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Manual Coverage
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Systems Covered
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Engine:
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Full coverage: diagnosis, repair, overhaul, troubleshooting, performance tuning
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Transmission:
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All automatic and manual transmissions: overhaul, repair, diagnosis, fluid specifications
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Drivetrain:
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Front-wheel drive, rear-wheel drive, four-wheel drive systems, differentials, axles, driveshafts
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Brakes:
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Hydraulic, ABS, EBD, traction control systems: diagnosis, repair, component replacement, bleeding procedures
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Steering:
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Power steering, steering column, steering gear/rack: diagnosis, repair, alignment specifications
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Suspension:
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Front and rear suspension components, shock absorbers, struts, springs, bushings, alignment specifications
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Electrical System:
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Battery, charging system, ignition, lighting, power windows, locks, mirrors, sensors, fuses, relays, wiring diagrams
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HVAC:
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Air conditioning, heating, ventilation system: diagnosis, repair, refrigerant charging, component replacement
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Body And Interior:
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Body panels, doors, windows, seats, trim, sound system, airbags, interior components
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Chassis And Frame:
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Frame inspection, repair, corrosion protection
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Fuel System:
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Fuel tank, pump, injectors, lines, evaporative emissions control
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Exhaust System:
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Catalytic converter, mufflers, pipes, sensors
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Cooling System:
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Radiator, water pump, thermostat, hoses, coolant specifications
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Safety Systems:
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Airbag system diagnosis and repair, seatbelt mechanisms
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Diagnostic Tools:
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OBD-II diagnostics, specific tool requirements
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Procedures Included
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Maintenance:
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Oil changes, filter replacements, spark plugs, tire rotations, fluid checks, belt replacements, brake pad replacement
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Repair:
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Engine component repair, transmission rebuild, brake caliper replacement, suspension component replacement, electrical diagnostics and repair
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Troubleshooting:
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Step-by-step diagnostic procedures for common and uncommon issues, symptom-based troubleshooting charts
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Overhaul:
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Complete engine and transmission overhaul procedures with detailed sub-assembly instructions
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Calibration:
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Wheel alignment, sensor calibration (e.g., ABS sensors, steering angle sensor)
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Disassembly And Assembly:
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Detailed instructions for disassembling and reassembling all major vehicle components and systems
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Wiring Diagrams:
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Comprehensive and detailed wiring schematics for all electrical systems
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Torque Specifications:
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Exact torque values for all critical fasteners
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Special Tools:
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Identification and usage of specialized tools required for specific repairs
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Technical Depth
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Depth:
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Complete A-Z coverage, suitable for dealership technicians and advanced DIYers
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Engine Specifications
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Primary Engine
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Engine Options:
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4.8L V8 (L20), 5.3L V8 (LMF/LMG), 6.0L V8 (L96/LMF/LY6), 6.2L V8 (L94)
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Engine Type:
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Vortec V8 gasoline engines, some with FlexFuel capability
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Performance
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4.8L V8 Horsepower:
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Approx. 302 hp @ 5600 rpm
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4.8L V8 Torque:
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Approx. 305 lb-ft @ 4600 rpm
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5.3L V8 Horsepower:
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Approx. 315-326 hp @ 5200-5600 rpm
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5.3L V8 Torque:
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Approx. 335-348 lb-ft @ 4000-4400 rpm
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6.0L V8 Horsepower:
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Approx. 360-366 hp @ 5400-5600 rpm
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6.0L V8 Torque:
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Approx. 380-383 lb-ft @ 4200-4400 rpm
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6.2L V8 Horsepower:
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Approx. 403 hp @ 5700 rpm
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6.2L V8 Torque:
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Approx. 417 lb-ft @ 4300 rpm
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Fuel System
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Fuel Delivery:
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Sequential Fuel Injection (SFI)
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Fuel Type:
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Unleaded Gasoline (FlexFuel variants compatible with E85)
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Emission Controls:
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Catalytic converter, O2 sensors, EVAP system
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Dimensions
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Exterior
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Body Styles:
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Regular Cab, Extended Cab, Crew Cab
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Bed Lengths:
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Short Bed (approx. 5'8"), Standard Bed (approx. 6'6"), Long Bed (approx. 8'0")
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Wheelbase Range:
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143.5 inches to 167.7 inches (depending on cab and bed configuration)
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Weights
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Curb Weight Range:
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Approx. 4,500 lbs to 5,800 lbs (depending on configuration)
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Gross Vehicle Weight Rating Gvwr:
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Ranges from 7,000 lbs to 10,000+ lbs depending on configuration (e.g., 1500, 2500, 3500 series)
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Max Towing Capacity:
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Up to 10,700 lbs (properly equipped 2500/3500 models)
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Max Payload Capacity:
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Up to 3,960 lbs (properly equipped 3500 models)
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Maintenance
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Service Intervals
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Oil Change Interval:
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Typically every 5,000-7,500 miles or 6 months, depending on driving conditions (refer to manual for specific recommendations based on oil type and usage).
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Engine Air Filter Replacement:
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Approximately every 30,000-45,000 miles, or as needed based on inspection.
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Spark Plug Replacement:
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Varies by engine type, typically 60,000-100,000 miles for iridium-tipped plugs.
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Transmission Fluid Change:
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Every 45,000-60,000 miles for heavy-duty use, or 100,000+ miles for normal use (refer to manual). Filter replacement recommended during fluid changes.
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Coolant Flush And Replacement:
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Approximately every 50,000-100,000 miles or 5 years, depending on coolant type.
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Fluid Specifications
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Engine Oil Spec:
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SAE 5W-30, meeting GM spec GM6094M (or Dexos1 for newer specs if applicable, though typically not for 2012). Verify with manual.
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Coolant Spec:
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GM P/N 12346131 or 1052855 (Orange coolant), or equivalent Dex-Cool compatible coolant.
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Brake Fluid Spec:
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DOT 3 or DOT 4
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Power Steering Fluid Spec:
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Dexron III/VI compatible fluid
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Known Issues
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Common Wear Items:
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Brake pads/rotors, ball joints, tie rod ends, sway bar links, front wheel bearings.
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Engine Concern:
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AFM (Active Fuel Management) system lifter issues can occur on 5.3L engines, leading to misfires or ticking noises.
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Transmission Concern:
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Occasional issues with transmission solenoids or torque converter clutch on higher mileage units.
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Electrical Concern:
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Dashboard illumination issues, HVAC blower motor resistor failures, and power window regulator failures can be reported.
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