If your pantry has the same double action slides that mine has I think you are better off just removing the 3 screws on each side and lifting the tray out.
If you find the release you will have to push the slides back into the cabinet as someone holds the weight of the tray because there is not enough clearance in front of the pantry to pull the tray off the slides.
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles