4th gen HD (DJ 2500 / D2 3500), 2010-2018
Key reference: 56046639AA
Select variant
Select variant
Diagnostic port location (OBD)
Illustrative — for orientation only.
Under the driver's side of the dash, just left of the steering column above the driver's left knee: a couple of inches left of and slightly behind the hood-release handle, a few inches right of the parking-brake release. The black 16-pin connector is recessed and faces down, so the plug goes in upwards; it is hard to see without a torch. Same position on every 2010-2018 2500/3500 cab and trim (US trucks are LHD only). On 2018 trucks the CAN star connector used for the gateway bypass sits just above this port.
Loading remaining details…
