The correct distance from the end of the bed to the centerline of the rack hole in the GMC is 5 inches. Someone made a hole in the base plates that was 3.5 inches less than an inch and a half, so they made a second hole that was 6.5 inches less than an inch and a half more than vice versa. It requires a machine shop to modify properly.
20 Cubic Feet Waterproof FieryRed Car Roof Bag Cargo Carrier - Anti-Slip Mat, Travel Storage Luggage Bag Soft-Shell For All Vehicles With Or Without Rack
14 Review
MotorFansClub Roof Rack Cross Bars For Jeep Cherokee 2014-2019 | Aluminum Cargo Luggage Rail (Not Compatible With Grand Cherokee)
26 Review
CURT 18112 Black Aluminum Hitch Cargo Carrier with Ramp: 50 x 30-1/2-Inch, 2-in Folding Shank - Ultimate Versatility for Easy Travel
16 Review
Universal SUV Car Top Luggage Holder With Extension - XCAR Roof Rack Carrier Basket Rooftop Cargo Carrier, Black, 64"X 39"X 6
14 Review
Yokohama Ice Guard IG50 215/50 R17 99Q winter
36 Review
4WD ORCISH Recovery Traction Boards Tracks Tire Ladder For Sand Snow Mud - Set Of 2 (2Nd Gen Bag + Mounting Pins, Black)
39 Review
Nokian Tires Hakka Green 3 205/55 R16 94H summer
37 Review
ORCISH 12V 13000-lb Load Capacity Electric Truck Winch Kit π with Synthetic Rope - Waterproof Off Road Winch for Jeep, Truck, SUV
35 Review