Common Specs & Procedures Index

SIERRA & SILVERADO COMMON SPECS & PROCEDURES

System			Specification/Procedure
Air Conditioning
Service			Approximate Fluid Capacities
Torque			Automatic/manual System Fastener Specifications
Axle Nut/Hub Nut
Front Wheel Drive Shaft to Front Hub Nut (NEW)			188 lb ft (255 N.m)
Battery			Battery Description and Operation
Brakes
Bleeding Sequence			RR, LR, RF, LF. See Hydraulic Brake System Bleeding (Manual) Hydraulic Brake System Bleeding (Pressure)
Disc Brakes
	Service Specifications		Disc Brake Component Specifications
	Torque		Fastener Specifications
Charging
Generator			Charging System Description and Operation
Torque			Except HP5 Fastener Specifications
Drive Belts
Adjustment			Serpentine Drive Belt Is Not Adjustable.
Drive Belt Routing
	6.0L		See illustration under Drive Belt Replacement - Accessory
	6.6L		See illustration under Drive Belt Replacement (Dual Generators) Drive Belt Replacement (Single Generator)
Engine Cooling
General Service Specifications			Approximate Fluid Capacities
	Radiator Cap Pressure		Pressure Specification is Stamped on Radiator Cap
	Thermostat R & I
	6.0L		Engine Coolant Thermostat Housing Replacement (L96, LC8)
	6.6L		Engine Coolant Thermostat Housing Replacement (L5P)
	Water Pump R & I
	6.0L		Water Pump Replacement (L96, LC8)
	6.6L		Water Pump Replacement (L5P)
Engine Mechanical
6.0L
	Compression		The minimum compression in any one cylinder should not be less than 70 percent of the highest cylinder. No cylinder should read less than 690 kpa (100 psi). See Engine Compression Test .
	152 kPa at 1, 000 engine RPM 207 kPa at 2, 000 engine RPM 228 kPa at 3, 000 engine RPM		22 psig at 1, 000 engine RPM 30 psig at 2, 000 engine RPM 33 psig at 3, 000 engine RPM
	Overhaul		6.0L Engine Mechanical Specifications (L96 VIN G) or Engine Mechanical Specifications (LC8 VIN B)
	Torque		Fastener Specifications
6.6L
	Compression		The minimum compression in any one cylinder is 2069 kPa (300 psi). There should not be more than 345 kPa (50 psi) difference between a suspect cylinder and the average compression of all 8 cylinders. See Engine Compression Test (6.6L) L5P .
	152 kPa at 1, 000 engine RPM 207 kPa at 2, 000 engine RPM 228 kPa at 3, 000 engine RPM		22 psig at 1, 000 engine RPM 30 psig at 2, 000 engine RPM 33 psig at 3, 000 engine RPM
	Overhaul		6.6L Engine Mechanical Specifications (6.6L) L5P ,
	Torque		Fastener Specifications
Fluid Specifications			See FLUIDS under MAINTENANCE/FLUIDS tab. From within Manager or Service Writer, click the "30/60/90 Interval" or "Maint." button.
Flywheel/Flex Plate/Drive Plate Torque
	6.0L		Step 1 = 15 ft lb (20 N.m) Step 2 = 37 ft lb (50 N.m) Step 3 = 74 ft lb (100 N.m)
	6.6L		Step 1 = 59 ft lb (80 N.m) Step 2 = 60 Degrees Step 3 = 60 Degrees
Fuel System
Pressure Specification key ON engine OFF read on scan tool
	6.0L (L96)(LC8)		345-414 kPa (50-60 psi) CNG fuel pressure is between 758 - 1, 034 kPa (110 - 150 psi)
		6.6L (L5P) 450-550 kPa (65-80 psi)
	Fuel Pressure Test Procedure
	6.0L		CIRCUIT/SYSTEM VERIFICATION (LC8) CIRCUIT/SYSTEM VERIFICATION (L96)
	6.6L		CIRCUIT/SYSTEM DESCRIPTION (L5P
	Fuel Filter Location
	6.0L		The fuel filter is contained in the fuel tank fuel pump module assembly inside the fuel tank.
	6.6L		The fuel filter is contained in the Fuel Conditioning Module.
	Fuel Filter R & I
	6.0L		The fuel filter is contained in the fuel tank fuel pump module assembly inside the fuel tank. There is no service interval for fuel filter replacement.
	6.6L		Fuel Tank Fuel Pump Module Replacement (15 Ext/Crew Cab With 26 Gal Tank) , orFuel Tank Fuel Pump Module Replacement (15 Reg Cab With 26 Gal Tank) , or Fuel Tank Fuel Pump Module Replacement (15 Reg/Ext/Crew Cab w/34 Gal Tank) , or Fuel Tank Fuel Pump Module Replacement (25/35 Series) , or The following for 6.6LFuel Tank Fuel Pump Module Replacement (Single Cab) , or Fuel Tank Fuel Pump Module Replacement (Crew Cab/Double Cab) , or Fuel Tank Fuel Pump Module Replacement (Chassis Cab Front) , or Fuel Tank Fuel Pump Module Replacement (Chassis Cab Auxiliary) , or Fuel Pump Power Control Module Replacement , , , or
Ignition
Firing Order & Cylinder Identification			See FIRING ORDER & CYLINDER IDENTIFICATION
Ignition Wires (Resistance)			6.0L = 170 - 220 Ω per 25.4 mm (1.0 in) 6.6L = 170 - 220 Ω per 25.4 mm (1.0 in)
Ignition Wires (Routing)
	6.0L		Spark plug wires route directly from coil to spark plug. See Spark Plug Wire Replacement , or Ignition Coil Replacement
Spark Plug
6.0L (Type = Refer to Parts Catalogue)
	Gap		0.95 - 1.10 mm (0.037 - 0.043 in)
	Torque		15 N.m (11 lb ft)
6.6L (Type = Refer to Parts Catalogue)
	Gap		Pregapped not speficied/ not reccomended to alter
	Torque		17 N.m (13 lb ft)
Starting
Starter			Starting System Description and Operation
Torque			Fastener Specifications
Wheel Alignment
	Adjustment Specifications		Specifications
	Torque		Fastener Specifications
Wheel & Tire
Wheel Lug Nut Torque			190 N.m (140 lb ft) For wheel nut tightening sequence, see appropriate illustration under Installation Procedure (6 Lug) , Installation Procedure (8 Lug) , or Installation Procedure (Dual Rear Wheels) .