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 |
Fastener Tightening Specifications