Garmin G3X Touch Installation Manual page 697

c) Press the Autopilot button.
d) Select YAW DAMPER page and highlight the SERVO GAIN entry.
e) Adjust the servo gain so that the aircraft properly responds to the yaw body rates (tail
wagging)
i. Engage the autopilot in LVL mode with the aircraft approximately level
ii. With a GMC 30X Controller
190-01115-01 G3X/G3X Touch Install Manual - GDU 4XX Config and Post Install Checkout
Rev. AC
1.Press the LVL button on the GMC 30X to engage the AP in LVL mode
2.Press the YD button on the GMC 30X to disengage the YD
Page 34-79