Engine:
Detailed diagnostic, repair, and overhaul procedures for all gasoline engines including 4.8L V8, 5.3L V8, 6.0L V8, and 6.2L V8. May include diesel information for specific HD models if applicable to the specific year range covered.
Transmission:
Repair and overhaul of automatic transmissions: 4L60-E, 4L70-E, 4L80-E, 4L85-E, and 6L80/6L90 (depending on model year specifics).
Drivetrain:
Front and rear axle assemblies, differentials (open, limited-slip), CV joints, driveshafts, transfer case (4WD systems).
Suspension:
Front independent suspension (torsion bar or coil spring configurations depending on model), rear solid axle leaf spring suspension, shock absorbers, control arms, ball joints, steering knuckles.
Steering:
Power steering system, steering gear, steering column, tie rods, power steering pump and cooler.
Brakes:
Front and rear disc brake systems, ABS (Anti-lock Braking System), brake calipers, rotors, pads, hydraulic system, parking brake.
Electrical System:
Battery, charging system (alternator), starting system (starter), ignition system, lighting (headlights, taillights, interior), fuses, relays, wiring diagrams.
Body:
Body panels, doors, hood, tailgate, bumpers, glass, interior trim, HVAC system, seats, exterior trim.
HVAC:
Heating, Ventilation, and Air Conditioning system: compressor, condenser, evaporator, blower motor, controls, refrigerant handling.
Fuel System:
Fuel tank, fuel pump, fuel injectors, fuel filter, fuel lines, evaporative emission control (EVAP) system.
Emissions Control:
Exhaust system, catalytic converter, oxygen sensors, EGR system, PCV system.
Safety Systems:
Airbag system, seat belt pre-tensioners, SRS (Supplemental Restraint System) components and diagnostics.
Maintenance:
Oil change, filter replacement, tire rotation, fluid checks and changes, spark plug replacement, belt replacement, brake pad replacement.
Troubleshooting:
Extensive diagnostic procedures for various systems, fault code interpretation, symptom-based troubleshooting guides.
Repair:
Detailed step-by-step repair instructions for virtually all mechanical and electrical components.
Overhaul:
Complete engine and transmission rebuild procedures with specifications and torque values.
Diagnostics:
Includes procedures for using diagnostic scan tools (e.g., GM Tech 2 or equivalent) and interpreting data.
Wiring Diagrams:
Comprehensive electrical wiring diagrams for all major systems.
Torque Specifications:
Detailed torque specifications for all critical fasteners.
Component Replacement:
Instructions for replacing individual components such as alternators, starters, fuel pumps, sensors, etc.
Depth:
Expert Level: Covers everything from basic maintenance and diagnostics to complete engine and transmission overhauls and complex electrical system repairs.
Diagnostic Codes:
Includes common DTCs (Diagnostic Trouble Codes) and their associated troubleshooting steps.
Specifications:
Provides essential specifications for all components, including clearances, tolerances, fluid capacities, and pressures.
Engine Options 2007-2012:
4.8L Vortec V8 (LY2), 5.3L Vortec V8 (LH9, LH7, LY5, LH6), 6.0L Vortec V8 (L76, L96), 6.2L Vortec V8 (L92, L9H). Diesel options may include 6.6L Duramax for HD models (RPO LMM).
Horsepower Range:
Approx. 270 hp (4.8L) to 403 hp (6.2L, depending on specific application and year).
Torque Range:
Approx. 300 lb-ft (4.8L) to 417 lb-ft (6.2L, depending on specific application and year).
Injection Type:
Sequential Port Fuel Injection (MPI).
Fuel Type:
Unleaded gasoline (typically 87 octane minimum for most engines, higher for performance variants).
Oil Change Interval:
Typically 7,500 miles or 6 months, with oil life monitoring system often recommending changes based on driving conditions. Consult manual for exact interval.
Transmission Fluid Change:
Generally recommended around 100,000 miles under normal driving conditions, or sooner under severe use (towing, frequent short trips). Specific fluid type and procedure critical.
Engine Oil Specification:
API SN, SAE 5W-30 Dexos1 (or equivalent manufacturer specification for gasoline engines). For Duramax diesel: API CJ-4, SAE 15W-40 or 5W-40.
Coolant Specification:
GM Vehicle Coolant (GMC Yellow) or equivalent; a 50/50 mixture of DEX-COOL antifreeze and distilled water.
Brake Fluid Specification:
DOT 3 or DOT 4 approved brake fluid.
Transmission Fluid Specification:
Dexron VI for 6-speed automatics; Dexron III or equivalent for 4-speed automatics. Consult manual for specific transmission.
Common Wear Items:
Front suspension components (ball joints, tie rods), fuel pumps, catalytic converters (can be costly), exhaust manifold leaks on some V8 engines.
Transmission Notes:
Some 4L60/4L70 transmissions may require rebuilds due to wear on clutch packs or torque converters, especially under heavy towing use. 6-speed transmissions generally more robust.
