Engine Firing Orders: 1986
GMC C 1500 P/U 2WD 4.8 liter L6 VIN "T" GMC C 1500 P/U 2WD 4.3 liter V-6 GMC C 1500 P/U 2WD 5.0 liter V-8 VIN "F" 4-bbl GMC C 1500 P/U 2WD 5.0 liter V-8 VIN "H" 4-bbl GMC C 1500 P/U 2WD 5.7 liter V-8 VIN "L" 4-bbl GMC C 1500 P/U 2WD 5.7 liter V-8 VIN "M" 4-bbl GMC C 2500 P/U 2WD 4.8 liter L6 VIN "T" GMC C 2500 P/U 2WD 4.3 liter V-6 GMC C 2500 P/U 2WD 5.0 liter V-8 GMC C 2500 P/U 2WD 5.7 liter V-8 VIN "L" 4-bbl GMC C 2500 P/U 2WD 5.7 liter V-8 VIN "M" 4-bbl GMC C 2500 P/U 2WD 7.4 liter V-8 VIN "W" GMC C 3500 P/U 2WD 4.8 liter L6 VIN "T" GMC C 3500 P/U 2WD 4.3 liter V-6 GMC C 3500 P/U 2WD 5.0 liter V-8 GMC C 3500 P/U 2WD 5.7 liter V-8 GMC C 3500 P/U 2WD 7.4 liter V-8 VIN "W" GMC G 1500 ½-Ton Van 4.3 liter V-6 GMC G 1500 ½-Ton Van 5.0 liter V-8 GMC G 1500 ½-Ton Van 5.7 liter V-8 GMC G 2500 ¾-Ton Van 4.3 liter V-6 GMC G 2500 ¾-Ton Van 5.0 liter V-8 VIN "F" 4-bbl GMC G 2500 ¾-Ton Van 5.0 liter V-8 VIN "H" 4-bbl GMC G 2500 ¾-Ton Van 5.7 liter V-8 GMC G 3500 1-Ton Van 4.3 liter V-6 GMC G 3500 1-Ton Van 5.0 liter V-8 GMC G 3500 1-Ton Van 5.7 liter V-8 VIN "L" 4-bbl GMC G 3500 1-Ton Van 5.7 liter V-8 VIN "M" 4-bbl GMC Jimmy Full Size 5.0 liter V-8 GMC Jimmy Full Size 5.7 liter V-8 GMC K 1500 P/U 4WD 4.8 liter L6 VIN "T" GMC K 1500 P/U 4WD 4.3 liter V-6 GMC K 1500 P/U 4WD 5.0 liter V-8 GMC K 1500 P/U 4WD 5.7 liter V-8 GMC K 2500 P/U 4WD 4.8 liter L6 VIN "T" GMC K 2500 P/U 4WD 4.3 liter V-6 GMC K 2500 P/U 4WD 5.0 liter V-8 GMC K 2500 P/U 4WD 5.7 liter V-8 VIN "L" 4-bbl GMC K 2500 P/U 4WD 5.7 liter V-8 VIN "M" 4-bbl GMC K 2500 P/U 4WD 7.4 liter V-8 VIN "W" GMC K 3500 P/U 4WD 4.8 liter L6 VIN "T" GMC K 3500 P/U 4WD 4.3 liter V-6 GMC K 3500 P/U 4WD 5.0 liter V-8 GMC K 3500 P/U 4WD 5.7 liter V-8 GMC K 3500 P/U 4WD 7.4 liter V-8 VIN "W" GMC S15/T15 2WD Jimmy 2.5 liter L4 VIN "E" GMC S15/T15 2WD Jimmy 2.8 liter V-6 VIN "R" GMC S15/T15 2WD P/U 2.5 liter L4 VIN "E" GMC S15/T15 2WD P/U 2.8 liter V-6 VIN "R" GMC S15/T15 4WD Jimmy 2.5 liter L4 VIN "E" GMC S15/T15 4WD Jimmy 2.8 liter V-6 VIN "R" GMC S15/T15 4WD P/U 2.5 liter L4 VIN "E" GMC S15/T15 4WD P/U 2.8 liter V-6 VIN "R" GMC Safari Van M 2.5 liter L4 VIN "E" GMC Safari Van M 4.3 liter V-6 GMC Suburban ½-Ton 2WD 5.0 liter V-8 GMC Suburban ½-Ton 2WD 5.7 liter V-8 GMC Suburban ½-Ton 4WD 5.0 liter V-8 GMC Suburban ½-Ton 4WD 5.7 liter V-8 GMC Suburban ¾-Ton 2WD 5.0 liter V-8 GMC Suburban ¾-Ton 2WD 5.7 liter V-8 GMC Suburban ¾-Ton 2WD 7.4 liter V-8 VIN "W" GMC Suburban ¾-Ton 4WD 5.0 liter V-8 GMC Suburban ¾-Ton 4WD 5.7 liter V-8 GMC Suburban ¾-Ton 4WD 7.4 liter V-8 VIN "W" GMC W Sprint/Caballero 4.3 liter V-6 GMC W Sprint/Caballero 5.0 liter V-8
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