Question about 2002 Cadillac Deville

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2002 cadillac deville lights came on, traction, battery, security

I have a 2002 cadillac deville with 80,000 miles and i installed a sound system in it, the sound is great the car runs great but i got alot of light messeges turning on like the battery alternator service engine light and it doesnt read the fuel and temp. it shows the speed thats bout it. i have check all the fuses and they are all good not one single burnt one. i checked the fuses under the rear seat and under the hood. please help so i can fix this problem. id appreciate a whole lot! thanks.

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Hello!

This could be 2 thing that may have caused this one is that the ECU detected a "change" in the system brought by installing the radio and the other wiring issues.

For the error detected by the ECU, have the negative terminal of your batter disconnected for a little over the minute to reset it. Once you put it back on whatever you have installed it will detect it and it should go back to normal.

For the second one, during the installation of the radio other wires may have been affected such as the ground of the components on your dashboard, hence all they are not acting correctly. The speedometer however is reliant on mechanical components specifically the speedometer cable to measure the speed which electrical issues will unlikely going to affect it.

Thank you

Posted on Jun 22, 2009

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