pressure accordingly. 4-8 Traction Assist System (TAS) Your vehicle may have a Traction Assist System (TAS) 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 rear wheels are spinning or beginning to lose traction. When this happens, the system reduces engine power to limit wheel spin. The traction control system is enabled every time your vehicle is started. [. . . ] When to Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31, 5-73 When to CheckandChange . . . . . . . . . . . . . . . . . . . . 5-25, 5-28 When to CheckandWhat to Use . . . . . . . . . . . . . . . . . . . . . 5-32 When to Check Lubricant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]