Specifications Index
SIERRA & SILVERADO SPECIFICATIONS INDEX
| System | Specification/Procedure | ||
|---|---|---|---|
| Air Conditioning | |||
| Service | REFRIGERANT SYSTEM CAPACITIES | ||
| Torque | Automatic System FASTENER TIGHTENING SPECIFICATIONS Manual System FASTENER TIGHTENING SPECIFICATIONS |
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| Battery | BATTERY USAGE (NON HP2) BATTERY USAGE (HP2) |
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| Brakes | |||
| Bleeding Sequence | HYDRAULIC BRAKE SYSTEM BLEEDING (MANUAL) | ||
| Disc Brakes | DISC BRAKE COMPONENT SPECIFICATIONS FASTENER TIGHTENING SPECIFICATIONS |
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| Drum Brakes | DRUM BRAKE COMPONENT SPECIFICATIONS | ||
| Torque | FASTENER TIGHTENING SPECIFICATIONS | ||
| Charging | |||
| Generator | GENERATOR USAGE | ||
| Torque | FASTENER TIGHTENING SPECIFICATIONS | ||
| Drive Belts | |||
| Adjustment | Serpentine Drive Belts Are Self-Adjusting | ||
| Belt Routing | 4.3L See illustration under DRIVE BELT REPLACEMENT 4.8L, 5.3L & 6.0L See illustration under DRIVE BELT REPLACEMENT - ACCESSORY (4.8L, 5.3L, AND 6.0L ENGINES) , DRIVE BELT REPLACEMENT - ACCESSORY (5.3L ENGINE W/RPO HP2) and DRIVE BELT REPLACEMENT - AIR CONDITIONING 6.6L See illustration under DRIVE BELT REPLACEMENT 8.1L See illustration under DRIVE BELT REPLACEMENT - ACCESSORY and DRIVE BELT REPLACEMENT - AIR CONDITIONING |
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| Engine Cooling | |||
| General Service Specifications | NA | ||
| Radiator Cap Pressure | Pressure specification is stamped on cap | ||
| Thermostat R & I | |||
| 4.3L | THERMOSTAT REPLACEMENT (4.3L ENGINE) | ||
| 4.8L, 5.3L & 6.0L | THERMOSTAT HOUSING REPLACEMENT (4.8L, 5.3L, AND 6.0L ENGINES) | ||
| 6.6L | THERMOSTAT REPLACEMENT (6.6L (LLY) ENGINE) | ||
| 8.1L | THERMOSTAT REPLACEMENT (8.1L ENGINE) | ||
| Water Pump R & I | |||
| 4.3L | WATER PUMP REPLACEMENT (4.3L) | ||
| 4.8L, 5.3L & 6.0L | WATER PUMP REPLACEMENT (4.8L, 5.3L, AND 6.0L) | ||
| 6.6L | WATER PUMP REPLACEMENT (6.6L (LLY)) | ||
| 8.1L | WATER PUMP REPLACEMENT (8.1L) | ||
| Engine Mechanical | |||
| 4.3L | |||
| Compression | No cylinder should read less than 100 psi (690 kpa) No cylinder should be less than 70 percent of the highest cylinder See ENGINE COMPRESSION TEST |
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| Oil Pressure - Hot | Oil Pressure - at 1,000 RPM 6 psi (42 kPa) Oil Pressure - at 2,000 RPM 18 psi (125 kPa) Oil Pressure - at 4,000 RPM 24 psi (166 kPa) |
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| Overhaul | ENGINE MECHANICAL SPECIFICATIONS | ||
| Torque | FASTENER TIGHTENING SPECIFICATIONS | ||
| 4.8L, 5.3L & 6.0L | |||
| Compression | No cylinder should read less than 100 psi (690 kpa) No cylinder should be less than 70 percent of the highest cylinder See ENGINE COMPRESSION TEST |
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| Oil Pressure - Hot | 6 psig (41 kPa) at 1,000 engine RPM 18 psig (124 kPa) at 2,000 engine RPM 24 psig (165 kPa) at 4,000 engine RPM |
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| Overhaul | ENGINE MECHANICAL SPECIFICATIONS | ||
| Torque | FASTENER TIGHTENING SPECIFICATIONS | ||
| 6.6L | |||
| Compression | Minimum compression in any one cylinder is 300 psi (2069 kPa) There should not be more than 50 psi (345 kPa) difference between a suspect cylinder and the average compression See ENGINE COMPRESSION TEST |
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| Oil Pressure | Oil Pressure - Minimum- Hot - at idle 14 psi (98 kPa) Oil Pressure - Minimum - 1800 RPM 42 psi (294 kPa) |
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| Overhaul | ENGINE MECHANICAL SPECIFICATIONS | ||
| Torque | FASTENER TIGHTENING SPECIFICATIONS | ||
| 8.1L | |||
| Compression | No cylinder should read less than 100 psi (690 kpa) No cylinder should be less than 70 percent of the highest cylinder ENGINE COMPRESSION TEST |
