Q: Message Center display "Oil Level Low Add Oil" What sensor sends a message to ? on 2007 GMC Yukon XL Denali

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Oil is full. Message was displayed before oil change. Immediatly after servicing the vehicle the same message returned.
(1) Answer
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oil sensor could be bad. i would have it replaced because it will mess with the computer . also check to see if wire going to oil sensor is ok, could just be loose wire.
Thanks for your answer. I have unplugged the sensor and verified the wire and plug are in good shape. I will now change the sensor. I was wondering if there was another sensor that fed the message center. Thanks again.