Abstract: An example method includes determining identifying information for a vehicle to be serviced. The method further includes receiving at least one symptom identifier for the vehicle. The method further includes sending a request over a communication network to a remote server for a PID filter list for the vehicle, the request comprising the identifying information for the vehicle and the at least one symptom identifier for the vehicle. The method additionally includes receiving a response to the request over the communication network from the remote server, the response comprising the PID filter list for the vehicle. The method further includes determining, based on the PID filter list for the vehicle, a symptom-based subset of PIDs for the vehicle from a set of available PIDs. The method additionally includes displaying, on a display interface, the symptom-based subset of PIDs for the vehicle.

Abstract: An exhaust aftertreatment system is disclosed. The exhaust aftertreatment system includes a premixer conduit that defines an exhaust flow path, a baffle disposed in the exhaust flow path, and a reductant injector in fluid communication with the exhaust flow path. The baffle is positioned in the premixer conduit, which includes a premixer inlet, a transition section, and a premixer outlet. The transition section is disposed between the premixer inlet and the premixer outlet. The premixer inlet is in fluid communication with the engine. The reductant injector is positioned downstream of the baffle and upstream of the premixer outlet.

Abstract: A torsionally-biased, shock-absorbing fifth wheel hitch includes a first mounting mechanism removably and non-rotatably mounting a lower frame portion thereof to the bed of a towing vehicle; an upper frame portion; a second mounting mechanism with a pair of opposing resilient members pivotally mounting the upper frame portion about a horizontally-oriented transverse hitch axis relative to the lower frame portion, the second mounting mechanism having an inactivated configuration wherein the upper frame member is not pivotally biased about the transverse hitch axis relative to the lower frame member and an activated configuration wherein the upper frame member is pivotally biased about the transverse hitch axis relative to the lower frame member; and a fifth wheel hitch mechanism mounted to the upper frame portion.