enginePiston - Single Torque Specsfor 2021 GMC Sierra 1500 3.0L I6 Duramax Diesel · RWDUnitslb-ftNm11 fastenersSeqComponentTorqueAngle—Connecting Rod BoltsTTY - critical torque plus angle33 lb-ft · 45 Nm——Cover Bolts13 lb-ft · 18 Nm——Cylinder Head BoltsTTY - tighten in sequence plus angle48 lb-ft · 65 Nm——Electrical Connector Bolts5 lb-ft · 7 Nm——Gasket Bolts16 lb-ft · 21 Nm——Gasket Surface BoltsClean mating surfaces16 lb-ft · 22 Nm——Mounting Bolts37 lb-ft · 50 Nm——Oil Drain PlugUse new crush washer26 lb-ft · 35 Nm——Oil Pan Bolts9 lb-ft · 12 Nm——Sensor Bolts8 lb-ft · 11 Nm——Sensor Mounting Bolts8 lb-ft · 11 Nm—📝 Suggest a correction to this torque spec