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I have a 1996 Cadillac Fleetwood Brougham Eureka coach limo. With the LT1 I know you are able to access codes through the AC system. I don't need OBD codes, I need the codes that tells me the live data. I know #8 is the temperature of the water pump and # 24 is the Heat of the motor. I'm going on a long-distance trip and I want to keep my eye on the motor. I know 1-5 are Pcm, Ecm, etc..... I need live codes, temp, rpm....
Im moving and really dont want to break him. Ive about rebuilt it, but if i can see on the ac, id feel much better. Thanks!!!
 
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