No bus data from climate control module means the PCI data bus isn't seeing any info from the climate control panel. All the modules (computers) in the van communicate over two wires called the PCI multiplex data bus. It acts just like the data bus on your home computer. The module in the climate control panel isn't communicating. Could be as simple as a loose connection on the panel. A common problem is overheated and melted connectors on the panel. Might try removing it and checking the connector.
Your mileage is off because they just changed your BCM and neglected to reprogram the correct mileage figure into it. The BCM controls the mileage figure on your odometer.
Why was the BCM?PCM? replaced? Can you expand on "acting crazy". What model year?
Last edited by RIP; 11-12-2009 at 11:36 PM.
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96 Gr Caravan LE 3.8, 214K miles
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