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I would try doing a factory reset on the UG and/or choosing "Force J1850-VPM" protocol on the UG setup. From an UG manual:
"The Scanning process can interfere with proprietary implementations of the OBD II connector/interface. For example, on some vehicles the traction control light becomes lit, or the speedometer or other gauges may stop functioning, the transmission may shift hard or not at all, or the check engine light may become lit. To avoid these issues, the Protocol can be fixed to that used by the vehicle. "
Good luck.
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