engine

Head Gasket - Single Torque Specs

for 2012 GMC Yukon 5.3L V8 · RWD

Units

21 fasteners

Seq

Component

Torque

Angle

—

Camshaft Bearing Cap Bolts

Tighten in sequence, 3 passes

10 lb-ft · 14 Nm

—

Camshaft Cap Bolts

Tighten in sequence from center outward, multiple passes

10 lb-ft · 14 Nm

—

Camshaft Sprocket Bolt

Hold cam with wrench on hex

59 lb-ft · 80 Nm

—

Cover Bolts

15 lb-ft · 20 Nm

—

Cylinder Head Bolts

CHECK BOLT LENGTH. If all equal: 22 lb-ft + 90° + 90°. If unequal (pre-2004): 22 lb-ft + 90° + 90° (short: +50°).

22 lb-ft · 30 Nm

90°

—

Cylinder Head Bolts Step 1

Always use new TTY bolts

30 lb-ft · 40 Nm

—

Cylinder Head Bolts Step 2

Tighten in sequence

59 lb-ft · 80 Nm

—

Cylinder Head Bolts Step 3 (90 deg)

Plus 90 degrees

7 lb-ft · 10 Nm

—

Electrical Connector Bolts

6 lb-ft · 8 Nm

—

Exhaust Manifold Nuts

Apply anti-seize, work hot-to-cold

22 lb-ft · 30 Nm

—

Gasket Surface Bolts

Clean mating surfaces

19 lb-ft · 26 Nm

—

Intake Manifold Bolts

Tighten in sequence

18 lb-ft · 25 Nm

—

Mounting Bolts

44 lb-ft · 60 Nm

—

Oil Drain Plug

Use new crush washer

26 lb-ft · 35 Nm

—

Rocker Arm Bolts

Tighten with cam lobe pointing away

22 lb-ft · 30 Nm

—

Sensor Mounting Bolts

10 lb-ft · 14 Nm

—

Thermostat Housing Bolts

11 lb-ft · 15 Nm

—

Timing Chain Guide Bolts

Replace if worn

9 lb-ft · 12 Nm

—

Timing Chain Tensioner Bolt

Install with pin/clip to compress

18 lb-ft · 25 Nm

—

Valve Cover Bolts

Tighten in sequence

7 lb-ft · 10 Nm

—

Water Pump Bolts

Tighten in criss-cross pattern

18 lb-ft · 25 Nm

—

2012 GMC YUKON

21 fasteners