🏷️ Basic Information

Make:

Chevrolet

Model:

Silverado 2500HD

Generation:

Second Generation (GMT800)

Model Years Covered:

2000, 2001, 2002, 2003, 2004, 2005, 2006

Chassis Code:

GMT800

👋 Introduction

Vehicle Segment:

Heavy-Duty Pickup Truck

Target Market:

Commercial users, fleet owners, individuals requiring significant towing and hauling capability

Key Competitors:

Ford F-250 Super Duty, Dodge Ram 2500

Manual Value Proposition:

Authoritative, factory-accurate repair and maintenance information, saving time and money compared to dealership services.

Manual Scope:

Extremely broad, covering nearly every system and component of the vehicle.

📋 Manual Details

Manual Type:

Factory Service Manual / Workshop Manual

Page Count:

23000+

Language:

English

Format:

PDF (Digital Download)

Delivery Method:

CD-ROM (implied, with print/copy functionality)

📖 Manual Coverage

Body And Chassis:

Body Control System, Body Front End, Body Rear End, Bumpers, Collision Repair, Doors, Entertainment, Exterior Trim, Frame and Underbody, Garage Door Opener, Horns, Instrument Panel, Gages and Console, Interior Trim, Keyless Entry, Lighting System, Paint Coatings, Personalization, Plastic Panel Information and Repair, Power Outlets, Power Take-Off, Programming, Retained Accessory Power, Seats, Stationary Windows, Theft Deterrent, Vehicle DTC Information, Wipers Washer System, Wiring System

Brakes:

Antilock Brake System (ABS), Disc Brakes, Hydraulic Brake System, Park Brake System

Driveline And Axles:

Drive Axle, Front Drive Axle, Propeller Shaft, Rear Drive Axle, Transfer Case Overhaul, Wheel Drive Shafts

Electrical And Electronics:

Battery, Charging System and Starting System Diagnosis, Fuses and Circuit Breakers, Data Link Communications

Engine And Controls:

Engine Cooling, Engine Exhaust, Engine Mechanical (4.3L, 4.8L, 5.3L, 6.0L, 6.6L LB7, 6.6L LLY, 8.1L), Engine Controls (Diagnostic Information, Troubleshooting, DTC P0005-P2665), Engine Performance, Firing Order and Cylinder Identification, Mechanical Repair (specific engines)

HVAC:

Heating, Ventilation and Air Conditioning (HVAC) - Automatic and Manual systems

Restraints:

Seat Belts, SIR (Supplemental Inflatable Restraint/Airbag System)

Steering:

Power Steering System, Rear Wheel Steering (if applicable), Steering Linkage, Steering Wheel and Column

Suspension:

Front Suspension, Rear Suspension, Selectable Ride Control, Suspension General Diagnosis, Tires and Wheels, Wheel Alignment

Transmission And Drivetrain:

Allison Transmission (Diagnostic Info, Intro, Troubleshooting, Diagnosis, Overhaul), 4L60E/4L65E Transmissions (Diagnostic Info, Intro, Diagnosis, Troubleshooting, Overhaul), 4L80E/4L85E Transmissions (Diagnostic Info, Intro, Troubleshooting, Diagnosis, Overhaul), Clutch Systems, Manual Transmissions (NV3500, NV4500, ZF S6-650 Overhaul), Transfer Case, Transmission Transaxle (Shift Lock Control)

Diagnostic Procedures:

Strategy Based Diagnosis, DTC Information, Specific Diagnostic Procedures for all major systems, Troubleshooting Guides

Repair Procedures:

Complete step-by-step repair instructions for all listed systems and components, including engine mechanical repair, transmission overhaul, body panel repair, etc.

Maintenance Procedures:

Routine maintenance, lubrication, fluid checks and changes, filter replacements, belt replacements, tune-up procedures

Component Rebuilds:

Overhaul procedures for engines, transmissions, transfer cases, and other major components

Depth Of Coverage:

Comprehensive (covering diagnostics, repair, rebuilds, maintenance, and troubleshooting for all major vehicle systems)

Content Type:

Hi-Resolution Illustrations, Instructions, Photos, Diagrams

Target Audience:

Professional Technicians and DIY Enthusiasts

📊 Manual Specifications

File Type:

PDF

Compatibility:

Windows (XP, Vista, 7, 8, 10, 11), Mac, Tablet, Phone (32/64 bit)

Searchability:

Likely searchable text within PDF (standard for factory manuals)

Illustration Quality:

Hi-Resolution

Diagram Quality:

Detailed and clear

Binding Type:

N/A (Digital PDF)

Paper Type:

N/A (Digital PDF)

⚙️ Engine Specifications

Available Engines:

4.3L Vortec V6, 4.8L Vortec V8, 5.3L Vortec V8, 6.0L Vortec V8, 6.6L Duramax Diesel (LB7, LLY), 8.1L Vortec V8

Horsepower Torque:

Varies significantly by engine. For example, the 6.0L Vortec V8 typically produced around 300-325 hp and 370-380 lb-ft of torque, while the 6.6L Duramax Diesel (LB7) offered around 300 hp and 520 lb-ft of torque.

