Hummingbird Ranch
Member
Anyone been able to get a Scan Gauge 3 to work on a 2023 HDUV with 2.7L? I found the OBD port under the hood, used the Diesel Freak OBDII adapter and connected to Scan Gauge 3. Gauge powers up, but cannot seam to figure out how to communicate. Acts like it does not know what protocol to use, and is set to auto, so it should be trying them all.
