engine
Piston Rings - All Torque Specs
for 2021 GMC Sierra 1500 3.0L I6 Duramax Diesel · RWD
13 fasteners
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Connecting Rod Bolts
TTY - critical torque plus angle
33 lb-ft · 45 Nm
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Cylinder Head Bolts
TTY - tighten in sequence plus angle
48 lb-ft · 65 Nm
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Electrical Connector Bolts
5 lb-ft · 7 Nm
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Gasket Surface Bolts
Clean mating surfaces
16 lb-ft · 22 Nm
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Main Bearing Cap Bolts
TTY - tighten in sequence plus angle
55 lb-ft · 75 Nm
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Oil Drain Plug
Use new crush washer
26 lb-ft · 35 Nm
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Oil Pan Bolts
Tighten in sequence
9 lb-ft · 12 Nm
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