[HUMTECH]

Check for a wire splice into the data link connector under dash left side purple wire. Sounds like aftermarket remote start creating a problem on the data line. If there is a splice there attempt a remote sart then measure the voltage from that wire to ground. Key off should be 0. Key on it should toggle between 0 and 5 volts, wont see those numbers exactly but it should change up and down. If its solid 5v or higher your remote start module is creating a voltage spike on the data line.