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 MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 232 (ENGINE COOLING SYSTEM)SPECIFICATIONSFASTENER TIGHTENING SPECIFICATIONS
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Fastener Tightening Specifications
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Fastener Tightening Specifications
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Fastener Tightening Specifications
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Air Cleaner Outlet Duct Clamp Screw (4.8L, 5.3L, and 6.0L Engines) | 7 N.m | 62 lb in |
| Air Cleaner Outlet Duct Wingnut (4.3L Engine) | 3 N.m | 27 lb in |
| Coolant Air Bleed Pipe Stud/Bolt (4.8L, 5.3L, and 6.0L Engines) | 12 N.m | 106 lb in |
| Coolant Heater (4.8L, 5.3L, 6.0L Engines) | 50 N.m | 37 lb ft |
| Coolant Heater Bolt (4.3L Engine) | 2 N.m | 18 lb in |
| Coolant Heater Cord Bolt | 8 N.m | 71 lb in |
| Coolant Recovery Reservoir Bolt | 11 N.m | 97 lb in |
| Drive Belt Tensioner Bolt | 50 N.m | 37 lb ft |
| Engine Block Coolant Drain Plug (4.3L Engine) | 20 N.m | 15 lb ft |
| Engine Coolant Heater Cord Bracket Bolt | 12 N.m | 106 lb in |
| Engine Coolant Heater Cord Clip Bolt | 12 N.m | 106 lb in |
| Engine Coolant Temperature Sensor | 20 N.m | 15 lb ft |
| Fan and Clutch Retaining Nut to Water Pump Pulley (4.3L) | 57 N.m | 42 lb in |
| Fan and Water Pump Pulley Bolt (4.3L Engine) | 25 N.m | 18 lb ft |
| Fan Clutch Bolt (4.8L, 5.3L and 6.0L) | 23 N.m | 17 lb ft |
| Fan Clutch Nut (4.8L, 5.3L and 6.0L) | 56 N.m | 41 lb ft |
| Fan Clutch Retaining Bolts (4.3L) | 33 N.m | 24 lb ft |
| Fan Shroud Bolt | 9 N.m | 80 lb in |
| Oil Cooler Hose Adapter Bolt (4.8L, 5.3L and 6.0L Engine) | 12 N.m | 106 lb in |
| Oil Cooler Hose Bracket Bolt (4.8L, 5.3L and 6.0L Engine) | 25 N.m | 18 lb ft |
| Oil Cooler Line Clip to Bracket Nut (4.3L) | 12 N.m | 106 lb in |
| Oil Cooler Line Fittings to the Oil Filter Base (4.3L) | 17 N.m | 13 lb ft |
| Oil Cooler Line Fittings to the Oil Filter Base (4.3L Auxiliary Oil Cooler) | 35 N.m | 26 lb ft |
| Oil Cooler Line Fittings to the Radiator (4.3L) | 24 N.m | 18 lb ft |
| Oil Level Indicator Tube and Transmission Fluid Fill Tube Lower Support Bolt (4.3L) | 4 N.m | 44 lb in |
| Radiator Bolt | 25 N.m | 18 lb ft |
| Radiator Surge Tank Bolt | 6 N.m | 53 lb in |
| Surge Tank Bolt/Nut | 9 N.m | 80 lb in |
| Thermostat Housing Bolt (4.3L) | 25 N.m | 18 lb ft |
| Thermostat Housing Bolt (4.8L, 5.3L, and 6.0L Engines) | 15 N.m | 11 lb ft |
| Thermostat Housing Crossover Bolt (6.0L Engine) | 21 N.m | 16 lb ft |
| Thermostat Housing Crossover Retaining Bolts (4.3L) | 47 N.m | 35 lb ft |
| Transmission Control Module (TCM) Cover Bolt | 9 N.m | 80 lb in |
| Transmission Control Module (TCM) Electrical Connector Bolt | 8 N.m | 71 lb in |
| Water Outlet Stud (4.3L Engine) | 25 N.m | 18 lb ft |
| Water Pump Bolt (4.3L Engine) | 45 N.m | 33 lb ft |
| Water Pump Bolt (First Pass) (4.8L, 5.3L, and 6.0L Engines) | 15 N.m | 11 lb ft |
| Water Pump Bolt (Final Pass) (4.8L, 5.3L, and 6.0L Engines) | 30 N.m | 22 lb ft |
RENDER: 1.0x
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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.