Back to 2017 GMC Sierra 2500HD

2017 GMC SIERRA 2500HD

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

Repairs0 Labor562 Torque5869 Fluid9 DTC821 Battery0 Maintenance0 Recalls0

ignition

Spark Plug Wires Torque Specs

for 2017 GMC Sierra 2500HD 6.6L V8 Duramax Diesel · 4WD

Units

12 fasteners

Seq

Component

Torque

Angle

—

Bracket Bolts

20 lb-ft · 27 Nm

—

—

Connector Bolts

7 lb-ft · 9 Nm

—

—

Cover Screws

8 lb-ft · 11 Nm

—

—

Cover Screws

11 lb-ft · 15 Nm

—

—

Engine Cover Clips

2 lb-ft · 3 Nm

—

—

Ignition Coil Bolt

8 lb-ft · 11 Nm

—

—

Ignition Coil Bolts

6 lb-ft · 8 Nm

—

—

Mounting Bolts

27 lb-ft · 37 Nm

—

—

Mounting Bolts

20 lb-ft · 27 Nm

—

—

Sensor Bolts

11 lb-ft · 15 Nm

—

—

Spark Plug

Critical

Gap before install

15 lb-ft · 20 Nm

—

—

Spark Plugs - Aluminum Head

Critical

Apply anti-seize to threads

15 lb-ft · 20 Nm

—

⚠ STILL BEHIND THE PAYWALL

The 2017 GMC Sierra 2500HD repair data is incomplete because no one has sponsored it yet. For $99, we generate the full step-by-step procedures, then fact-check them with a second AI pass and your expert review. Your name on every procedure, permanently.

The same data would cost $169/mo from Mitchell1 or $30/year from ALLDATAdiy — and you'd be renting access, not freeing it. Sponsor once, free forever.

Sponsor the GMC Sierra 2500HD — $99 →

Building an app?

Free API access to all this data — 50 requests/day, no card required.

Get an API key →

Run a shop?

Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.

Try ShopBase →