2010 GMC Sierra 1500 Crew Cab Owner's Manual - Page 383

The traction control disable button is located on the instrument panel below the climate controls. brake-traction control when traction control is off, but will not be able to use the engine speed management system. See "Traction Control Operation" next for more information. When the traction control system has been turned off, system noises may still be heard as a result of the brake-traction control coming on. It is recommended to leave the system on for normal driving conditions, but it may be necessary to turn the system off if the vehicle is stuck in sand, mud, ice or snow, and you want to "rock" the vehicle to attempt to free it. It may also be necessary to turn off the system when driving in extreme off-road conditions where high wheel spin is required. See If Your Vehicle is Stuck in Sand, Mud, Ice, or Snow on page 5‑31. When the transfer case is in 4LO, the stability system is automatically disabled, the StabiliTrak light comes on and the STABILITRAK OFF message will appear on the DIC. Both traction control and StabiliTrak are automatically disabled in this condition. The traction control part of StabiliTrak can be turned off by pressing and releasing the StabiliTrak button if both systems (traction control and StabiliTrak) were previously on. To disable both TCS and StabiliTrak, press and hold the button for five seconds. TCS and StabiliTrak can be turned on by pressing and releasing the StabiliTrak button if not automatically shut off for any other reason. When TCS or StabiliTrak is turned off, the StabiliTrak light and the appropriate message will be displayed on the DIC to warn the driver. The vehicle will still have 5-7