Computer problem
1989 Cadillac Deville V8 Front Wheel Drive 80000 miles
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hi,i recently asked a question re my 89 deville about serv eng soon light being on and losing display on heater-ac and fan stuck on high speed.also lost display on fuel center.thanks to melvin2021 for prompt reply.i had someone extract codes i have code 47...u a r t error.this person tells me i likely have a ground issue.he says he has to do a step by step search..sounds expensive to me.this car was given to me by a relative,and i dont have a jillion dollars to spend on it.i would appreciate your thoughts on this thanks