Vehicle Segment:
Heavy-duty pickup truck, designed for towing, hauling, and demanding work applications
Key Competitors:
Ford Super Duty F-250/F-350, Ram 2500/3500 Heavy Duty
Manual Advantage:
Comprehensive, factory-level information for DIY repairs and professional service
Value Proposition:
Cost-effective alternative to dealership service, empowering owners with repair knowledge
Engine:
Detailed diagnostics, repair procedures, component testing for all gasoline and diesel engines
Transmission:
Covers automatic and manual transmissions, including overhaul, diagnostics, and fluid specifications
Drivetrain:
Front and rear axle systems, differential, transfer case, driveshafts, and CV joints
Suspension:
Front and rear suspension components, steering linkage, shock absorbers, springs, and alignment procedures
Brakes:
Hydraulic brake system, ABS, EBD, brake pad and rotor replacement, caliper service, and bleeding procedures
Electrical:
Complete wiring diagrams, fuse box locations, component testing, starter, alternator, battery, lighting, and accessory circuits
HVAC:
Heating, ventilation, and air conditioning system diagnosis, refrigerant handling, component replacement, and performance testing
Body:
Body panel removal and installation, door mechanisms, interior trim, glass, bumpers, and collision repair basics
Diagnostics:
Troubleshooting guides, diagnostic trouble codes (DTCs), OBD-II procedures, and diagnostic flowcharts
Maintenance:
Scheduled maintenance intervals, fluid changes (oil, coolant, transmission fluid, brake fluid), filter replacements, and inspections
Repair:
Step-by-step instructions for component replacement, rebuilds, and system repairs
Troubleshooting:
Diagnostic charts and procedures for identifying and resolving common and complex vehicle issues
Specifications:
Torque specifications for all fasteners, fluid capacities, and critical measurement data
Wiring Diagrams:
Comprehensive, clearly labeled electrical wiring diagrams for all vehicle systems
Depth Level:
Professional-level, covering basic maintenance to complex engine and transmission overhauls
Illustrations:
Hundreds of detailed photos and exploded diagrams for visual guidance
Engine Code 1:
Vortec 6.0L V8 (L76/L96)
Displacement 1:
6.0 Liters (364 cu. in.)
Horsepower 1:
Approximately 350-360 hp (varies slightly by model year and configuration)
Torque 1:
Approximately 370-380 lb-ft (varies slightly by model year and configuration)
Engine Code 2:
Duramax 6.6L V8 Turbo-Diesel (LLY/LBZ/LMM)
Displacement 2:
6.6 Liters (403 cu. in.)
Horsepower 2:
Approximately 300-365 hp (varies by specific engine variant LLY/LBZ/LMM)
Torque 2:
Approximately 520-765 lb-ft (varies by specific engine variant LLY/LBZ/LMM)
Fuel Delivery Gas:
Multi-port Fuel Injection (MPI)
Fuel Delivery Diesel:
Common Rail Direct Injection (CRDI) with Turbocharger and Intercooler
Emission Controls:
Catalytic converter (gas), Diesel Particulate Filter (DPF) and Exhaust Gas Recirculation (EGR) (diesel)
Wheelbase Options:
Multiple wheelbase options (e.g., ~143.5" for 8' bed, ~167.5" for 6.5' bed Crew Cab)
Bed Length Options:
Standard Box (6.5 ft), Long Box (8 ft)
Gcwr Diesel:
Up to 23,000 lbs (Gross Combined Weight Rating for diesel models)
Payload Capacity:
Varies significantly by configuration, but generally robust for HD trucks
Towing Capacity:
Up to ~12,000-16,000 lbs (conventional hitch) and higher with gooseneck/5th wheel, depending on configuration
NHTSA Ratings:
Generally good for its class, but specific ratings for these model years should be verified via NHTSA
Traction Control:
StabiliTrak Electronic Stability Control system
ABS:
Anti-lock Braking System (ABS)
Airbags:
Front airbags for driver and passenger, available side curtain airbags
Audio Options:
Factory AM/FM stereo with CD player, optional premium audio systems, and auxiliary input jacks.
Navigation:
Optional factory navigation system available on higher trim levels.
Parking Assist:
Available rear parking assist sensors on some models.
Towing Features:
Integrated trailer brake controller (optional or standard on higher trims), trailer sway control.
Oil Change Interval Gas:
Typically every 3,000-5,000 miles or 3-6 months for gasoline engines, depending on usage.
Oil Change Interval Diesel:
Typically every 5,000-7,500 miles or 6 months for Duramax diesel, with more frequent changes recommended under severe use.
Transmission Fluid Interval:
Check manual for specific intervals, often around 45,000-100,000 miles depending on load and usage.
Coolant Interval:
Initial change often at 100,000 miles, then every 50,000 miles thereafter for Dex-Cool coolant.
Engine Oil Gas:
SAE 5W-30 Synthetic (API SM or higher), confirm with manual for specific viscosity and API rating.
Engine Oil Diesel:
SAE 15W-40 or 5W-40 Synthetic Heavy Duty Diesel Engine Oil (API CJ-4 or CI-4 PLUS), consult manual for exact specification.
Transmission Fluid Auto:
Dexron VI (for 6-speed automatic transmissions)
Coolant:
GM Approved Extended Life Coolant (Dex-Cool), typically orange
Duramax Dpf Egr:
DPF and EGR system issues can arise on diesel models, especially with short-trip usage or improper maintenance.
Transmission Longevity:
Proper fluid maintenance is critical for the longevity of the heavy-duty Allison transmissions.
Suspension Wear:
Heavy-duty use can lead to wear on ball joints, tie rod ends, and shocks over time.
Gmc Legacy:
GMC (General Motors Company) has a long history of producing trucks and commercial vehicles, known for their robustness and capability.
Platform:
These model years belong to the GMT900 platform (specifically, the HD variants share architecture with the Silverado HD).
Design Changes:
Part of a generation that saw significant updates in styling, interior, and powertrain options compared to previous generations.
