2008 Pontiac Grand Prix Owner's Manual - Page 343

At the same time a message to check the pressure in a specific tire appears on the Driver Information center (DIC) display. The low tire pressure warning light and the DIC warning message come on at each ignition cycle until the tires are inflated to the correct inflation pressure. Using the DIC buttons, tire pressure readings can be viewed by the driver. For additional information and details about the DIC operation and displays see DIC Operation and Displays (Uplevel DIC with Trip Computer) on page 3-55 or DIC Operation and Displays (Base Level DIC) on page 3-62 and DIC Warnings and Messages on page 3-67. The low tire pressure warning light may come on in cool weather when the vehicle is first started, and then turn off as you start to drive. This could be an early indicator that the air pressure in the tire(s) are getting low and need to be inflated to the proper pressure. A tire and Loading Information label, attached to your vehicle, shows the size of your vehicle's original equipment tires and the correct inflation pressure for your vehicle's tires when they are cold. See Loading Your Vehicle on page 4-22, for an example of the Tire and Loading Information label and its location on your vehicle. Also see Inflation - Tire Pressure on page 5-69. Your vehicle's TPMS system can warn you about a low tire pressure condition but it does not replace normal tire maintenance. See Tire Inspection and Rotation on page 5-75 and Tires on page 5-62. Your vehicle, when new, may have included a factory-installed Tire Inflator Kit. This kit uses a GM approved liquid tire sealant. See Tire Sealant and Compressor Kit (GXP) on page 5-86. Notice: Using non-approved tire sealants could damage the Tire Pressure Monitor System (TPMS) sensors. TPMS sensor damage caused by using an incorrect tire sealant is not covered by the vehicle warranty. Always use the GM approved tire sealant available through your dealer/retailer. 5-73