Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2012CRUZE L4-1.8LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINECYLINDER HEAD ASSEMBLYSPECIFICATIONS
2012 Chevrolet Cruze L4-1.8L
Cylinder Head Assembly: Specifications
2012 Chevrolet Cruze L4-1.8LSECTION Specifications
Cylinder Head
First pass to 25 Nm (18 lb ft)
Second pass to 90°
Third pass to 90°
Fourth pass to 90°
Fifth pass to 45°
Surface Flatness - Block Deck - Longitude
If the deck surface is out of specification, replace the cylinder head. Do not machine the cylinder head.
Surface Flatness - Block Deck - Overall
If the deck surface is out of specification, replace the cylinder head. Do not machine the cylinder head.
Surface Flatness - Block Deck - Transverse
If the deck surface is out of specification, replace the cylinder head. Do not machine the cylinder head.
Camshaft Bearing Cap Bolt
Install the 8 intake camshaft bearing cover bolts and tighten in a spiral from the inside
to the outside to 8 Nm (71 lb in)
Install the 8 exhaust camshaft bearing cover bolts and tighten in a spiral from the inside
to the outside to 8 Nm (71 lb in).
Intake Manifold Service and Repair
Exhaust Manifold Service and Repair
Camshaft Gear/Sprocket
Camshaft Position adjuster closure bolt 30Nm
Refer to Camshaft Position Actuator Adjuster Replacement. Camshaft Position Actuator Adjuster Replacement
First pass to 25 Nm (18 lb ft)
Second pass to 90°
Third pass to 90°
Fourth pass to 90°
Fifth pass to 45°
Surface Flatness - Block Deck - Longitude
If the deck surface is out of specification, replace the cylinder head. Do not machine the cylinder head.
Surface Flatness - Block Deck - Overall
If the deck surface is out of specification, replace the cylinder head. Do not machine the cylinder head.
Surface Flatness - Block Deck - Transverse
If the deck surface is out of specification, replace the cylinder head. Do not machine the cylinder head.
Camshaft Bearing Cap Bolt
Install the 8 intake camshaft bearing cover bolts and tighten in a spiral from the inside
to the outside to 8 Nm (71 lb in)
Install the 8 exhaust camshaft bearing cover bolts and tighten in a spiral from the inside
to the outside to 8 Nm (71 lb in).
Intake Manifold Service and Repair
Exhaust Manifold Service and Repair
Camshaft Gear/Sprocket
Camshaft Position adjuster closure bolt 30Nm
Refer to Camshaft Position Actuator Adjuster Replacement. Camshaft Position Actuator Adjuster Replacement
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.