engine

Head Gaskets - Both Torque Specs

for 2021 GMC Sierra 1500 6.2L V8 · RWD

Units

12 fasteners

Seq

Component

Torque

Angle

—

Camshaft Cap Bolts

Torque sequence

16 lb-ft · 22 Nm

—

Cover Bolts

16 lb-ft · 22 Nm

—

Cylinder Head Bolts

Multi-step + angle

88 lb-ft · 119 Nm

—

Cylinder Head Bolts (M11)

TTY Bolts. Step 1: 22 lb-ft. Step 2: 90 deg. Step 3: 90 deg. Spiral sequence.

22 lb-ft · 30 Nm

180°

—

Cylinder Head Bolts (M8)

Upper row small bolts. Tighten to 22 lb-ft in sequence (inner to outer).

22 lb-ft · 30 Nm

—

Electrical Connector Bolts

7 lb-ft · 9 Nm

—

Exhaust Manifold Nuts

34 lb-ft · 46 Nm

—

Gasket Surface Bolts

Clean mating surfaces

20 lb-ft · 27 Nm

—

Intake Manifold Bolts

24 lb-ft · 33 Nm

—

Mounting Bolts

47 lb-ft · 64 Nm

—

Sensor Mounting Bolts

11 lb-ft · 15 Nm

—

Valve Cover Bolts

14 lb-ft · 18 Nm

—

2021 GMC SIERRA 1500

12 fasteners