I recently bought a 2007 Silverado, regular cab. The spare tire tools (and jack) were missing. I plan to use a hydraulic bottle jack for lifting but I need to know the dimensions of the "square drive" end of the hoist operating rod so I can fabricate a rod to operate the spare tire hoist. I know it is neither 3/8" nor 1/2' square drive, so a long extension from my tool box isn't gonna do the trick. I can't get an eyeball on the female receiver for the rod. Anybody out there can measure this square drive end and post the dimensions please?