6.6L V8 Duramax Diesel•4WD•AUTOMATIC•diesel•turbo

Repairs0 Labor994 Torque4516 Fluid18 DTC3720 Battery2 Maintenance0 Recalls0

engine

Cylinder Head R&R Torque Specs

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

Units

10 fasteners

Seq

Component

Torque

Angle

—

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 (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

—

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

—

Electrical Connector Bolts

7 lb-ft · 9 Nm

—

Gasket Surface Bolts

Critical

Clean mating surfaces

20 lb-ft · 27 Nm

—

Gasket Surface Bolts

Critical

Clean mating surfaces

20 lb-ft · 27 Nm

—

Sensor Mounting Bolts

11 lb-ft · 15 Nm

—

Sensor Mounting Bolts

11 lb-ft · 15 Nm

—

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