Okay, 743 is for the torque converter solenoid circuit either being open or shorted. The pan would have to be dropped to inspect the harness and do voltage tests to the solenoids to be sure. The solenoid needs to be checked for about five ohms across the terminals.
The 755 is for the shift motor for the four wheel drive system.
Roy
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Tuesday, March 13th, 2018 AT 9:22 AM