2012 GMC Yukon XL
Mileage
138,656
Service Date
8/3/2023
Services Performed
- Verified customer's complaint, then scanned for codes to find that there is a stored code for the liftgate latch circuit. Verified fuses, circuits, and connections. Used scan tool to command the liftgate power motor assembly up and down to find that it responds intermittently. Located a GM documented TSB that details this and recommends replacing the liftgate latch assembly before replacing the liftgate power control unit.
- Removed, replaced, and programmed the latch assembly to find that the latch now functions as it should, but the power liftgate unit is intermittent at best. Removed trim panel for visual/physical inspection to find that the gears are worn and binding near the top and bottom of travel, which is engaging the safety cutout switch. Recommend replacing the liftgate power control unit as well.
- Removed and replaced power liftgate control unit, programmed, and verified proper operation of all power liftgate function.
Ron W. gave our service a 5 star review on 8/5/2023
