engine

Exhaust Manifold Torque Specs

for 2012 GMC Yukon 5.3L V8 · RWD

Units

12 fasteners

Seq

Component

Torque

Angle

—

Cover Bolts

15 lb-ft · 20 Nm

—

Electrical Connector Bolts

6 lb-ft · 8 Nm

—

Exhaust Flange Bolts

Apply anti-seize | ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

33 lb-ft · 45 Nm

—

Exhaust Manifold Bolts

Prone to snapping heads off. Use anti-seize.

18 lb-ft · 25 Nm

—

Exhaust Manifold Nuts

Apply anti-seize, work hot-to-cold | ⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

22 lb-ft · 30 Nm

—

Flange Bolts

Anti-seize

44 lb-ft · 59 Nm

—

Gasket Surface Bolts

Clean mating surfaces

19 lb-ft · 26 Nm

—

Hanger Bolts

19 lb-ft · 25 Nm

—

Heat Shield Bolts

⚠️ VERIFY SEQUENCE WITH SERVICE MANUAL

7 lb-ft · 10 Nm

—

Mounting Bolts

44 lb-ft · 60 Nm

—

O2 Sensor

Anti-seize threads

44 lb-ft · 59 Nm

—

Sensor Mounting Bolts

10 lb-ft · 14 Nm

—

2012 GMC YUKON

12 fasteners