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 MANUALSCHEVROLET2010HHR L4-2.2LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINECYLINDER HEAD ASSEMBLYSPECIFICATIONS
2010 Chevrolet HHR L4-2.2L
Cylinder Head Assembly: Specifications
2010 Chevrolet HHR L4-2.2LSECTION Specifications
CYLINDER HEAD TORQUE AND SEQUENCE

Cylinder Head Bolt
First Pass 30 Nm (22 lb ft)
Final Pass 155 degrees
HEAD BOLD REUSE/REPLACE
Note: Always use new cylinder head bolts.
SURFACE VARIATION - HEAD-TO-BLOCK
Cylinder Head
Surface Flatness - Block Deck
Transverse 0.030 mm (0.0012 in)
Longitude 0.050 mm (0.002 in)
Overall 0.1 mm (0.004 in)
Cylinder Block
Cylinder Head Deck Surface Flatness
Transverse 0.030 mm (0.0012 in)
Longitude 0.050 mm (0.002 in)
Overall 0.08 mm (0.0031 in)
INTAKE MANIFOLD TORQUE AND SEQUENCE

Intake Manifold to Cylinder Head Bolt and Nut 10 Nm (89 lb in)
Intake Manifold to Cylinder Head Stud 6 Nm (53 lb in)
CAMSHAFT BEARING CAP TORQUE AND SEQUENCE
Install the camshaft caps and hand start the camshaft cap bolts.
Tighten the camshaft cap bolts in increments of 3 turns until they are seated.
Tighten the camshaft caps to 10 Nm (89 lb in)
CRANKSHAFT PULLEY TORQUE
Crankshaft Balancer Bolt
First Pass 100 Nm (74 lb ft)
Final Pass 125 degrees
EXHAUST MANIFOLD TORQUE AND SEQUENCE

Exhaust Manifold to Cylinder Head Nut 14 Nm (10 lb ft)
Install NEW exhaust manifold nuts.
Cylinder Head Bolt
First Pass 30 Nm (22 lb ft)
Final Pass 155 degrees
HEAD BOLD REUSE/REPLACE
Note: Always use new cylinder head bolts.
SURFACE VARIATION - HEAD-TO-BLOCK
Cylinder Head
Surface Flatness - Block Deck
Transverse 0.030 mm (0.0012 in)
Longitude 0.050 mm (0.002 in)
Overall 0.1 mm (0.004 in)
Cylinder Block
Cylinder Head Deck Surface Flatness
Transverse 0.030 mm (0.0012 in)
Longitude 0.050 mm (0.002 in)
Overall 0.08 mm (0.0031 in)
INTAKE MANIFOLD TORQUE AND SEQUENCE
Intake Manifold to Cylinder Head Bolt and Nut 10 Nm (89 lb in)
Intake Manifold to Cylinder Head Stud 6 Nm (53 lb in)
CAMSHAFT BEARING CAP TORQUE AND SEQUENCE
Install the camshaft caps and hand start the camshaft cap bolts.
Tighten the camshaft cap bolts in increments of 3 turns until they are seated.
Tighten the camshaft caps to 10 Nm (89 lb in)
CRANKSHAFT PULLEY TORQUE
Crankshaft Balancer Bolt
First Pass 100 Nm (74 lb ft)
Final Pass 125 degrees
EXHAUST MANIFOLD TORQUE AND SEQUENCE
Exhaust Manifold to Cylinder Head Nut 14 Nm (10 lb ft)
Install NEW exhaust manifold nuts.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
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Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.