2004 Chevy Tahoe Stabiliti Trak service light

When you replace or remove the steering wheel position sensor you have to install a pin in the sensor before its removed from the steering shaft, if you dont By not installing a pin into the sensor it will cause the sensor to lose its centering position and must be discarded. And you cant apply alot of pressure on these sensors when installing them or they become no good. You might want to check to make sure the connector is plugged in if it is have it scanned for dtc's, who ever installed it might have broken it. Post back with any other questions.