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Re: 2000 Cadillac Deville DTS
Posted to HVAC Forum on 5/8/2006

Does the Genysis communicate with the PCM or any other modules? If not, then I'd explore why. If you have comm, then ensure no codes are present in the PCM or other modules. Look at the ac request and ac pressure pids. The pressures indicated on the scan tool ... Login to read more.