Back to 2021 GMC Sierra 2500HD

2021 GMC SIERRA 2500HD

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

Repairs0 Labor586 Torque5921 Fluid9 DTC821 Battery0 Maintenance0 Recalls0

fuel

High Pressure Fuel Pump Torque Specs

for 2021 GMC Sierra 2500HD 6.6L V8 Duramax Diesel · 4WD

Units

11 fasteners

Seq

Component

Torque

Angle

—

Bracket Bolts

15 lb-ft · 20 Nm

—

—

Cover Screws

8 lb-ft · 11 Nm

—

—

Filter Bracket

11 lb-ft · 15 Nm

—

—

Fuel Line Fittings

Critical

Use new O-rings

18 lb-ft · 25 Nm

—

—

Fuel Rail Bolts

9 lb-ft · 12 Nm

—

—

Hose Clamps

2 lb-ft · 3 Nm

—

—

Line Fittings

Critical

20 lb-ft · 27 Nm

—

—

Line Fittings

Critical

Use new O-rings

27 lb-ft · 37 Nm

—

—

Mounting Bolts

20 lb-ft · 27 Nm

—

—

Pressure Regulator Screws

7 lb-ft · 9 Nm

—

—

Pump Mounting

Critical

14 lb-ft · 19 Nm

—

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