Conditions for Setting the DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The heated seat sensor signal circuit voltage to the seat module is greater than 4.94 volts for 30 seconds or more.
The heated seat sensor signal circuit voltage to the seat module is less than 0.07 volts for 30 seconds or more.
The heated seat sensor signal circuit input to the seat module indicates that the desired seat temperature has not been reached within 34 minutes after activation.