Expert: autohelp - 6/17/2009

Question
QUESTION: yesterday after driving over railroad tracks my traction control light came on in my 2007 cadillac escalade, then my check engine light came on and was lacking in power in low gears.  this morning only the check engine light was on and not the traction control and it ran fine. have know idea why this would be happening all of a sudden.....help???  also no codes could be pulled from the computer

ANSWER: Have you had ANY work of any kind performed on the vehicle lately ?. Replaced tires, etc, etc, etc ?.

Is the check engine light on NOW ?.

Are there any messages in the message display center ?.

---------- FOLLOW-UP ----------

QUESTION: yes had the tires replaced and had a nail in my right rear making the tire pressure sensor go off

Answer
IS or HAS the CHECK ENGINE light on the dash ever illuminated on the vehicle while driving it ?.

Are there any unusual messages being displayed in the MESSAGE CENTER ?.


Unfortunately there are unscrupulous mechanics out there, I am NOT saying the one you had worked on the tires is one of these, But they are out there.

It IS highly possible that a wheel sensor may have got knocked loose and or disconnected which will cause this problem.