OK, I think you guys are right in the stop lamp switch circuit p106 code. (I'm trying to get the correct manual for this car, I have book 2).
Now if driven steadily in 1300-1600 rpm range, the traction control disabled message comes on and code T067 (I think), sets,(a tcs code).
There is a horrible vibration at this rpm range. As I said before, this only occurs at 1300-1600 rpm. I have not inspected the under carriage yet, as I just bought it a week ago. This problem did not occur on the test drive of course. I used to work at a Cad dealer (ABS and handling), and never saw this problem before. I have seen bad inner axle joints cause severe vibration, but this seems different. Any help appreciated.
Steven Martinez said:
Logan is right, Your DTC is a stop lamp input circuit problem. The P106 that you found online that said it was a MAP sensor circuit problem is for OBDII compliant cars, (1996 and Newer) Some cars built before 1996 were OBDII compliant but I am not sure what models, but according to my resources Cadillac was not until 1996. So your '94 is more than likely OBD1. OBD1 and OBD2 use many of the same trouble codes but do not have the same meaning. For example your P106 code diagnoses 2 totally different faults depending on what year model the code was retrieved from. Hope this helps...