for 2021 GMC Sierra 2500HD 6.6L V8 Duramax Diesel · 4WD
Units
12 fasteners
Seq
Component
Torque
Angle
—
Cover Screws
8 lb-ft · 11 Nm
—
—
EGR Tube Fitting
26 lb-ft · 35 Nm
—
—
EGR Valve Bolts
18 lb-ft · 25 Nm
—
—
Flange Bolts
Critical
35 lb-ft · 47 Nm
—
—
Flange Bolts
Critical
Apply anti-seize
47 lb-ft · 64 Nm
—
—
Hanger Bolts
15 lb-ft · 20 Nm
—
—
Hanger Bolts
20 lb-ft · 27 Nm
—
—
Heat Shield Bolts
14 lb-ft · 19 Nm
—
—
Manifold Nuts
Critical
Apply anti-seize
34 lb-ft · 46 Nm
—
—
Mounting Bolts
20 lb-ft · 27 Nm
—
—
O2 Sensor
Critical
35 lb-ft · 47 Nm
—
—
O2 Sensor
Critical
Apply anti-seize to threads
47 lb-ft · 64 Nm
—
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