GMC C20 Tire Sizes by Year

• 1988 — Pick-up 2wd
• 1987 — Pick-up 2wd
• 1986 — Pick-up 2wd
• 1985 — Pick-up 2wd
• 1984 — Pick-up 2wd
• 1983 — Pick-up 2wd
• 1982 — Pick-up 2wd