Stephen6096 Posted July 5, 2015 Report Share Posted July 5, 2015 I have a 1996 Cadillac deville with the trouble code TC0027 as stated in the title. This code is for the Left front wheel speed sensor and describes that it has a continuity issue. Well, here is what I have done so far in attempts to fix this and maybe some of you more knowledgeable people can enlighten me on what I need to do and what I may have done wrong. First, I replaced both the front wheel hubs with new since they were getting worn and had almost 150k miles on them. This obviously did not fix the problem. I then proceeded to clean all the fuse connections in the car and the connectors that had to do with he left front wheel speed sensor, even the EBTCM modules main connector. I did an ohm test on the new and old bearing which showed about 1200-1300 ohms on new and old. I checked for continuity from the wheel speed connector down to the hub connector and there is good continuity there. Next I plan on checking from the hub to the EBTCM connector. I also read somewhere about if the EBTCM is bad then no matter what it throws the TC0027 code and none of the others. This led me to thinking if I unplug both the front hub wheel speed connectors then it should throw a code for the right front also. Correct? Well, it did not and only showed a code for the left front. This leads me to believe that the EBTCM may be bad but I am not 100% sure and dont feel like wasting money for fun. When replacing the hub, I could get both the ABS and Traction control light to go off with the wheel off but as soon as I put the wheel back on, or lowered the car to the ground then the lights would come back on. The lights are always on no matter if I am driving on a bumpy or smooth road, wiggling wires around, or doing whatever. I made sure the wires were twisted right on all parts of the car but the hub connector itself so that should all be fine. I will check the hub to see if they are twisted later on just in case. Brakes work fine other than no pulsating feeling front he ABS pump and the car starts in second gear due to the traction control light. Other than that the car is functioning normally. This is all I can remember for now of what I have done maybe more will come to me later. Any help will be appreciated. This is a daily driver and I would like to get this fixed in a day or 2 to get it back on the road again. Any information you might need, I will try and get for you. Although it is storming where I live right now so it might be a delay on getting the info for you depending on what it is. Thanks, Stephen Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.