QuestionQUESTION: what causes TC light to be on also does it have anything to do with transmission not shifting right.
ANSWER: TC = Traction Control.
Yes, it can cause transmission shiift problems.
You need to retrieve the CODES from the computers first.
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QUESTION: do cadillic cateras thento run hot may tempeture control gauge always read on line pass haft way line. heter control valve was replaced 8-23-07.
AnswerWHY would you replace the heater control valve if applicable.
You can try and replace the thermostat and see if the engine runs cooler. Make ABSOLUTELY SURE that yu instlall the CORRECT thermostat recommended by the manufacturer.
When the heat gage gets just above the line, If the cooling fans come on and the gage drops to the half way line or below, Your fine.
