Market Segment:
Ultra-heavy-duty, extreme-terrain, off-road vehicle with civilian applications
Competitors:
No direct civilian competitors offering equivalent off-road capability and robustness; often compared to modified SUVs for extreme off-roading
Key Features Vehicle:
Exceptional off-road capability, extreme durability, high ground clearance, robust powertrain, Central Tire Inflation System (CTIS) on some models
Key Features Manual:
Comprehensive coverage, professional detail, user-friendly format for DIY and professional technicians, lifetime access
Delivery:
Instant Download
Device Compatibility:
Computers (Windows & MAC), Tablets, Smartphones
Usage License:
Lifetime use on unlimited devices, no expiry
Renewal Policy:
No renewal fees or subscriptions
Version Type:
Full, unrestricted version
Print Capability:
Print single pages or entire manual
Coverage Type:
Complete Factory Service Repair Workshop Manual
Technical Depth:
Professional-level repair, servicing, and troubleshooting
Content Description:
Hundreds of pages with detailed photos & diagrams, step-by-step instructions, exploded diagrams
Repair Procedures:
All repair procedures
Servicing Procedures:
All servicing procedures
Troubleshooting Procedures:
All troubleshooting procedures
Engine Systems:
Engine mechanical, lubrication, cooling, fuel, ignition, exhaust
Drivetrain Systems:
Transmission (automatic/manual), transfer case, drivelines, differentials, axles
Suspension Steering:
Suspension components, steering system, alignment
Braking Systems:
Brake system components, hydraulics, parking brake
Electrical Systems:
Starting and charging system, lighting, instruments, body electrical, wiring diagrams
HVAC Systems:
Heating, Ventilation, and Air Conditioning (HVAC)
Body Chassis:
Body construction, doors, windows, interior trim, chassis components
Wheels Tires:
Wheel and tire specifications, mounting, balancing
Engine Code:
Likely GM 6.5L Turbo Diesel (L65/LB8 or similar variants for H1)
Engine Type:
V8 Turbocharged Diesel
Displacement:
6.5 Liters (397 cubic inches)
Horsepower Est:
Approximately 170-205 hp (depending on specific turbo and tuning)
Torque Est:
Approximately 370-430 lb-ft (depending on specific turbo and tuning)
Injection System:
Indirect Injection (IDI) with Turbocharging and possibly Electronic Control Unit (ECU) management
Cooling System Type:
Pressurized liquid cooling system
Oil Capacity Quarts:
Typically around 8-10 quarts (check manual for exact specification)
Oil Type Spec:
API CD/CE/CF rated heavy-duty diesel engine oil (e.g., 15W-40, consult manual for exact viscosity and specification)
Transmission Type:
Likely 4-speed automatic (GM 4L80-E or similar heavy-duty unit)
Transmission Fluid Type:
Dexron III/Mercon (consult manual for specific GM specification)
Transmission Fluid Capacity:
Approximately 12-16 quarts (including torque converter, consult manual)
Length Overall:
Varies by body style, but typically around 200 inches (5080 mm)
Width Overall:
Approximately 86 inches (2184 mm)
Height Overall:
Approximately 79 inches (2007 mm)
Curb Weight Lbs:
Approximately 6,000 - 7,000 lbs (2721 - 3175 kg)
Gross Vehicle Weight Rating Gvwr Lbs:
Typically around 10,000 - 10,500 lbs (4536 - 4763 kg)
Towing Capacity Lbs:
Varies, but capable of substantial towing (check specific configuration and manual)
Wheelbase Inches:
Approximately 130 inches (3302 mm)
Standard Tire Size:
Commonly 37x12.50R16.5 or similar aggressive off-road tires
Wheel Bolt Pattern:
Specific to H1, often 8-lug on a specialized hub assembly
Ground Clearance Inches:
Exceeds 16 inches (406 mm), exceptionally high
Crash Test Information:
Limited official NHTSA/IIHS ratings due to specialized nature; design prioritizes ruggedness and survivability
Braking System Type:
Four-wheel hydraulic disc brakes
Seat Belts:
Three-point seat belts (front), lap belts (rear, depending on configuration)
Structural Integrity:
Robust body-on-frame construction designed for extreme environments
Infotainment System:
Basic AM/FM radio with cassette player, optional CD player; manual covers its repair and maintenance
Driver Assistance Features:
Limited to standard vehicle controls; no electronic driver aids common in modern vehicles
Connectivity Features:
None beyond basic electrical systems
Engine Oil Change Interval:
Typically 3,000 - 5,000 miles or 6 months (consult manual for diesel-specific recommendations)
Transmission Fluid Change Interval:
Typically 30,000 - 60,000 miles (consult manual for heavy-duty use)
Coolant Flush Interval:
Every 30,000 - 50,000 miles or 2-3 years (consult manual for coolant type)
Brake Fluid Type:
DOT 3 or DOT 4 (consult manual for exact specification)
Power Steering Fluid Type:
GM Power Steering Fluid or equivalent Dexron fluid (consult manual)
Common Wear Items:
Suspension components (bushings, ball joints), brake wear, turbocharger maintenance, exhaust system components
Diesel Specific Concerns:
Glow plug system, fuel injector maintenance, potential for exhaust manifold leaks
Oil Filter Example:
AC Delco PF1218 or equivalent (verify with manual/parts catalog)
Fuel Filter Example:
GM 25158041 or equivalent (verify with manual/parts catalog)
Manufacturer Origin:
Originally developed by AM General for military use (HMMWV or Humvee)
Civilian Introduction:
Civilian version of the HMMWV introduced in 1992, with H1 designation becoming prominent
1996 Model Year:
Represents a refined iteration of the original civilian H1, featuring various powertrain and comfort updates over earlier models
Production Location:
Mishawaka, Indiana, USA
Production Period:
H1 production ran from 1992 to 2006
