2004 GMC Yukon Owner's Manual - Page 311

The engine speed management will be disabled. In this state, engine power is not reduced automatically and the driven wheels can spin more freely. This can cause the brake-traction control to activate constantly. For more information on the traction active message, see Driver Information Center (DIC) on page 3-56. Notice: If the traction off light comes on due to heavy braking and/or because the traction control system has been continuously active, do not allow the wheel(s) of one axle to spin excessively. If you do, you may be causing damage to the transfer case. This could lead to costly repairs not covered by your warranty. If the brake traction-control system activates constantly or if the brakes have heated up due to high speed braking, brake traction-control will be disabled and the TRACTION SYS LIMITED message will be displayed. In the limited mode, the traction-control system will only use engine traction-control and is limited in it's ability to provide optimal performance since the system will not utilize brake traction-control to control slip on the drive wheels. The system will return to normal operation after the brakes have cooled. This can take up to two minutes or longer depending on brake usage. Notice: If you allow the wheel(s) of one axle to spin excessively while the traction off, ABS and brake warning lights and the SERVICE STABILITY MESSAGE are displayed, you could damage the transfer case. The repairs would not be covered by your warranty. Reduce engine power and do not spin the wheel(s) excessively while these lights and this message are displayed. The traction control system may activate on dry or rough roads or under conditions such as heavy acceleration while turning or abrupt upshifts/downshifts of the transmission. When this happens you may notice a reduction in acceleration, or may hear a noise or vibration. This is normal. If your vehicle is in cruise control when the system activates, the STABILITY SYS ACTIVE message will appear on the Driver Information Center (DIC), and the cruise control will automatically disengage. When road conditions allow you to use cruise again, you may re-engage the cruise control. See "Cruise Control" under Turn Signal/Multifunction Lever on page 3-8. Stabilitrak® may also turn off automatically if it determines that a problem exists with the system. If the problem does not clear itself after restarting the vehicle, you should see your dealer for service. 4-13