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 BCM signal input is greater than 4.9 volts, or less than 0.4 volts for 1 second after turning the ignition switch to the CRANK Position
- The BCM is reading a valid but different code value than previously learned, or a tamper from the Passlock sensor.