engineExhaust Manifold Torque Specsfor 1997 GMC Yukon 5.7L V8 350 Vortec · 4WDUnitslb-ftNm8 fastenersSeqComponentTorqueAngle—Cover Bolts16 lb-ft · 22 Nm——Exhaust Flange BoltsCriticalApply anti-seize | ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL33 lb-ft · 45 Nm——Exhaust Manifold NutsCriticalApply anti-seize, work hot-to-cold | ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL22 lb-ft · 30 Nm——Flange BoltsCriticalAnti-seize47 lb-ft · 64 Nm——Hanger Bolts20 lb-ft · 27 Nm——Heat Shield BoltsCritical⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL7 lb-ft · 10 Nm——Mounting BoltsCritical47 lb-ft · 64 Nm——O2 SensorCriticalAnti-seize threads47 lb-ft · 64 Nm—📝 Suggest a correction to this torque spec