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| Oil pressure | Oil Pressure - Minimum @ 1000 RPM 5 (34 kPa) Oil Pressure - Minimum @ 2000 RPM 10 psi (69 kPa) |
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| Overhaul | ENGINE MECHANICAL SPECIFICATIONS | ||
| Torque | FASTENER TIGHTENING SPECIFICATIONS | ||
| Fluid Specifications | See FLUIDS under MAINTENANCE tab. From within Manager or Service Writer, click the "30/60/90 Interval" or "Maint." button. | ||
| Flywheel/Flex Plate/Drive PlateTorque | |||
| 4.3L | 74 ft. lbs. (100 N.m) | ||
| 4.8L, 5.3L & 6.0L | |||
| First Step | 15 ft. lbs. (20 N.m) | ||
| Second Step | 37 ft. lbs. (50 N.m) | ||
| Final Step | 74 ft. lbs. (100 N.m) | ||
| 6.6L | |||
| First Step | 58 ft. lbs. (79 N.m) | ||
| Second Step | + an additional 60 degrees | ||
| Final Step | + an additional 60 degrees | ||
| 8.1L | |||
| First Step | 30 ft. lbs. (40 N.m) | ||
| Second Step | 59 ft. lbs. (80 N.m) | ||
| Final Step | 74 ft. lbs. (100 N.m) | ||
| Fuel System | |||
| Pressure Specification | |||
| 4.3L, 4.8L, 5.3L & 6.0L | 55-62 psi (379-427 kPa) | ||
| 6.6L | See FUEL SYSTEM DIAGNOSIS | ||
| 8.1L | 56-62 psi (384-425 kPa) | ||
| Fuel Pressure Test Procedure | |||
| 4.3L | See Fuel Pressure Gage Installation and Removal and FUEL SYSTEM DIAGNOSIS | ||
| 4.8L, 5.3L & 6.0L | See Fuel Pressure Gage Installation and Removal and FUEL SYSTEM DIAGNOSIS | ||
| 6.6L | See FUEL SYSTEM DIAGNOSIS | ||
| 8.1L | See FUEL PRESSURE GAGE INSTALLATION AND REMOVAL and FUEL SYSTEM DIAGNOSIS | ||
| Fuel Filter Location | |||
| 4.3L | The fuel filter is contained in the fuel sender assembly inside the fuel tank | ||
| 4.8L, 5.3L & 6.0L | Sierra & Silverado The fuel filter is contained in the fuel sender assembly inside the fuel tank Cab & Chassis The in-line fuel filter is located on the fuel feed pipe, between the fuel pump and the fuel injectors. |
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| 6.6L | The fuel filter is located on the rocker cover | ||
| 8.1L | The fuel filter is contained in the fuel sender assembly inside the fuel tank | ||
| Fuel Filter R & I | |||
| 4.3L | FUEL SENDER ASSEMBLY REPLACEMENT | ||
| 4.8L, 5.3L & 6.0L | For fuel strainer, See FUEL SENDER ASSEMBLY REPLACEMENT (4.8L, 5.3L, AND 6.0L ENGINES)
or FUEL SENDER ASSEMBLY REPLACEMENT (5.3L (L59) ENGINE) For Cab & Chassis, no procedure or illustration is given for in-line filter located in fuel feed pipe. |
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| 6.6L | FUEL FILTER REPLACEMENT You must reset the fuel filter life monitor using scan tool after each fuel filter change or ECM replacement. |
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| 8.1L | FUEL SENDER ASSEMBLY REPLACEMENT | ||
| Ignition | |||
| Firing Order & Cylinder Identification | |||
| 4.3L | FIRING ORDER & CYLINDER IDENTIFICATION | ||
| 4.8L, 5.3L & 6.0L | FIRING ORDER & CYLINDER IDENTIFICATION | ||
| 6.6L | FIRING ORDER & CYLINDER IDENTIFICATION | ||
| 8.1L | FIRING ORDER & CYLINDER IDENTIFICATION | ||
| Ignition Wires (Resistance) | 4.3L & 8.1L 1,000 ohms per ft 4.8L, 5.3L & 6.0L 397-1,337 ohms |
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| Ignition Wires (Routing) | |||
| 4.3L | NA | ||
| 4.8L, 5.3L & 6.0L | Spark plug wires route directly down from each coil | ||
| 8.1L | Spark plug wires route directly down from each coil | ||
| Spark Plug | |||
| 4.3L (R41-932 [AC plug type]) | |||
| Gap | 0.060 in (1.52 mm) | ||
| Torque | 11 lb ft (15 N.m) | ||
| 4.8L, 5.3L & 6.0L (GM P/N 12571164 or AC Spark Plug P/N 41-985) | |||
| Gap | 0.040 in (1.01 mm) | ||
| Torque | 11 lb ft (15 N.m) | ||
| 8.1L (Type Motorcraft AWSF-32PA/AWSF-32PG or AGSF-32PP) | |||
| Gap | 0.060 in (1.52 mm) | ||
| Torque | 15 lb ft (20 N.m) | ||
| Starting | |||
| Starter | NA | ||
| Torque | FASTENER TIGHTENING SPECIFICATIONS | ||
| Wheel Alignment | |||
| Adjustment Specifications | WHEEL ALIGNMENT SPECIFICATIONS | ||
| Torque | FASTENER TIGHTENING SPECIFICATIONS | ||
| Wheel & Tire | |||
| Wheel Lug Nut Torque | 140 ft. lbs. (190 N.m) | ||