Conditions for Running 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 navigation radio must detect a power mode transition to ON.
The radio does not set this DTC if B1327 or B1328 is current.
The vehicle must drive for 4 km (2.5 mi) after receiving a GPS signal.