Diagnostics

OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring System. If a diagnostics check is needed between e-mails, push OnStar Additional Information, and an Advisor can run a check.

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    Noise
    One thing those shoppers might find objectionable is the noise — specifically, wind noise and outside noise intrusion. Wind noise, an issue on highways, wasn't extremely loud, but there was a no ...

    Delayed Entry Lighting
    Delayed entry lighting illuminates the interior for a period of time after all the doors have been closed. The ignition must be off for delayed entry lighting to work. Immediately after all the doors ...

    Engine Coolant Temperature Gauge
    Metric English This gauge shows the engine coolant temperature. Under normal driving conditions the gauge will read approximately 100°C (210°F) or less. If the gauge pointer is near 125°C (26 ...