2006 GMC Envoy Owner's Manual - Page 202

STABILITRAK ACTIVE The STABILITRAK ACTIVE message will be displayed anytime the system activates to maintain vehicle stability. Any combination of engine speed management, brake traction control, and stability control will display the STABILITRAK ACTIVE message on the DIC. STABILITRAK NOT READY The STABILITRAK NOT READY message may be displayed if driving conditions delay system initialization. This is normal. Once the system initializes, the STABILITRAK NOT READY message will no longer be displayed on the DIC. To limit wheel spin and realize the full benefits of the stability enhancement system, you should normally leave StabiliTrak® on. However, you should turn StabiliTrak® off if your vehicle gets stuck in sand, mud, ice, or snow and you want to rock your vehicle to attempt to free it, or if you are driving in extreme off-road conditions and require more wheel spin. See If Your Vehicle is Stuck in Sand, Mud, Ice, or Snow on page 4-44. To turn the StabiliTrak® system back on, press the StabiliTrak® button again. There are several conditions that can cause this message to appear. • The message may be displayed if the brake system warning light is on. See Brake System Warning Light on page 3-39. STABILITRAK OFF The STABILITRAK OFF message will be displayed when you press the StabiliTrak® button for more than five seconds or when stability control has been automatically disabled. The StabiliTrak® button is located on the transmission shift handle. • The message will be displayed if the vehicle is shifted into 4LO. The message will turn off as soon as the conditions that caused the message to be displayed are no longer present. 3-58