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Home >> GMC >> 1999 >> Yukon Base, 4WD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Remote Keyless Entry Systems >> Description & Operation (Standard Keyless Entry System) >> Standard Keyless Entry System Circuit Description >> Liftgate Unlock
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Liftgate Unlock

When the REAR 2X unlock button is depressed twice, the remote control door lock receiver sends a voltage signal through CKT 1576 (BLK) to the liftgate release motor. See WIRING DIAGRAMS  . Since CKT 1737 (YEL) grounds through the Park/Neutral Position Switch to CKT 150 (BLK) to G105, the liftgate is released. The vehicle must be in Park or Neutral for the liftgate to release.