I'm having a bit of trouble fixing my Cadillac. The car hasn't been in first gear since I bought it, except for a few minutes over the last two days. A few weeks ago I checked the codes and there were a couple of traction control codes listed, one current and one historical. The historical code was TC0027, which is left front speed sensor continuity. The current code was TC0033, right rear speed sensor continuity. I cleared the codes and TC0033 stayed current, so I made plans to replace the rig