Escalade Tire Pressure Warning

Just bought a used 2007 Escalade ESV. The tire warning light is ON for both front tires. The pressure has been adjusted and reads correct at 35 PSI. I have been through the process of re-registering the tires, but nothing changes. Can anyone assist with some ideas on how to correct this?

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ORIGINAL: andyteich

Just bought a used 2007 Escalade ESV. The tire warning light is ON for both front tires. The pressure has been adjusted and reads correct at 35 PSI. I have been through the process of re-registering the tires, but nothing changes. Can anyone assist with some ideas on how to correct this?

 
Did they put on new tires before you bought it. Possible tire sensor damage, but should be covered if you bought from a dealer.