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heater service

  1. "Heater Service" message. What need to be done?

    Problems, Driver Warnings or DTCs - Gen2 Volt
    I got a message "Heater Service" or "Heater Maintenance" or something like that. I don't remember exactly. I pressed "Dismiss" and the message never came back. What is it? Do I need to do anything about it? My oil change/maintenance is about 50% away. The mileage is about 29000 km (18000 miles).
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