Home › Forum › GMC › 2015 GMC 1500 TPMS This topic contains 0 replies, has 1 voice, and was last updated by Woodsman 3 months ago. Author Posts April 14, 2018 at 4:37 pm #490438 WoodsmanParticipant INSTALLED NEW RIMS W/ AFTERMARKET TPMS SENSORS. PURCHASED SYNCING TOOL. SYNCS UP OK, BUT FRONT SENSORS KEEP UNSYNCING. HOW DO I FIX THIS? Author Posts You must be logged in to reply to this topic.