How do I attach a Dexcom G6 CGM transmitter? [video]

Watch the following video to learn how to attach a transmitter:

For the Dexcom G6 GCM, please follow these steps to attach a transmitter:

A) Take transmitter out of the box

B) Snap in transmitter

  1. Clean transmitter with alcohol wipe.
  2. Insert transmitter, tab first, into holder.
  3. Snap in transmitter. It clicks into place. Make sure it is flat and snug in holder.
  4. Rub around patch three times.

For more information and a step-by-step guide on how to attach a transmitter, please consult the G6 Start Here Guide (Step 3):

Dexcom G6 Start Here Guide >

Important note about Dexcom support:

Dexcom and Tandem have agreed which system issues are best handled by each company, including which company is responsible for reporting those events to the appropriate regulatory authority. To help ensure that the required reporting takes place in a timely fashion, customers may need to contact Dexcom for some issues and Tandem for others.

Tandem handles issues such as loss of connection (on pump only) and the invalid transmitter (Alert 29) on pump only.

For all other CGM issues, including would not accept calibration, the sensor failure during the 2-hour warmup, “no restarts” alert or physical problems with your sensor or transmitter, such as bleeding, bruising, skin reaction, adhesive issues, applicator issues, or broken wires, you should contact Dexcom using one of the options at

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