engine light on need to know codes

2002 CADILLAC SEVILLE
98,500 MILES • V8 • FWD • AUTOMATIC
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DAVE OGE
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PCM P0481, RSS C0579, RSS C0584.
Aug 22, 2016 at 10:33 AM
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HMAC300
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the first one is cooling fan circuit, so check relays under hood fuse box and then it has to be checked for broken wiring /or a short. the second two are for the electronic suspension which a mechanic will need to hook his scanner up to do some commands to test to see what is wrong with that particular circuit.
Aug 22, 2016 at 12:07 PM
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