Segment:
        
        
            Heavy-duty, off-road, military-derived civilian vehicle.
        
     
    
        
            Target Audience:
        
        
            Enthusiasts, owners, professional mechanics, off-roaders.
        
     
    
    
        
            Competitors:
        
        
            No direct civilian competitors in its class; perceived as a unique niche vehicle.
        
     
    
    
        
            Vehicle Philosophy:
        
        
            Extreme off-road capability, durability, and go-anywhere performance.
        
     
    
        
            Manual Advantage:
        
        
            Provides professional-level repair and maintenance guidance for a specialized vehicle.
        
     
 
    
    
    
        
            Engine:
        
        
            Detailed diagnosis, repair, and overhaul of all engine components and systems.
        
     
    
        
            Transmission:
        
        
            Complete coverage for transmission repair, diagnostics, and servicing.
        
     
    
        
            Drivetrain:
        
        
            Axles, differentials, transfer case, CV joints, and driveshafts.
        
     
    
        
            Suspension:
        
        
            Independent front and rear suspension systems, including springs, shocks, control arms, and bushings.
        
     
    
        
            Steering:
        
        
            Power steering system, steering column, linkages, and components.
        
     
    
        
            Brakes:
        
        
            Hydraulic brake system, ABS, rotors, calipers, pads, and lines.
        
     
    
        
            Electrical:
        
        
            Complete electrical system, including wiring diagrams, charging system, ignition system, lighting, and accessories.
        
     
    
        
            Fuel System:
        
        
            Fuel injection, fuel pump, injectors, fuel tank, and lines.
        
     
    
        
            Cooling System:
        
        
            Radiator, water pump, thermostat, hoses, and fan assembly.
        
     
    
        
            Exhaust System:
        
        
            Catalytic converter, mufflers, pipes, and hangers.
        
     
    
        
            HVAC:
        
        
            Heating, Ventilation, and Air Conditioning (HVAC) system components and service.
        
     
    
        
            Body:
        
        
            Body panel removal/installation, doors, windows, latches, and trim.
        
     
    
        
            Chassis:
        
        
            Frame, underbody components, and running gear.
        
     
    
    
        
            Maintenance:
        
        
            Scheduled maintenance, fluid changes, filter replacements, lubrication.
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic procedures for identifying and resolving common and complex issues.
        
     
    
        
            Repair:
        
        
            Step-by-step repair instructions for all major vehicle components and systems.
        
     
    
        
            Diagnostics:
        
        
            System-specific diagnostic flowcharts and troubleshooting trees.
        
     
    
        
            Rebuilds:
        
        
            Detailed instructions for engine, transmission, and differential rebuilds.
        
     
    
        
            Component Replacement:
        
        
            Instructions for replacing individual parts and sub-assemblies.
        
     
    
    
        
            Depth:
        
        
            Comprehensive, covering everything from basic fluid checks to complete engine overhauls.
        
     
    
        
            Detail Level:
        
        
            High detail, with step-by-step instructions, exploded diagrams, and photographs.
        
     
 
    
    
    
    
        
            Searchable:
        
        
            Yes (assuming standard PDF capabilities).
        
     
    
    
        
            Printability:
        
        
            Printable (single pages or entire manual).
        
     
    
    
        
            Binding:
        
        
            Digital Download (no physical binding).
        
     
    
    
        
            Paper Type:
        
        
            N/A (Digital format).
        
     
    
    
        
            Usage Rights:
        
        
            Lifetime use, no expiry, no renewal fees, usable on multiple devices.
        
     
    
    
        
            Operating Systems:
        
        
            Compatible with all Windows and MAC computers.
        
