exhaustDownpipe Torque Specsfor 2021 GMC Yukon 3.0L I6 Duramax Diesel · 4WDUnitslb-ftNm7 fastenersSeqComponentTorqueAngle—Cover Screws8 lb-ft · 11 Nm——Exhaust Flange BoltsCriticalApply anti-seize33 lb-ft · 45 Nm——Flange BoltsCritical37 lb-ft · 50 Nm——Hanger Bolts16 lb-ft · 21 Nm——Heat Shield Bolts7 lb-ft · 10 Nm——Mounting Bolts21 lb-ft · 28 Nm——O2 SensorCriticalApply anti-seize to threads only33 lb-ft · 45 Nm—📝 Suggest a correction to this torque spec