Manual Coverage
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Systems Covered
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Engine Systems:
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Engine mechanical (cylinder head, block, crankshaft, pistons, connecting rods), lubrication, cooling, fuel injection, ignition, exhaust, emissions control, engine diagnostics
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Transmission Drivetrain Systems:
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Automatic transmission (4L60-E, 4L70-E), transfer case, driveshafts, axles, differentials, CV joints, powertrain control modules (PCM)
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Suspension Steering Systems:
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Front and rear suspension (independent front, coil springs rear), shock absorbers, struts, control arms, ball joints, tie rods, power steering system, steering column
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Brake Systems:
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Front and rear disc brakes, ABS (Anti-lock Braking System), hydraulic system, brake calipers, rotors, pads, parking brake
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Electrical Body Systems:
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Body control module (BCM), lighting, instruments and gauges, power windows, power locks, mirrors, audio system, climate control, interior and exterior lighting, wiring diagrams, fuse box locations, charging system, starting system
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HVAC Systems:
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Heating, ventilation, air conditioning (HVAC) system components, refrigerant handling, diagnostics, and repair.
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Procedures Included
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Maintenance Procedures:
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Oil change, filter replacements (oil, air, fuel), coolant flush and refill, spark plug replacement, brake fluid flush, tire rotation, battery maintenance, wiper blade replacement
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Repair Procedures:
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Engine component repair/replacement, transmission overhaul/replacement, brake caliper/rotor replacement, suspension component replacement, steering component replacement, HVAC system diagnosis/repair, electrical component troubleshooting/replacement, body panel repair
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Diagnostic Procedures:
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OBD-II diagnostic trouble codes (DTCs), symptom-based troubleshooting, diagnostic scan tool usage, component testing procedures
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Wiring Diagrams Coverage:
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Detailed, system-specific wiring schematics for all major electrical components and circuits.
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Torque Specifications:
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Precise torque values for all critical fasteners across all mechanical systems.
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Technical Depth
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Technical Depth:
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Comprehensive, from basic maintenance to complete engine and transmission rebuilds, including detailed diagnostic trees and wiring schematics
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Engine Specifications
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Primary Engine
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Engine Options:
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5.3L V8 Vortec (LH6), 6.0L V8 Vortec (L76, L96), 6.2L V8 Vortec (L92)
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Performance
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5.3L V8 Hp Torque:
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Approx. 315 hp @ 5200 rpm, 335 lb-ft @ 4000 rpm (L76 variant for 2008)
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6.0L V8 Hp Torque:
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Approx. 366 hp @ 5400 rpm, 376 lb-ft @ 4000 rpm (L96 variant for 2008)
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Fuel System
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Fuel System Type:
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Electronic Fuel Injection (EFI)
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Recommended Fuel:
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Regular Unleaded Gasoline (87 octane)
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Engine Codes
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5.3L V8 Lh6 Code:
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LH6 (Active Fuel Management)
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6.0L V8 L76 Code:
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L76 (Active Fuel Management, DoD)
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6.2L V8 L92 Code:
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L92 (No Active Fuel Management, higher performance)
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Maintenance
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Service Intervals
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Oil Change Interval:
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Every 5,000 - 7,500 miles or 6 months, or as indicated by the Oil Life Monitoring System (OLMS)
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Tire Rotation Interval:
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Every 7,500 miles or as needed based on wear
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Spark Plug Replacement Interval V8:
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Approximately 100,000 miles (depending on plug type)
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Fluid Specifications
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Engine Oil Specification:
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SAE 5W-30 Synthetic Blend (Dexos approved for later models, consult manual for specific 2008 specs)
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Engine Oil Capacity:
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Approx. 6.0 quarts (5.7 L) for 5.3L V8, 7.0 quarts (6.6 L) for 6.0L/6.2L V8
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Transmission Fluid Type:
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Dexron-VI Automatic Transmission Fluid (ATF)
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Coolant Type:
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GM P/N 12346290 or equivalent (Orange, long-life)
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Brake Fluid Type:
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DOT 3
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Known Issues
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Common Issues:
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Active Fuel Management (AFM) lifter/camshaft wear, transmission solenoid issues, HVAC blend door actuator failures, interior rattles/squeaks, potential for oil consumption in high-mileage engines.
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