🏷️ Basic Information

Make:

Chevrolet

Model:

Silverado 3500 HD

Year:

2008

Body Style:

Heavy Duty Pickup Truck

Generation:

Second Generation (GMT900)

Platform Code:

GMT900

👋 Introduction

Segment:

Full-size Heavy Duty Pickup Truck

Key Competitors:

Ford F-Series Super Duty (F-250, F-350), Dodge Ram 2500/3500 HD.

Manual Advantage:

Licensed OE information provides accuracy and completeness beyond aftermarket guides.

Software Benefit:

Instant access, searchable content, compatibility with multiple devices, cost-effective alternative to printed manuals.

📋 Manual Details

Service And Repair Coverage:

Comprehensive vehicle service and repair for the 2008 Chevrolet Silverado 3500 HD.

Estimated Page Count:

Likely exceeds 2000 pages (typical for comprehensive OE service manuals).

Type:

Official Service and Repair Manual Software

Language:

English

Format:

PDF Download (Accessed via web browser with internet connection)

📖 Manual Coverage

Engine Systems:

Engine mechanical, fuel injection, ignition, cooling, lubrication, emission control, starting and charging systems, engine control module (ECM).

Drivetrain Systems:

Manual and automatic transmissions, transfer case, drive axles, propeller shafts, differentials.

Suspension And Steering:

Front and rear suspension components, steering gear, power steering system, wheel alignment.

Braking Systems:

Hydraulic brake system, Anti-lock Braking System (ABS), parking brake, brake pad and rotor replacement, brake caliper service.

Electrical Systems:

Battery, charging system, starting system, lighting, instrumentation, power windows, power locks, mirrors, fuses, relays, body control module (BCM), Powertrain Control Module (PCM).

HVAC Systems:

Heating, ventilation, and air conditioning (HVAC) system diagnosis and repair, refrigerant handling.

Body And Chassis:

Frame, body panels, doors, hood, tailgate, interior trim, glass replacement, bumpers.

Safety Systems:

Airbag system (SRS), seat belt systems.

Exhaust System:

Exhaust manifold, catalytic converter, mufflers, pipes, and emissions control components.

Fuel Tank And Lines:

Fuel tank removal/installation, fuel pump, fuel lines, fuel filter replacement (diesel models have specific filter requirements).

Cooling System:

Radiator, coolant hoses, water pump, thermostat, fan clutch, and cooling fan operation.

Lighting And Signals:

Headlights, taillights, turn signals, brake lights, interior lighting, fog lights, and related wiring.

Instrumentation And Gauges:

Dashboard indicators, gauges (speedometer, tachometer, fuel, temperature, oil pressure), warning lights, and their associated sensors and wiring.

Diagnostic Procedures:

Diagnostic trouble codes (DTCs), symptom-based diagnostics, component testing, wiring diagrams and troubleshooting guides.

Maintenance Procedures:

Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt replacement, scheduled maintenance intervals.

Repair Procedures:

Component removal and installation, system repairs, adjustments, calibration.

Rebuild Procedures:

Engine assembly/disassembly, transmission overhaul, differential rebuild (where applicable).

Wiring Schematics:

Detailed electrical diagrams for all vehicle systems, including engine, chassis, body, and accessories.

Torque Specifications:

Comprehensive list of all torque specifications for fasteners across all vehicle systems.

Special Tool Requirements:

Identification and usage instructions for any specialized tools required for specific repair procedures.

Depth Of Information:

Factory-level technical information for diagnostics, repair, and maintenance.

Level Of Detail:

Detailed step-by-step instructions, torque specifications, special tool requirements, wiring schematics, and component locations.

📊 Manual Specifications

Digital Format:

PDF

Scalability:

High-resolution, scalable for clarity on any device; printable pages.

Binding:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Option 1:

6.0L V8 Power Stroke Turbodiesel (LQ4)

Engine Option 1 Description:

Displacement: 6.0 Liters (365 cu. in.), Configuration: V8, Fuel: Diesel, Aspiration: Turbocharged.

Engine Option 2:

6.6L V8 Duramax Turbo-Diesel (LLY/LBZ)

Engine Option 2 Description:

Displacement: 6.6 Liters (403 cu. in.), Configuration: V8, Fuel: Diesel, Aspiration: Turbocharged.

Engine Option 3:

6.0L V8 Vortec Gasoline (LQ4)

Engine Option 3 Description:

Displacement: 6.0 Liters (365 cu. in.), Configuration: V8, Fuel: Gasoline, Aspiration: Naturally Aspirated.

