I had the same experience at Discount Tire, although they initially ordered and installed the wrong (315mhz instead of 433mhz) sensors, so the TPMS light was constantly lit up. After reading this forum, I found the correct 433mhz part number and they ended up using a generic, programmable, TPMS sensor using the 433mhz frequency. After installing these new sensors they couldn't get their handheld reader to link them to my car, as it had no profile for the 2017 Volt. While in the store, I went back to these forums and someone mentioned tricking the reader by using another GM vehicle that used 433mhz. After much fretting they eventually gave this a try and it worked (I think it was a Corvette profile, not a Malibu). So if anyone is getting winter tires installed for their 2017 Volt, there is a way Costco or any other retailer can get the TPMS to work, but it is a workaround and takes some persuading.