Rock Auto sells parking brake shoes for CHEAP! Just do both sides.
Id bet you've got a partially-seized parking brake cable holding that one side out, or you had a wheels seal fail and contaminate the pb pads.
"BBT" -- 2003 GMC 2500HD CC/SB 4x4 - 12.14 @ 111.15
"Kleshay" -- 2000 C5 Corvette -- the toy
"The Cruzer" -- 2014 Chevy Cruze Diesel -- the DD
Marlene (Molly) Bacon -- 1936 - 2019 -- RIP Mom
You're missed both at home and on the piano
Success is getting what you want. Happiness is wanting what you get.
Reality is a matter of perspective.