     
 
    
    
    
        
            Engine Code:
        
        
            LLY (6.6L Duramax Turbo-Diesel V8)
        
     
    
        
            Displacement:
        
        
            6.6 Liters (403 cubic inches)
        
     
    
    
        
            Aspiration:
        
        
            Turbocharged, Intercooled
        
     
    
        
            Horsepower:
        
        
            Approx. 310 hp (LLY)
        
     
    
        
            Torque:
        
        
            Approx. 525 lb-ft (LLY)
        
     
    
    
        
            Injection Type:
        
        
            High-pressure common rail direct injection
        
     
    
    
    
        
            Coolant Capacity:
        
        
            Refer to manual for specific capacity (typically high for heavy-duty use).
        
     
    
    
        
            Oil Capacity:
        
        
            Refer to manual for specific capacity (typically 10-12 quarts).
        
     
    
        
            Oil Specification:
        
        
            Refer to manual for specific GM dexos or Allison approved fluids (e.g., 15W-40 or 5W-40 synthetic diesel oil).
        
     
 
    
    
    
        
            Type:
        
        
            Allison 1000 5-speed Automatic Transmission
        
     
    
    
        
            Type:
        
        
            Manual transmission options may have existed for earlier models or specific variants, but the 2006 H1 primarily featured the Allison automatic.
        
     
    
    
        
            Transfer Case:
        
        
            Central Tire Inflation System (CTIS) enabled, full-time 4WD with locking center and rear differentials.
        
     
    
    
        
            Transmission Fluid Type:
        
        
            Refer to manual for specific Allison TES 295 approved fluids (e.g., Dexron III/VI compatible but TES 295 is preferred).
        
     
    
    
        
            Transmission Fluid Capacity:
        
        
            Refer to manual for specific capacity.
        
     
 
    
    
    
        
            Length:
        
        
            Approx. 202.5 inches (varies by body style)
        
     
    
        
            Width:
        
        
            Approx. 86.5 inches (excluding mirrors)
        
     
    
        
            Height:
        
        
            Approx. 77.0 inches (varies by body style)
        
     
    
        
            Wheelbase:
        
        
            Approx. 130 inches (varies by body style)
        
     
    
    
        
            Curb Weight:
        
        
            Approx. 7,000 - 8,000 lbs (varies by body style)
        
     
    
        
            Gross Vehicle Weight Rating Gvwr:
        
        
            Approx. 10,500 - 11,500 lbs
        
     
    
        
            Towing Capacity:
        
        
            Refer to manual; typically very high for its class.
        
     
 
    
    
    
        
            Crash Test Ratings:
        
        
            No standardized NHTSA or IIHS crash test ratings due to its niche and origin.
        
     
    
    
        
            Seatbelts:
        
        
            Three-point seatbelts (front), lap belts (rear, depending on configuration).
        
     
    
        
            Rollover Protection:
        
        
            Robust frame and body construction designed for extreme terrain stability.
        
     
    
    
        
            ABS:
        
        
            Anti-lock Braking System (ABS)
        
     
    
        
            Ctis:
        
        
            Central Tire Inflation System (CTIS) for adjusting tire pressure on the fly.
        
     
 
    
    
    
        
            Oil Change:
        
        
            Refer to manual for specific mileage/time intervals (typically 5,000-7,500 miles for diesel).
        
     
    
        
            Transmission Service:
        
        
            Refer to manual for specific mileage/time intervals (typically 30,000-50,000 miles).
        
     
    
        
            Coolant Flush:
        
        
            Refer to manual for specific mileage/time intervals.
        
     
    
    
        
            Brake Fluid Type:
        
        
            DOT 3 or DOT 4.
        
     
    
        
            Power Steering Fluid:
        
        
            Refer to manual for specific type (likely Dexron compatible).
        
     
    
    
        
            Common Wear Items:
        
        
            Axle shafts, CV joints, suspension bushings due to extreme load and use.
        
     
    
        
            Engine Duramax Lly:
        
        
            Potential for injector issues, EGR valve problems, and injector harness issues on some early LLY engines, though 2006 LLY is generally more refined than earlier versions.
        
     
    
        
            Ctis System:
        
        
            Potential for leaks or sensor failures in the Central Tire Inflation System.