🏷️ Basic Information

Make:

Chevrolet

Model:

Silverado 3500 HD

Year:

2007

Chassis Code:

GMT900 (GMT912/913)

👋 Introduction

Segment:

Heavy-Duty Pickup Truck

Target Audience:

Commercial fleets, heavy towing/hauling users, truck enthusiasts, professional mechanics, serious DIYers

Key Competitors:

Ford F-Series Super Duty, Ram 3500 HD

Vehicle Strength:

Renowned for durability, towing capacity, powerful engine options, and robust chassis construction.

Manual Value Proposition:

Provides essential, manufacturer-level technical information for maintaining and repairing the 2007 Silverado 3500 HD, ensuring optimal performance and longevity.

📋 Manual Details

Manual Type:

Service and Repair Manual

Language:

English

Format:

PDF Download (Software)

Estimated Page Count:

Extensive (Likely over 2000 pages, typical for heavy-duty truck service manuals)

📖 Manual Coverage

Engine:

All gasoline and diesel engines: 6.0L V8 Vortec, 6.6L V8 Duramax Turbo-Diesel (LBZ/LLY/LMM variations)

Transmission:

4-speed 4L70E automatic, 5-speed Allison 1000/2000 Series automatic, 6-speed Allison 2200/2400 Series automatic

Drivetrain:

Front Axle, Rear Axle, Transfer Case (4WD models), Driveshafts, CV joints

Brakes:

Front disc, Rear disc, Anti-lock Braking System (ABS), Brake fluid specifications

Suspension:

Front independent torsion bar (4WD) / coil spring (2WD), Rear solid axle with leaf springs, Steering system, Wheel alignment specifications

Electrical:

Battery, Charging system, Starting system, Lighting, Fuses, Relays, Body Control Module (BCM), Powertrain Control Module (PCM), Chassis Control Module (CCM), Instrument cluster, HVAC controls, Audio system

Fuel System:

Fuel injection (MPI), Fuel pump, Fuel filter, Diesel fuel system (high pressure common rail for Duramax), Glow plug system (diesel)

Cooling System:

Radiator, Fan clutch, Water pump, Thermostat, Coolant specifications

Exhaust System:

Catalytic converter, Muffler, Diesel Particulate Filter (DPF) if applicable to specific emissions packages

HVAC:

Air conditioning system, Heater core, Blower motor, Refrigerant type

Body:

Frame, Body panels, Doors, Hood, Tailgate, Bumpers, Interior trim, Glass, Mirrors

Diagnostics:

Diagnostic Trouble Codes (DTCs), Scan tool procedures, Troubleshooting flowcharts

Maintenance:

Oil changes, Filter replacements (oil, fuel, air, cabin), Tire rotation, Brake fluid flush, Coolant flush, Spark plug replacement (gasoline)

Repair:

Engine component replacement (pistons, rings, valves, gaskets), Transmission overhaul, Brake caliper/rotor replacement, Suspension component replacement (shocks, ball joints, tie rods), Electrical component diagnosis and replacement

Troubleshooting:

System-specific diagnostic procedures, Common fault diagnosis, Symptom-based troubleshooting guides

Installation:

Component replacement, Accessory installation guidelines (where applicable)

Depth:

Comprehensive: Covers basic maintenance to full engine and transmission overhauls, including detailed diagnostics and repair procedures. Essential for professional technicians and serious DIY enthusiasts.

📊 Manual Specifications

File Type:

PDF

Searchability:

Likely text-searchable PDF for efficient information retrieval

Printability:

Designed for clear printing of text, diagrams, and schematics

Binding:

N/A (Digital Download)

Paper:

N/A (Digital Download)

⚙️ Engine Specifications

Gasoline Engine:

6.0L (366 cu in) Vortec V8 (RPO L96)

Diesel Engine:

6.6L (403 cu in) Duramax V8 Turbo-Diesel (RPO LBZ/LLY/LMM)

6.0L Vortec V8:

Approx. 353-360 HP, 373-380 lb-ft torque (specifications vary slightly by application)

6.6L Duramax V8 (Lbz):

Approx. 360 HP, 725 lb-ft torque

6.6L Duramax V8 (Lly/Lmm):

Approx. 310-330 HP, 600-650 lb-ft torque (LLY earlier, LMM with DPF later)

Gasoline Injection Type:

Multi-Point Fuel Injection (MPFI)

Diesel Injection Type:

High-Pressure Common Rail (HPCR)

Valve Train:

Overhead Valve (OHV) 32-valve (V8)

