engineExhaust Manifold Torque Specsfor 2021 GMC Sierra 1500 6.2L V8 · RWDUnitslb-ftNm12 fastenersSeqComponentTorqueAngle—Cover Bolts16 lb-ft · 22 Nm——EGR Tube Fitting46 lb-ft · 62 Nm——Electrical Connector Bolts7 lb-ft · 9 Nm——Exhaust Manifold BoltsCenter-out sequence.18 lb-ft · 25 Nm——Exhaust Manifold NutsApply anti-seize32 lb-ft · 43 Nm——Flange BoltsAnti-seize47 lb-ft · 64 Nm——Gasket Surface BoltsClean mating surfaces20 lb-ft · 27 Nm——Hanger Bolts20 lb-ft · 27 Nm——Heat Shield Bolts13 lb-ft · 18 Nm——Mounting Bolts47 lb-ft · 64 Nm——O2 SensorApply anti-seize to threads46 lb-ft · 62 Nm——Sensor Mounting Bolts11 lb-ft · 15 Nm—📝 Suggest a correction to this torque spec