Garmin Customer Service Phone Number (+1844) 539=9831 Garmin Technical Support Phone Number(844) 539=9831- Info & Statistics. Phone number to dial 913-397-8200. Call-back available YES. Message & get attention NO. Call picked up by a real person YES. Department you're calling Technical Support. Call center hours Mon-Thu 8am-6pm, Fri 8am-5pm CST. Best time to dial 9:45am. Show More