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Where is the OBD port on a Hummer?
OBD2 port location for 2 Hummer models. The port is usually under the dashboard on the driver's side.
- Hummer H2 (2003 - 2009)The OBD plug is located under the steering wheel on the left. The OBD2 socket is visible above the pedals.
- Hummer H3 (2005 - 2010)The OBD II socket is located above the pedals. The OBD connector is above the footrest. Here is the OBD port.
Found the port? Now scan it
Plug in an ELM327 adapter and read your Hummer's fault codes with the app.