GTM™ 20

Part Number: 010-00544-01
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The GTM 20 is an integrated FM Traffic Message Channel (TMC) traffic receiver, antenna and 12-volt power adapter. It receives digital traffic information for North America,* allowing your compatible Garmin device to route you around accidents, construction and other obstacles to save you time.

  • Covers North America.
  • Combines antenna, traffic link and 12-volt power adapter.
  • No professional installation required — just plug it in and drive.
  • Real-time traffic data — no waiting for scheduled traffic news updates or random alerts.
  • Won't interfere with music or news on your FM car radio.

*Traffic services are available only in select cities where coverage exists. A subscription may be required to enable traffic service.

Total Traffic Network


Physical & Performance

Physical dimensions cable cord 5.4' (164.6 cm); cigarette lighter adapter 4.5" (11.43 cm); 18-pin plug 1" (2.54 cm); total length 70.3" (178.56 cm)
Weight 2.7 ounces (76.5 grams)

In the Box

  • GTM 20 FM TMC traffic receiver
  • Owner’s manual


Compatible Devices