Emission Controls:

Catalytic converters, Exhaust Gas Recirculation (EGR) for diesel, Diesel Particulate Filter (DPF) for LMM Duramax, On-Board Diagnostics (OBD-II)

🔧 Transmission

2Wd Models:

4-speed 4L70-E automatic transmission

4Wd Models:

4-speed 4L70-E automatic transmission (2WD) or Allison 1000/2000 Series 5-speed/6-speed automatic transmission (Duramax diesel)

Diesel Transmission:

Allison 1000 (5-speed) or 2000 Series (6-speed) automatic transmission

4L70-E:

Heavy-duty version of the 4L60E, designed for increased torque capacity.

Allison:

Robust, electronically controlled automatic transmissions known for durability and towing performance, featuring manual shift modes and tow/haul mode.

4L70-E:

Dexron VI Automatic Transmission Fluid (ATF)

Allison:

Dexron-VI or approved Allison TES 295 specification fluids

📐 Dimensions

Wheelbase:

143.5 inches (Standard Bed), 153.5 inches (Long Bed)

Overall Length:

237.7 inches (Standard Bed), 247.7 inches (Long Bed)

Bed Length:

78.8 inches (Standard Bed), 97.8 inches (Long Bed)

Curb Weight:

Approx. 6,500 - 7,500 lbs (varies with configuration)

Gvwr:

Up to 11,500 lbs

Payload Capacity:

Up to 5,000 lbs (approximate, depends on configuration)

Max Towing Capacity:

Up to 13,000 lbs (properly equipped, depends on configuration)

Max Gcwr:

Up to 22,000 lbs

🛡️ Safety Features

NHTSA Rollover Resistance:

4/5 stars (for certain configurations)

ABS:

Standard 4-wheel Anti-lock Braking System (ABS)

Traction Control:

Available Traction Control System (TCS)

Airbags:

Standard front airbags for driver and passenger

Seatbelts:

3-point safety belts with pretensioners

💡 Technology Features

Audio System:

Available AM/FM stereo with CD player, MP3 compatibility, auxiliary input. Higher trims may offer premium audio systems and satellite radio.

Navigation:

Optional factory-installed navigation system.

Cruise Control:

Standard cruise control.

Parking Assist:

Available rear parking assist sensors.

Onstar:

Available OnStar telematics system.

🔧 Maintenance

Oil Change Gasoline:

Every 5,000 - 7,500 miles or 6 months, or based on oil life monitoring system.

Oil Change Diesel:

Every 5,000 - 10,000 miles or 6 months, depending on usage (towing, idle time) and oil quality.

Air Filter:

Inspect every 15,000 miles, replace as needed or every 30,000-45,000 miles.

Fuel Filter Diesel:

Replace every 15,000 - 25,000 miles (critical for diesel longevity).

Engine Oil Gasoline:

API SN or higher, SAE 5W-30 (check owner's manual for specific viscosity)

Engine Oil Diesel:

API CJ-4 or approved heavy-duty diesel engine oil, SAE 15W-40 (check owner's manual for specific viscosity)

Coolant:

GM Delco-Spec 10352G, a 50/50 mix of Dex-Cool coolant and distilled water.

Brake Fluid:

DOT 3

Duramax Diesel:

Head gasket issues on earlier LB7/LLY engines (less common on LBZ/LMM), injector issues (especially with fuel contamination), EGR valve failures, potential turbocharger issues, DPF clogging on LMM.

Vortec Gasoline:

Intake manifold gasket leaks, camshaft position sensor failures, exhaust manifold leaks, transmission issues (4L70-E).

General:

Ball joint wear, steering components, electrical gremlins, potential frame rust in certain climates.

📚 Vehicle History

Chevrolet Trucks:

Chevrolet has a long and storied history in the truck market, dating back to the 1910s, building a reputation for reliability and capability.

Silverado Hd Lineage:

The Silverado HD line evolved from the C/K truck series, with the GMT900 platform introducing significant updates for 2007, including redesigned styling and improved powertrains.

Platform:

GMT900 platform (shared with other GM full-size trucks and SUVs of the era).

Manufacturing Locations:

Fort Wayne, Indiana; Oshawa, Ontario, Canada

🏆 Awards & Recognition

Truck Of The Year:

While specific awards for the 2007 model year may vary, the Silverado HD line consistently receives accolades for its towing and hauling capabilities from automotive publications.

Towing Hauling:

Generally highly rated by owners and reviewers for its robust performance in demanding tasks.