What does Service Tire Monitor mean on my 2004 Tahoe?
What does Service Tire Monitor mean on my 2004 Tahoe? 07-22-2004, 09:55 AM. The Tahoe is set up with a tire pressure warning device. The sensors for this system are part of the valve assembly on the wheel. If the new wheels do not have the sensors in the valves, the system will keep going off because it is not getting a signal from the wheels. Can you get 4 wheel drive on a Chevy Tahoe? Cannot engage 4 wheel drive. Service 4 wheel drive light is on. Occassionally can get it to go in, but then can't get it...