2004 Chevrolet Silverado 2500 HD / 3500 HD repair manual

2004 Chevrolet Silverado 2500 HD / 3500 HD OEM service and repair manual, GMT800 – VIN-specific PDF

The 2004 Chevrolet Silverado 2500 HD / 3500 HD (GMT800) factory repair manual, made for your VIN from GM's factory service data: repair procedures, torque specs and wiring diagrams for your exact Silverado 2500 HD / 3500 HD. The 2004 Silverado 2500 HD / 3500 HD was offered with three engines and three transmissions (listed below); we build your manual for the combination your VIN shows.

This page is for the heavy-duty 2004 Silverado 2500 HD and 3500 HD. For the light-duty truck, see the 2004 Chevrolet Silverado 1500 manual.

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Why owners choose factory-manuals.com

• Built for your VIN: only the engine, gearbox and options your Silverado 2500 HD / 3500 HD actually has
• Yours to keep: pay once and the PDF stays with you
• A PDF with working hyperlinks: click a reference in a procedure and you land on the wiring diagram, spec or step it points to. Most PDF manuals sold online are flat scans without them
• Complete wiring diagrams and connector views, not just the mechanical sections
• Works on any device, offline, and prints page by page for the garage
• A Google Top Quality Store, online since 2015

What this manual has that the owner's manual does not

The owner's manual stops where the repair starts. The factory repair manual picks up from there:

• Owner's manual: controls, warning lights, maintenance schedule, fluid types
• Factory repair manual: diagnosis by trouble code, step-by-step repairs, tightening torques, wiring diagrams and connector views

The 2004 Silverado 2500 HD / 3500 HD belongs to the GMT800 Silverado HD generation, model years 2001–2006. Most procedures are shared with the other years of this generation, but options, software and wiring changed along the way, which is why the manual is built for your VIN.

Engines offered

• 6.0L V8 gasoline
• 8.1L V8 gasoline
• 6.6L Duramax V8 turbo diesel

Gearbox options

• 4-speed automatic
• Allison 1000 5-speed automatic
• 6-speed manual

Not sure which version you have? You don't need to know: the VIN tells us, and the manual is built for it.

Typical repairs for a 2004 Silverado 2500 HD / 3500 HD

• Fuel pump, filter and lines
• Brake lines, hoses and master cylinder
• Ignition components and idle problems
• Suspension bushings and steering play
• Cooling system overhaul
• Glow plugs and cold-start faults
• Diesel particulate filter regeneration
• EGR valve and cooler

2004 Silverado 2500 HD / 3500 HD: recalls and known problems

The U.S. safety agency NHTSA lists 2 safety recalls for the 2004 Silverado 2500 HD / 3500 HD. When a part on this list fails out of warranty, the manual shows how to test and replace it.

• Steering (campaign 06E010000)
• Fuel System, Gasoline (campaign 06E043000)

Check your VIN: the 10th character is “4” on a 2004 model.

Also for Chevrolet: 2002 Camaro, 2015 City Express, 2004 Impala, 2004 Malibu, 2006 Captiva Sport, 2009 Cheyenne, 2004 Colorado, 2004 Corvette, 2008 Cruze, 2012 Sonic.

Made to order, not a generic download. We start from your VIN, collect the GM procedures and diagrams that apply to it and send you the PDF within 12–24 hours.

What you'll find in the 2004 Silverado 2500 HD / 3500 HD manual

• Vehicle identification and general information
• Lubrication and scheduled maintenance
• Engine: removal, overhaul and timing
• Engine cooling
• Fuel and engine controls
• Starting, charging and battery
• Exhaust and emissions
• Transmission and transfer case
• Axles, driveline and wheel bearings
• Front and rear suspension
• Steering column and gear
• Brake system and ABS
• Climate control
• Supplemental restraint system
• Body repair and dimensions
• Interior and exterior trim
• Power windows, locks and mirrors
• Lighting
• Instrument cluster and warning lights
• Wiring diagrams and connector views
• Diagnostics and trouble codes

Engines:

• 6.0L V8 gasoline
• 8.1L V8 gasoline
• 6.6L Duramax V8 turbo diesel

Transmissions:

• 4-speed automatic
• Allison 1000 5-speed automatic
• 6-speed manual

Your manual is built for the version in your VIN.

This video is for information. Your manual looks and works the same way, but it is not identical.

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