2007 GMC Yukon Owner's Manual - Page 263

TIGHTEN GAS CAP If the vehicle's fuel cap is not tightened properly, this message may display along with the check engine light on the instrument panel cluster. See Malfunction Indicator Lamp on page 236. Reinstall the fuel cap fully. See Filling the Tank on page 432. The diagnostic system can determine if the fuel cap has been left off or improperly installed. A loose or missing fuel cap will allow fuel to evaporate into the atmosphere. A few driving trips with the cap properly installed should turn this light and message off. TRACTION CONTROL OFF If your vehicle has StabiliTrak®, this message will display when the traction control system is turned off. Adjust your driving accordingly. See StabiliTrak® System on page 348 for more information. TRANSMISSION HOT IDLE ENGINE Notice: If you drive your vehicle while the transmission fluid is overheating and the transmission temperature warning is displayed on the instrument panel cluster and/or DIC, you can damage the transmission. This could lead to costly repairs that would not be covered by your warranty. Do not drive your vehicle with overheated transmission fluid or while the transmission temperature warning is displayed. If the transmission fluid in the vehicle gets hot, this message will display along with a continuous chime. Driving with the transmission fluid temperature high can cause damage to the vehicle. Stop the vehicle and let it idle to allow the transmission to cool. This message will clear and the chime will stop when the fluid temperature reaches a safe level. 263 TIRE LEARNING ACTIVE If your vehicle has a Tire Pressure Monitor (TPM) system, this message will display when the system is re-learning the tire positions on your vehicle. See DIC Operation and Displays (With DIC Buttons) on page 244 or DIC Operation and Displays (Without DIC Buttons) on page 251 for more information. The tire positions must be re-learned after rotating the tires or after replacing a tire or sensor. See Tire Inspection and Rotation on page 497, Tire Pressure Monitor System on page 492, and Inflation - Tire Pressure on page 490 for more information.