2008 GMC Sierra 1500 Service & Repair Manual

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado SPECIFICATIONS FASTENER TIGHTENING SPECIFICATIONS Application Specification Metric English A/C Compressor Bolt 50 N.m 37 lb ft Air Cleaner Outlet Duct Clamp 8 N.m 71 lb in Air Conditioning Compressor/Power Steering Pump Bracket Bolt 46 N.m 34 lb ft Air Inlet Tube Nut 25 N.m 18 lb ft Battery Cable Bracket Bolt 12 N.m 106 lb in Battery Cable Bracket Nut 8 N.m 71 lb in Bypass Pipe Bolt 25 N.m 18 lb ft Camshaft Gear Bolt 234 N.m 173 lb ft Camshaft Position Sensor Bolt 10 N.m 89 lb in Camshaft Position Sensor Exciter Ring Bolt 9 N.m 80 lb in Camshaft Thrust Plate Bolt 22 N.m 16 lb ft Charged Air Cooler Bolt 21 N.m 15 lb ft Charged Air Cooler Clamp 8 N.m 71 lb in Connecting Rod Cap Bolt - Angular Tightening Method 1st Step 64 N.m 1st Step 47 lb ft 2nd Step 30 degrees 2nd Step 30 degrees 3rd Step 30 degrees 3rd Step 30 degrees Coolant Pipe Bolt and Nut 25 N.m 18 lb ft Coolant Tube to Water Pump Nut 25 N.m 18 lb ft Cooling Fan Pulley 41 N.m 30 lb ft Crankshaft Balancer Bolt 1st Step 100 N.m 1st Step 74 lb ft 2nd Step 105 degrees 2nd Step 105 degrees 1st Step 98 N.m 1st Step 72 lb ft 2nd Step 132 N.m 2nd Step 97 lb ft 2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado 2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Crankshaft Bearing Cap Bolt 3rd Step 30 degrees 3rd Step 30 degrees Crankshaft Bearing Cap Bolt - Angular Tightening Method 1st Step 100 N.m 1st Step 74 lb ft 2nd Step 90 degrees 2nd Step 90 degrees Crankshaft Bearing Cap Side Bolt 70 N.m 52 lb ft Crankshaft Position Sensor Bolt 10 N.m 89 lb in Crankshaft Position Sensor Spacer Bolt 10 N.m 89 lb in Crossmember Bolt 100 N.m 74 lb ft Cylinder Head M12 Bolt - Angular Tightening Method 1st Step 50 N.m 1st Step 37 lb ft 2nd Step 80 N.m 2nd Step 59 lb ft 3rd Step 60 degrees 4th Step 60 degrees Cylinder Head M8 Bolt 25 N.m 18 lb ft Drive Belt Tensioner Pulley Bolt 50 N.m 37 lb ft EGR to EGR Cooler Bolt 25 N.m 18 lb ft EGR Bracket 25 N.m 18 lb ft EGR Bracket Bolt 25 N.m 18 lb ft EGR Bracket to Cooler Bolt 25 N.m 18 lb ft Electrical Harness Bracket Bolt 10 N.m 89 lb in Engine Block Coolant Plug 18 N.m 13 lb ft Engine Block Ground Bolt 34 N.m 25 lb ft Engine Mount Through Bolt to Frame 75 N.m 55 lb ft Engine Mount to Block Bolts 58 N.m 43 lb ft Engine Mount to Frame Bolt 65 N.m 48 lb ft Engine Shield Bolt 20 N.m 15 lb ft Exhaust Heat Shield Nut 10 N.m 89 lb in Exhaust Manifold Bolt/Nut 57 N.m 42 lb ft Exhaust Manifold Heat Shield Bolts 10 N.m 89 lb in Exhaust Outlet Clamp 15 N.m 11 lb ft Exhaust Outlet Heat Shield Bolts 10 N.m 89 lb in Exhaust Pipe Bracket Nut 53 N.m 39 lb ft Exhaust Pipe Clamp 53 N.m 39 lb ft Exhaust Pipe Heat Shield Bolts 10 N.m 89 lb in Exhaust Pipe to EGR Cooler Nuts 26 N.m 19 lb ft 2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fan Pulley Bracket Bolt 50 N.m 37 lb ft Flywheel Bolt - Angular Tightening Method 1st Step 79 N.m 1st Step 58 lb ft 2nd Step 60 degrees 2nd Step 60 degrees 3rd Step 60 degrees 3rd Step 60 degrees Flywheel Housing Bolt 80 N.m 60 lb ft Flywheel Housing to Upper Oil Pan Bolt 50 N.m 37 lb ft Front Engine Cover Bolt 25 N.m 18 lb ft Fuel Filter Bracket Bolt 30 N.m 22 lb ft Fuel Injection Pipe Nut 41 N.m 30 lb ft Fuel Injector Bracket Bolt 30 N.m 22 lb ft Fuel Inlet Pipe Bracket Bolt 21 N.m 15 lb ft Fuel Injection Pump Assembly to Cylinder Block Bolt 25 N.m 18 lb ft Fuel Injection Pump to Bracket Bolt 28 N.m 20 lb ft Fuel Injection Pump Drive Gear Nut 70 N.m 52 lb ft Fuel Line Bracket Nut 21 N.m 15 lb ft Fuel Temperature Sensor 22 N.m 16 lb ft Fuel Pipes Bracket Bolt 25 N.m 18 lb ft Fuel Pressure Relief Valve 100 N.m 74 lb ft Fuel Rail Assembly Bolt 25 N.m 18 lb ft Fuel Rail Balance Pipe Bolt 21 N.m 15 lb ft Generator Bracket Bolt and Nut 50 N.m 37 lb ft Generator Positive Cable Nut 9 N.m 80 lb in Glow Plug 18 N.m 13 lb ft Glow Plug Controller Bolt 10 N.m 89 lb in Glow Plug Harness Bracket Bolt 10 N.m 89 lb in Glow Plug Nut 2 N.m 18 lb in Glow Plug Power Feed Nut 15 N.m 11 lb ft Glow Plug Relay Assembly Bolt 10 N.m 89 lb in Heater Outlet Pipe Bolt 25 N.m 18 lb ft Heater Pipe Bolt 25 N.m 18 lb ft Hood Hinge Bolt 25 N.m 18 lb ft Idle Pulley Bolt 50 N.m 37 lb ft 2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Injector Bracket Bolt 23 N.m 16 lb ft Intake Manifold Bolts/Nuts 25 N.m 18 lb ft Oil Cooler Adapter Bolts 25 N.m 18 lb ft Oil Cooler Adapter Nuts 25 N.m 18 lb ft Oil Cooler Assembly Bolts 25 N.m 18 lb ft Oil Cooler Adapter Stud 10 N.m 89 lb in Oil Drain Plug 84 N.m 62 lb ft Oil Fill Tube Bolt 25 N.m 18 lb ft Oil Filter 24 N.m 18 lb ft Oil Gallery Plugs 53 N.m 39 lb ft Oil Level Indicator Tube Bolt 21 N.m 15 lb ft Oil Level Sensor Bolt 10 N.m 89 lb in Oil Level Sensor Harness Bolt 40 N.m 29 lb ft Oil Pan Bolts/Nuts - Lower 10 N.m 89 lb in Oil Pan Bolt - Upper 20 N.m 15 lb ft Oil Pan Skid Plate Bolt 20 N.m 15 lb ft Oil Pressure Sensor Unit 49 N.m 36 lb ft Oil Pressure Relief Valve 39 N.m 29 lb ft Oil Pump Bolt 21 N.m 15 lb ft Oil Pump Driven Gear Nut 100 N.m 74 lb ft Oil Pump Gear Cover Bolt 21 N.m 15 lb ft Oil Pump Pipe and Screen Assembly Bolts and Nuts 25 N.m 18 lb ft Piston Cooling Nozzle Eye Bolt 21 N.m 15 lb ft Positive Cable Junction Block Bracket to Power Steering Pump Bolt 9 N.m 80 lb in Positive Crankcase Ventilation Cover Screws 4 N.m 35 lb in Positive Crankcase Ventilation Oil Separator Bracket Nut 25 N.m 18 lb ft Power Steering Pump Bracket Bolt 50 N.m 37 lb ft Power Steering Pump Bolt 50 N.m 37 lb ft Rocker Arm Shaft Bracket Bolt 41 N.m 30 lb ft Starter Motor Bolt 78 N.m 58 lb ft Transmission Fill Tube Nut 18 N.m 13 lb ft Thermostat Housing Bolts/Nuts 25 N.m 18 lb ft Thermostat Cover Bolt 25 N.m 18 lb ft 2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

