Pre-facelift GMC C/K Facelifted GMC C/K This body style lasts 14 years (1973-1987) without a major redesign. The similar SUVs ( Chevrolet K5 Blazer and Suburban ) last 17 years 73-91. This helps keep resale values high. This generation's longevity is the basis for Chevy's slogan, "The Most Dependable, Longest Lasting