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.