2008 GMC Envoy Owner's Manual - Page 191

SERVICE TIRE MONITOR This message displays if a part on the Tire Pressure Monitor System (TPMS) is not working properly. The tire pressure light also flashes and then remains on during the same ignition cycle. See Tire Pressure Light on page 3-41. Several conditions may cause this message to appear. See Tire Pressure Monitor Operation on page 5-69 for more information. If the warning comes on and stays on, there may be a problem with the TPMS. See your dealer/retailer. STABILITRAK OFF This message displays 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. 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 4-33. To turn the StabiliTrak® system back on, press the StabiliTrak® button again. There are several conditions that can cause this message to appear. STABILITRAK ACTIVE This message displays anytime the StabiliTrak® system activates to maintain vehicle stability. Any combination of engine speed management, brake traction control, and stability control displays this message. STABILITRAK NOT READY This message may display if driving conditions delay StabiliTrak® system initialization. This is normal. Once the system initializes, this message will no longer be displayed on the DIC. • The message may display if the brake system warning light is on. See Brake System Warning Light on page 3-38. • The message displays if the vehicle is shifted into 4LO. The message turns off as soon as the conditions that caused the message to be displayed are no longer present. 3-57