2023 Chevrolet Silverado 2500 HD / 3500 HD repair manual

2023 Chevrolet Silverado 2500 HD / 3500 HD workshop manual (T1XX): factory repair procedures and wiring diagrams

The 2023 Chevrolet Silverado 2500 HD / 3500 HD (T1XX) factory repair manual, made for your VIN from GM's own service information: step-by-step repair procedures, specifications and wiring diagrams for your exact Silverado 2500 HD / 3500 HD. The 2023 Silverado 2500 HD / 3500 HD was offered with two engines and two transmissions (listed below); the manual you get is for the combination in your VIN.

This page is for the heavy-duty 2023 Silverado 2500 HD and 3500 HD. For the light-duty truck, see the 2023 Chevrolet Silverado 1500 manual.

Bought from a Google Top Quality Store, owned by you. No account to renew and no access that runs out: the manual stays on your computer, phone or tablet.

What you get with this manual

• Manufacturer data: written by GM, not rewritten by a third-party publisher
• Built for your VIN: only the engine, gearbox and options your Silverado 2500 HD / 3500 HD actually has
• One payment: no subscription, no login that expires, no monthly fee
• 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
• Computer, phone or tablet: no app needed, and you can print the pages you work from
• Online since 2015, rated a Google Top Quality Store

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: removal and installation steps, torque specs, diagnostic trouble codes, wiring diagrams and component locations

Your 2023 Silverado 2500 HD / 3500 HD is from the T1XX Silverado HD generation, built for model years 2020–2026. 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.

Engine options

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

Transmission options

• 6-speed automatic (gasoline)
• Allison 10-speed automatic (diesel)

Your manual is built for your version only: the VIN tells us the exact engine and transmission.

What a 2023 Silverado 2500 HD / 3500 HD usually needs

• 12-volt battery replacement
• Scheduled service, oil and filter changes
• Programming a module after a part is replaced
• Camera and radar calibration after windshield or bumper work
• Tire pressure sensor relearn
• Glow plugs and cold-start faults
• Diesel particulate filter regeneration
• EGR valve and cooler

Recalls and owner complaints for the 2023 Silverado 2500 HD / 3500 HD

The U.S. safety agency NHTSA lists 1 safety recall and 63 owner complaints for the 2023 Silverado 2500 HD / 3500 HD. The factory manual has the procedures for the parts involved.

• Latches/Locks/Linkages: Latch (campaign 24V060000)

Most owner complaints concern: Power Train (27), Electrical System (17), Engine (11), Unknown Or Other (9), Latches/Locks/Linkages (6).

On a 2023 vehicle the 10th character of the 17-digit VIN is “P”, a quick way to confirm the model year before you order.

Also for Chevrolet: 2025 Equinox EV, 2020 Tornado/Montana, 2019 Tornado/Montana repair manua, 2018 City Express, 2023 Camaro, 2019 Cruze, 2020 Impala, 2023 Malibu, 2023 Sonic, 2022 Spark.

How we make your manual

1. You give us the VIN at checkout.
2. We build the manual from GM data for that exact Silverado 2500 HD / 3500 HD.
3. You get a PDF in your inbox within 12–24 hours, to keep on any computer, phone or tablet.

Sections of the 2023 Silverado 2500 HD / 3500 HD service 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:

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

Transmissions:

• 6-speed automatic (gasoline)
• Allison 10-speed automatic (diesel)

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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