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  1. #1

    Default 2008 GMC Sierra Rear Veiw Mirror???

    Is it possible to put the rear view mirror with the temperature and compass in a Sierra that didn't have it? The one I have has OnStar in it but no temperature and compass. If so what all is involved? I assume there has to be a temp sensor of some kind and a compass somewhere.

    Thanks in advance for any info.

  2. #2


    Do you know what I would do? Your question makes me think you have a truck without the Driver Info Center (DIC). I have read that all you need to activate the DIC is the switch assembly that mounts through the dash to the right of the cluster. apparently all wiring is there and all that is required is the switch assembly. A fully operating DIC will provide the outside temp and the compass, along with a host of other readings. Mine provides fuel mileage, transmission temp, tire pressure, etc.

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

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