Segment:
Ultra-heavy duty, off-road, military-derived civilian vehicle.
Niche:
Unmatched in extreme off-road capability and ruggedness within the civilian market.
Ownership Benefit:
Empowers owners to perform extensive maintenance and repairs, saving significant costs.
Ease Of Use:
Features easy-to-follow step-by-step instructions and pictures.
Engine Mechanical:
Complete diagnosis, repair, overhaul, timing, cooling, lubrication, fuel injection (DMAX specific), emissions control.
Engine Electrical:
Ignition system, starting system, charging system, ECU diagnosis, wiring diagrams, sensor testing.
Transmission:
Automatic transmission (e.g., Allison) service, repair, troubleshooting, fluid specifications, torque converter.
Drivetrain:
Transfer case operation and repair, front and rear axles, driveshafts, CV joints, differentials.
Brakes:
Hydraulic brake system, ABS diagnostics and repair, brake pad and rotor replacement, caliper service.
Suspension Steering:
Independent front suspension, rear solid axle, shocks, springs, control arms, steering gear, power steering system.
Chassis Frame:
Frame inspection, repair, body mounting, suspension attachment points.
Electrical Body:
Lighting systems, power windows, door locks, HVAC controls, interior and exterior trim, instrument panel.
HVAC:
Air conditioning system diagnosis and repair, heater core service, climate control unit.
Fuel System:
Fuel tank, fuel pump, fuel lines, fuel filter replacement, diesel injection system specifics for DMAX.
Preventive Maintenance:
Oil changes, filter replacements, fluid checks, tire rotations, belt inspections.
Troubleshooting:
Diagnostic flowcharts, symptom-based troubleshooting for various systems.
Major Repairs:
Engine overhaul, transmission rebuild, axle replacement, suspension component replacement.
Component Removal Installation:
Detailed instructions for removing and installing all major and minor components.
Torque Specifications:
Crucial torque values for critical fasteners across all systems.
Wiring Diagrams:
Comprehensive electrical schematics for all vehicle systems.
Diagnostic Procedures:
Step-by-step guides for diagnosing electronic and mechanical faults.
Depth:
Comprehensive (from basic maintenance to complete engine and transmission rebuilds, including advanced diagnostics).
Engine Type:
6.6L Duramax V8 Turbo-Diesel (LLY or LBZ variant typical for 2006 H1)
Horsepower:
Approx. 300-315 hp (varies by specific LLY/LBZ tune)
Torque:
Approx. 520-555 lb-ft (varies by specific LLY/LBZ tune)
Injection System:
High-pressure common rail direct injection
Cooling Type:
Liquid-cooled, thermostatically controlled
Overall Length:
Approx. 202-220 inches (depending on body style - Wagon, SUV, Alpha)
Overall Width:
Approx. 86.5 inches
Overall Height:
Approx. 77.4 - 80 inches (depending on body style)
Curb Weight:
Approx. 6,800 - 7,200 lbs
Gross Vehicle Weight Rating Gvwr:
Approx. 9,200 - 10,200 lbs
Towing Capacity:
Approx. 7,000 - 10,000 lbs
Ground Clearance:
Approx. 16 inches
Approach Angle:
Approx. 70 degrees
Departure Angle:
Approx. 36 degrees
Breakover Angle:
Approx. 60 degrees
Engine Oil Change Interval:
Refer to manual for specific interval, typically 5,000 - 7,500 miles or annually, depending on usage.
Transmission Fluid Change Interval:
Refer to manual, typically every 30,000 - 50,000 miles, more frequently under severe use.
Fuel Filter Replacement Interval:
Refer to manual, typically every 15,000 - 30,000 miles, crucial for diesel engines.
Engine Oil Spec:
API CJ-4 or CK-4 certified, SAE 15W-40 synthetic or synthetic blend diesel engine oil (consult manual for exact spec and viscosity).
Transmission Fluid Spec:
Dexron III/Mercon or Allison TES 295 approved fluid.
Coolant Spec:
Ethylene glycol based, long-life (OAT) coolant, typically requiring a 50/50 mix with distilled water.
Duramax Glow Plugs:
Glow plug system reliability can be a concern; manual provides diagnostic procedures.
Duramax Egr Cooler:
EGR cooler leaks are a known potential issue on these engines; manual covers inspection and replacement.
ABS Sensor Issues:
ABS sensor failures can occur due to exposure to the elements; manual details testing and replacement.
Central Tire Inflation System Ctis:
CTIS components can require maintenance and troubleshooting; manual covers system operation and repair.
Brand Origin:
Hummer brand originated from AM General's development of the HMMWV (High Mobility Multipurpose Wheeled Vehicle) for the US military.
Civilian H1:
The Hummer H1 was the civilian version of the HMMWV, launched in 1992. The H1 Alpha, introduced in 2004, featured the Duramax diesel engine and improved amenities.
Production Period:
Civilian H1 production ran from 1992 to 2006.
Manufacturing Location:
AM General Assembly Plant, Mishawaka, Indiana, USA.
