"Service Stability" just started appearing on my 2006 Tahoe. My bluetooth scantool is not returning any codes. I don't notice any difference driving since the message came on but the message appears each time i start it up. A week prior to the warning appearing, I removed all 4 plastic wheel well covers to add a coating of fluid film to get ready for winter. I do hear some 'woo, woo, woo' coasting downhills but there is no play 12-6 on the front wheels. Any thoughts on next steps or things to check?