Hp 6.0L Gas:

Approx. 300-320 hp (varies by application)

Torque 6.0L Gas:

Approx. 360-370 lb-ft (varies by application)

Hp 6.6L Duramax:

Approx. 300-360 hp (varies by specific Duramax variant - LLY/LBZ)

Torque 6.6L Duramax:

Approx. 520-765 lb-ft (varies by specific Duramax variant - LLY/LBZ)

Fuel Type Diesel:

Diesel (Common Rail for Duramax)

Fuel Type Gasoline:

Unleaded Gasoline

Injection Type:

Sequential Multi-Port Fuel Injection (MPI) for gasoline; High-pressure common rail direct injection for diesel.

🔧 Transmission

Transmission Option 1:

Allison 1000 6-Speed Automatic Transmission

Transmission Option 1 Description:

Heavy-duty automatic designed for diesel applications.

Transmission Option 2:

NV4500 5-Speed Manual Transmission

Transmission Option 2 Description:

Robust manual transmission often found in diesel models.

Drivetrain Configuration:

Rear-Wheel Drive (RWD) or Four-Wheel Drive (4WD)

📐 Dimensions

Wheelbase Options:

Various, including 133.5" (Regular Cab, Short Bed), 143.5" (Extended Cab, Short Bed), 153.5" (Regular Cab, Long Bed), 167.5" (Extended Cab, Long Bed), 168.5" (Crew Cab, Short Bed), 183.5" (Crew Cab, Long Bed).

Bed Length Options:

Short Box (6.5 ft), Long Box (8 ft)

Gvwr Range:

Typically 10,000 lbs to 12,000 lbs (Gross Vehicle Weight Rating), depending on configuration.

Curb Weight Range:

Approx. 6,000 - 7,500 lbs (varies significantly by configuration and engine).

🛡️ Safety Features

NHTSA Front Crash Test Rating:

5-Star (for 2008 Silverado 1500, similar structure for 3500 HD but heavier duty components may affect direct comparison).

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Available Traction Control System (TCS)

Airbags:

Driver and front passenger airbags. Side curtain airbags may be optional on certain trims.

Seatbelts:

Front seat shoulder/lap belts with pretensioners, rear seat belts.

💡 Technology Features

Audio System:

Standard AM/FM radio with CD player, optional upgraded audio systems with satellite radio (e.g., OnStar). Bose premium audio available on higher trims.

Parking Assist:

Rear parking assist sensors may be optional.

Onstar:

Optional OnStar system for navigation, vehicle diagnostics, and emergency services.

🔧 Maintenance

Oil Change Interval:

Gasoline: 7,500 miles or 6 months. Diesel: 5,000-7,500 miles or 6 months (depending on operating conditions, consult manual for specifics).

Transmission Fluid Change:

Automatic: 50,000 - 100,000 miles (heavy-duty use may require more frequent changes; consult manual).

Coolant Change:

Diesel: Initially at 150,000 miles, then every 75,000 miles. Gasoline: 100,000 miles or 5 years, then every 50,000 miles or 3 years.

Engine Oil Gasoline:

SAE 5W-30, API Certified (refer to manual for specific GM specification like dexos or equivalent).

Engine Oil Diesel:

CJ-4 or CK-4 rated Diesel Engine Oil, SAE 15W-40 or 5W-40 (depending on climate and specific Duramax/Power Stroke requirements, consult manual).

Transmission Fluid Automatic:

Dexron VI (or Dexron III H if specified for Allison 1000 in this year).

Transmission Fluid Manual:

GL-4 or GL-5 gear oil, SAE 75W-90 or 80W-90 (specifics vary by transmission model).

Coolant:

Dex-Cool (Orange, 50/50 mixture of ethylene glycol and deionized water) or equivalent.

Common Issues Diesel 6.0L Power Stroke:

Head gasket failure, EGR cooler failure, injector issues, turbocharger problems. (Note: The 6.0L was a Ford engine used in some GM chassis prior to the Duramax takeover, but this manual is for Chevrolet. It is important to clarify engine specifics, but if the manual covers it, it would detail these).

Common Issues Duramax 6.6L:

Injectors (early models), glow plug issues, turbocharger wastegate issues, EGR cooler leaks, water pump failures. (LLY and LBZ are generally robust).

Common Issues Gasoline 6.0L:

Intake manifold gasket leaks, exhaust manifold leaks, AFM/DOD lifter issues (if equipped, though less common in 3500HD for this year), catalytic converter issues.

📚 Vehicle History

Chevrolet Truck Legacy:

Chevrolet has a long-standing reputation for producing durable and capable pickup trucks since the early 20th century.

Silverado Hd Lineage:

The Silverado HD line is the successor to the Chevrolet C/K Heavy Duty series, continuing the tradition of robust trucks for commercial and heavy towing/hauling applications.

Manufacturing Location:

Fort Wayne, Indiana, USA; Oshawa, Ontario, Canada.

🏆 Awards & Recognition

Segment Awards 2008:

The Silverado HD line consistently received praise for its towing and hauling capabilities, often placing well in truck comparison tests from automotive publications.