Fuel Delivery:

Electronic Fuel Injection (EFI)

Diesel Engine Codes:

LB7 (early 2000s Duramax), LLY (later 2004+ Duramax)

🔧 Transmission

Standard Transmission:

Varies by model year and configuration; likely the 4L80E 4-speed automatic was common, with manual transmissions like the NV4500 and ZF S6-650 available in specific trims.

Optional Transmissions:

Allison 1000 5-speed automatic (with Duramax diesel), NV3500, NV4500, ZF S6-650 manual transmissions

Transmission Features:

Tow/haul mode, electronic shifting, diagnostic capabilities for automatics.

Automatic Transmission Fluid:

Dexron-III (or equivalent, consult manual for specifics and updates)

Manual Transmission Fluid:

GL-4 or GL-5 gear oil, specific viscosity as per manual.

📐 Dimensions

Wheelbase:

Typically 130.0 inches (Regular Cab), 143.5 inches (Extended Cab), 153.0 inches (Crew Cab)

Overall Length:

Varies by cab and bed configuration (e.g., 218.8 inches for Regular Cab Long Bed)

Width:

Approximately 79.5 inches

Height:

Approximately 76.7 inches

Curb Weight:

Varies by configuration, typically starting around 5,500 lbs.

Gross Vehicle Weight Rating Gvwr:

Ranges from 8,600 lbs to 10,000 lbs, depending on configuration and options.

Maximum Trailering Capacity:

Up to approximately 12,000+ lbs, depending on configuration.

Payload Capacity:

Up to approximately 4,000+ lbs, depending on configuration.

🛡️ Safety Features

NHTSA Rollover Resistance:

Not typically rated by NHTSA for heavy-duty trucks in the same way as passenger vehicles. Sturdy construction and high center of gravity are inherent.

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Available Traction Control System (TCS) on some models.

Airbags:

Driver and front passenger airbags.

Seat Belts:

Front and rear seat belts, some with pretensioners.

💡 Technology Features

Infotainment Systems:

Base radio systems, optional CD players, cassette players, and early satellite radio integration. Limited touchscreen or advanced navigation options in this era.

Driver Assistance Features:

Basic features like cruise control, ABS. Advanced driver-assistance systems (ADAS) like adaptive cruise control, lane departure warning, etc., were not common or available in this model year range.

Connectivity Features:

Limited to basic audio inputs (auxiliary jack may be present on later models). OnStar integration available on some models.

🔧 Maintenance

Oil Change Interval:

Typically 3,000-5,000 miles or 3-6 months for conventional oil, potentially longer for synthetic oil. Specific interval depends on engine and driving conditions (consult manual).

Transmission Fluid Change:

Recommended every 30,000-60,000 miles for heavy-duty use, or as specified by the manual.

Coolant Flush:

Typically every 50,000-100,000 miles or 3-5 years, depending on coolant type (e.g., extended life).

Engine Oil Type:

API Certified SAE 5W-30 or 10W-30 (depending on ambient temperature and engine type). Diesel engines may require specific diesel-rated oils like API CJ-4 or CK-4. Consult manual.

Coolant Type:

GM-specific orange or Dex-Cool coolant (50/50 mix with distilled water) or equivalent.

Brake Fluid Type:

DOT 3

Common Duramax Issues:

Injector failures (LB7), turbocharger issues, injector harness problems, glow plug issues, EGR valve issues (though less prevalent in early models compared to later ones).

Common Gas Engine Issues:

Intake manifold gasket leaks (older designs), cooling system leaks, spark plug and ignition coil issues (typical wear items).

Common Transmission Issues:

Torque converter shudder (automatics), clutch wear (manuals), transmission cooler line leaks.

Suspension And Steering:

Ball joint wear, tie rod end wear, steering linkage looseness, shock absorber failure.

📚 Vehicle History

Chevrolet Truck Legacy:

Chevrolet has a long and storied history in the pickup truck market, dating back to the early 20th century with models like the 'Stovebolt Six'.

Silverado Hd Introduction:

The Silverado HD nameplate emerged as part of the GMT800 platform generation, replacing the older C/K series trucks, offering increased capability and refinement.

Gmt800 Platform:

The GMT800 platform was known for its robust construction, improved ergonomics, and the introduction of significant powertrain options like the Duramax diesel.

Manufacturing Location:

Primarily produced at GM's Fort Wayne, Indiana assembly plant and Oshawa, Ontario, Canada assembly plant.

🏆 Awards & Recognition

Truck Of The Year:

While specific awards for the 2000-2006 model years might not be widely publicized as modern awards, the Silverado HD consistently ranked high in its class for capability and durability, often receiving positive reviews from automotive publications for its towing prowess.

Consumer Ratings:

Generally positive, particularly for the Duramax diesel models' performance and longevity. Issues varied by powertrain and specific model year.

Emissions Standards:

Meets federal emissions standards for the respective model years.