coolingRadiator Torque Specsfor 2000 GMC Sierra 1500 4.3L V6 Vortec · RWDUnitslb-ftNm11 fastenersSeqComponentTorqueAngle—Cover Screws8 lb-ft · 11 Nm——Drain PetcockPlastic - hand tight4 lb-ft · 5 Nm——Fan Bolts9 lb-ft · 12 Nm——Hose ClampsDo not overtighten3 lb-ft · 4 Nm——Housing Bolts10 lb-ft · 14 Nm——Mounting Bolts20 lb-ft · 27 Nm——Pump BoltsTorque in sequence21 lb-ft · 28 Nm——Radiator Mount BoltsDo not overtighten plastic mounts9 lb-ft · 12 Nm——Thermostat Housing Bolts12 lb-ft · 16 Nm——Transmission Cooler LinesIf equipped18 lb-ft · 25 Nm——Upper/Lower Hose Clamps2 lb-ft · 3 Nm—📝 Suggest a correction to this torque spec