ENGINE MECHANICAL SPECIFICATIONS Torque Converter Bolt 60 N.m 44 lb ft Transmission Oil Cooler Clip Nut 9 N.m 80 lb in Turbocharger Bolt 108 N.m 80 lb ft Turbocharger Coolant Outlet Pipe Bracket Nut 10 N.m 89 lb in Turbocharger Heat Shield Bolts 10 N.m 89 lb in Turbocharger Oil Return Pipe Stud 10 N.m 89 lb in Turbocharger Oil Supply Hose Eye Bolt 26 N.m 19 lb ft Turbocharger Oil Return Pipe Bolts/Nuts 25 N.m 18 lb ft Upper Oil Pan to Flywheel Housing Bolts 20 N.m 15 lb ft Valve Adjusting Nut 22 N.m 16 lb ft Valve Lifter Holdown Bracket Bolt 11 N.m 97 lb in Valve Rocker Arm Cover Bolt - Lower 10 N.m 89 lb in Valve Rocker Arm Cover Bolt - Upper 8 N.m (Two Times) 71 lb in (Two Times) Water Outlet Bolts 25 N.m 18 lb ft Water Pump Bolt 25 N.m 18 lb ft Water Pump Inlet Pipe Bolts 25 N.m 18 lb ft Application Specification Metric English General  Engine Type 90 degree V-8  Displacement 6.6 Liter 402 cu in  RPO LMM  Bore 103 mm 4.0551 in  Stroke 99 mm 3.8976 in  Compression Ratio 16.8:1  Engine Compression Test - Minimum 2069 KPa 300 psi  Idle Speed 680 RPM  Firing Order 1-2-7-8-4-5-6-3 Block 103.11 mm 4.0594 in 2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

2008 GMC Sierra 1500 Service & Repair Manual

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