REAR ACCESS OPEN Message
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 REAR ACCESS OPEN message will be displayed on the driver information center (DIC) whenever the liftgate or liftglass is open while the ignition is in the RUN position.