GMC shift lever movement

I have a 99’ GMC 1500 Sierra SLT w/5.3 Vortec V-8 w/460,000 miles (yup !!) I bought the p/u w/59,000 miles, and the gear-selection lever on the column has always been hard to move when selecting gears. Does anyone out there have the “fix” for me ?? (my daughter drives the p/u, and is hard for her to select gears)–TY-Duane

Lubrication? I’m talking about the shift mechanism at the transmission and the cable that operates it.