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2012 GMC SIERRA 2500HD

6.6L V8 Duramax Diesel4WDAUTOMATICdieselturbo
Repairs0Labor592Torque4849Fluid9DTC814Battery0Maintenance0Recalls0
engine

Cylinder Head R&R Torque Specs

for 2012 GMC Sierra 2500HD 6.6L V8 Duramax Diesel · 4WD
Units

9 fasteners

Seq
Component
Torque
Angle
Cover Bolts
16 lb-ft · 22 Nm
Cylinder Head Bolts (M12)
Critical
1) 37 lb-ft. 2) 59 lb-ft. 3) +60 degrees. 4) +60 degrees.
37 lb-ft · 50 Nm
120°
Cylinder Head Bolts (M8)
Critical
Tighten small bolts to 18 lb-ft last.
18 lb-ft · 25 Nm
Electrical Connector Bolts
7 lb-ft · 9 Nm
Gasket Bolts
Critical
15 lb-ft · 20 Nm
Gasket Surface Bolts
Critical
Clean mating surfaces
20 lb-ft · 27 Nm
Mounting Bolts
Critical
47 lb-ft · 64 Nm
Sensor Bolts
8 lb-ft · 11 Nm
Sensor Mounting Bolts
11 lb-ft · 15 Nm
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