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 MANUALSCHEVROLET2004AVALANCHE 2500 2WD V8-8.1L VIN GREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYTORQUE SPECIFICATION
2004 Chevrolet Avalanche 2500 2WD V8-8.1L VIN G
Torque Specification
2004 Chevrolet Avalanche 2500 2WD V8-8.1L VIN GSECTION Torque Specification
Important: The Cylinder Head bolts are NOT reusable.
Cylinder Head Bolts - In Sequence Service and Repair
First Pass 30 Nm (22 ft. lbs.)
Second Pass 30 Nm + 120 Degrees (22 ft. lbs. + 120 Degrees)
Final Pass - Long Bolts #1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 16, 17 60 Degrees
Final Pass - Medium Bolts #15, 18 45 Degrees
Final Pass - Short Bolts #4, 5, 12, 13 30 Degrees
Cylinder Head Coolant Hole Plug 50 Nm (37 ft. lbs.)
Exhaust Manifold Center Bolt 35 Nm (26 ft. lbs.)
Exhaust Manifold Nut 16 Nm (12 ft. lbs.) Service and Repair
Intake Manifold Bolts - In Sequence Service and Repair
First Pass 5 Nm (44 inch lbs.)
Second Pass 8 Nm (71 inch lbs.)
Third Pass 12 Nm (106 inch lbs.)
Final Pass 15 Nm (11 ft. lbs.)
Cylinder Head Bolts - In Sequence Service and Repair
First Pass 30 Nm (22 ft. lbs.)
Second Pass 30 Nm + 120 Degrees (22 ft. lbs. + 120 Degrees)
Final Pass - Long Bolts #1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 16, 17 60 Degrees
Final Pass - Medium Bolts #15, 18 45 Degrees
Final Pass - Short Bolts #4, 5, 12, 13 30 Degrees
Cylinder Head Coolant Hole Plug 50 Nm (37 ft. lbs.)
Exhaust Manifold Center Bolt 35 Nm (26 ft. lbs.)
Exhaust Manifold Nut 16 Nm (12 ft. lbs.) Service and Repair
Intake Manifold Bolts - In Sequence Service and Repair
First Pass 5 Nm (44 inch lbs.)
Second Pass 8 Nm (71 inch lbs.)
Third Pass 12 Nm (106 inch lbs.)
Final Pass 15 Nm (11 ft. lbs.)
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.