Fastener Tightening Specifications
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. 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 (6.6L) | 6 N.m | 53 lb in |
| Air Cleaner Outlet Duct Clamp Screw (4.8L, 5.3L, and 6.0L) | 7 N.m | 62 lb in |
| Air Conditioning (A/C) Compressor Mounting Bolt (6.6L) | 50 N.m | 37 lb ft |
| Bypass Pipe to Water Pump Bolt (6.6L) | 21 N.m | 16 lb ft |
| Charged Air Cooler Duct Clamp (6.6L) | 6 N.m | 53 lb in |
| Coolant Air Bleed Pipe Stud/Bolt (4.8L, 5.3L, and 6.0L) | 12 N.m | 106 lb in |
| Coolant Crossover Bolt (8.1 L) | 50 N.m | 37 lb ft |
| Coolant Heater Bolt (6.6L) | 2 N.m | 18 lb in |
| Coolant Heater Cord Bolt | 8 N.m | 71 lb in |
| Coolant Heater Bolt (4.3L) | 2 N.m | 18 lb in |
| Coolant Heater (4.8L, 5.3L, and 6.0L) | 50 N.m | 37 lb ft |
| Coolant Heater (8.1 L) | 60 N.m | 47 lb ft |
| Engine Block Coolant Drain Plug (4.3L) | 20 N.m | 15 lb ft |
| Engine Block Coolant Drain Plug (4.8L, 5.3L, 6.0L, and 8.1 L) | 60 N.m | 44 lb ft |
| Engine Block Coolant Drain Plug (6.6L) | 18 N.m | 13 lb ft |
| Engine Coolant Temperature (ECT) Sensor (6.6L) | 33 N.m | 24 lb ft |
| Engine Shield Bolt | 20 N.m | 15 lb ft |
| Exhaust Manifold Pipe Nut (4.8L, 5.3L, and 6.0L) | 50 N.m | 37 lb ft |
| Fan Clutch Bolt | 23 N.m | 17 lb ft |
| Fan Clutch Nut | 56 N.m | 41 lb ft |
| Fan Pulley Bolt/Nut (6.6L) | 46 N.m | 34 lb ft |
| Fan Shroud Bolt | 9 N.m | 80 lb in |
| Fan and Water Pump Pulley Bolt (4.3L) | 25 N.m | 18 lb ft |
| Fuel Line Bracket Bolt (6.6L) | 21 N.m | 15 lb ft |
| Fuel Line to Fuel Injection Control Module Bolt (6.6L) | 35 N.m | 26 lb ft |
| Generator Bracket Bolt (6.6L) | 50 N.m | 37 lb ft |
| Generator Bracket Stud (8.1 L) | 20 N.m | 15 lb ft |
| Generator Positive Cable Nut (6.6L) | 9 N.m | 80 lb in |
| Heater Pipe to Fuel Filter Bolt (6.6L) | 21 N.m | 16 lb ft |
| Heater Pipe to Thermostat Bolt (6.6L) | 21 N.m | 16 lb ft |
| Heater Outlet Hose Bracket Bolt (6.6L) | 21 N.m | 16 lb ft |
| Idler Pulley Bolt (6.6L) | 43 N.m | 32 lb ft |
| Junction Block Bracket Bolt (6.6L) | 9 N.m | 80 lb in |
| Oil Cooler Hose Adapter Bolt (6.0L) | 12 N.m | 106 lb in |
| Oil Cooler Hose Bracket Bolt (6.0L) | 25 N.m | 18 lb ft |
| Oil Cooler Hose Bracket Bolt (8.1 L) | 50 N.m | 37 lb ft |
| Positive Crankcase Ventilation (PCV) Oil Separator Bracket Nut (6.6L) | 21 N.m | 16 lb ft |
| Power Steering Pump Bracket Bolt (6.6L) | 46 N.m | 34 lb ft |
| Radiator Bolt | 25 N.m | 18 lb ft |
| Surge Tank Bolt/Nut | 9 N.m | 80 lb in |
| Thermostat Housing Cover Bolt (6.6L) | 21 N.m | 16 lb ft |
| Thermostat Housing Bolt (4.8L, 5.3L, and 6.0L) | 15 N.m | 11 lb ft |
| Thermostat Housing Bolt (8.1 L) | 37 N.m | 27 lb ft |
| Thermostat Crossover Bolt (6.6L) | 21 N.m | 16 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 |
| Turbocharger Coolant Bypass Valve (6.6L) | 60 N.m | 44 lb ft |
| Turbocharger Outlet Coolant Pipe to Pipe Bracket Bolt (6.6L) | 21 N.m | 16 lb ft |
| Turbocharger Outlet Coolant Pipe Nut (6.6L) | 9 N.m | 80 lb in |
| Water Outlet Bolt (8.1 L) | 30 N.m | 22 lb ft |
| Water Outlet Stud (4.3L) | 25 N.m | 18 lb ft |
| Water Outlet Tube to Thermostat Housing Bolt (6.6L) | 21 N.m | 16 lb ft |
| Water Outlet Tube to Valve Rocker Arm Cover Bolt (6.6L) | 21 N.m | 16 lb ft |
| Water Pump Bolt (4.3L) | 45 N.m | 33 lb ft |
| Water Pump Bolt (First Pass) (4.8L, 5.3L, and 6.0L) | 15 N.m | 11 lb ft |
| Water Pump Bolt (Final Pass) (4.8L, 5.3L, and 6.0L) | 30 N.m | 22 lb ft |
| Water Pump Bolt (6.6L) | 21 N.m | 16 lb ft |
| Water Pump Bolt (8.1L) | 50 N.m | 37 lb ft |
| Water Pump to Water Pump Housing Bolt (6.6L) | 21 N.m | 16 lb ft |
| Water Pump to Water Pump Outlet Pipe Nuts (6.6L) | 21 N.m | 16 lb ft |
| Wiring Harness Bracket to Thermost Housing Bolt (6.6L) | 8 N.m | 71 lb in |