2006 Cadillac DTS Owner's Manual - Page 359

Professional Vehicle The proper inflation of the tires on your professional vehicle depends on the type of tires on it. Tire Pressure Monitor System The Tire Pressure Monitor System (TPMS) is designed to monitor the amount of pressure in your vehicle's tires using radio and sensor technology. A TPMS sensor, mounted onto the vehicle's full-size tire and wheel assembly, transmits tire pressure readings to a receiver located in the vehicle. The compact spare tire and wheel does not have a TPMS sensor. Tire pressure status and tire pressure warnings are shown on the Driver Information Center (DIC) display. For additional information and details about the DIC operation and displays see DIC Controls and Displays on page 3-72 and DIC Warnings and Messages on page 3-76. If a low tire pressure condition is detected, the TPMS will display the CHECK TIRE PRESSURE warning message on the DIC and, at the same time, illuminate the low tire pressure warning symbol, on the instrument panel cluster. You may notice, during cooler weather conditions, that the low tire pressure warning symbol and the CHECK TIRE PRESSURE message will display when the vehicle is first started and then turn off as you start to drive the vehicle. This could be an early indicator that the tire pressures are getting low and need to be checked and inflated to the proper pressure. • If your vehicle has P235/60R17 size tires, the cold inflation pressure is 41 psi (284 kPa). • If your vehicle has LT235/60R17E size tires, the cold inflation pressure depends on the vehicle mass and should be determined by the vehicle coach-builder. A tire and loading information label provided by the final stage manufacturer should be attached to the B-pillar on the driver's side of the vehicle. If the final stage manufacturer's label is not present, the coach-builder should be consulted. Do not use the tire pressures indicated on the General Motors label. These tire pressures are for the incomplete vehicle and are not the correct tire pressures for the completed professional vehicle. Operation at inflation pressures below this recommendation may cause your tires to become overloaded. 5-59