I took my 2017 Sierra in a few months ago for the reprogramming. A few weeks after the reporgramming, while I was backing up in a parking lot space, the ABS triggered everytime I pushed the brake pedal. It was a once occurance which I could not replicate again. Since then, over the weeks, I noticed that the ABS would start triggering sporadically when I was pulling up or backing out of my slighlty sloped driveway. I figured it was the vacuum pump going bad.
I scheduled service and took the truck to the local dealership. The service advisor was knowledgable on the problem and was able to replicate the slow speed ABS trigger quickly. My truck is beyond the bumper to bumper warranty but my service was covered under the extended brake recall warranty. The vacuum pump was replaced within a day. I was worried it was going to be a back ordered part due to the strike.
It has been a few days since the service was completed and I have not had any more issues. I hope the new vacuum pump was manufactured by a diferent company or improved upon. We shall see if anymore problems show up...
