Fits 1988 89 Chevrolet GMC Truck Rear End Housing Brake Line HBL438 air cleaners and hardware 25 Oxygen Sensor Location Pre Distribute Balanced N2O Amounts 25 Oxygen Sensor Location Pre and Post Converter Series OEM Grade Core Substrate Material Ceramic Universal Or Specific Fit Specific 000 Volts Spark Series Duration 20° Crankshaft Rotation Voltage Required 12 18 Volts Year Make Model 1988 Gmc Astro 1988 1989 Gmc B6000 1988 Gmc Brigadier 1988 1989 Gmc C1500 1988 1989 Gmc C2500 1988 1989 Gmc C3500 1988 1989 Gmc C5000 1988 1989 Gmc C6000 1988 1989 Gmc C7000 1988 1989 Gmc G1500 1988 1989 Gmc G2500 1988 1989 Gmc G3500 1988 Gmc General 1988 1989 Gmc Jimmy 1988 1989 Gmc K1500 1988 1989 Gmc K2500 1988 1989 Gmc K3500 1988 1989 Gmc P2500 1988 1989 Gmc P3500 1988 1989 Gmc P4500 1988 1989 Gmc P60 1988 1989 Gmc P6000 1988 1989 Gmc R1500 Suburban 1988 1989 Gmc R2500 1988 1989 Gmc R2500 Suburban 1988 1989 Gmc R3500 1988 1989 Gmc S15 1988 1989 Gmc S15 Jimmy 1988 1989 Gmc Safari 1988 1989 Gmc V1500 Suburban 1988 1989 Gmc V2500 Suburban 1988 1989 Gmc V3500 1988 1989 Gmc W5500 Forward 1988 1989 Gmc W6500 Forward 1988 1989 Gmc W7500 Forward 1989 Gmc Tracker 1988 1989 Chevrolet C10 1988 1989 Chevrolet C20 1988 1989 Chevrolet C30 1988 1989 Chevrolet K10 1988 1989 Chevrolet K20 1988 1989 Chevrolet K30 standard cab