2018 Chevrolet Silverado 3500 Service and Repair Manual

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Factory-Grade Data

2018 Chevrolet Silverado 3500 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Wiring diagrams and electrical sections
  • Powertrain, brakes, steering, suspension, HVAC and more

Trims covered

  • Base Cab & Chassis 2-Door

Engines covered

  • 6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

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Vehicle Safety Data

2018 Chevrolet Silverado 3500 Recalls & Complaints

NHTSA #19V32800025/04/2019Component: ENGINE

General Motors LLC (GM) is recalling certain 2019 Chevrolet Silverado 4500, 5500 and 6500 vehicles and 2017-2019 Chevrolet Silverado 2500 and 3500 vehicles and GMC Sierra 2500 and

Consequence

A short-circuit may damage the engine components and increase the risk of fire.

Remedy

GM will contact owners, dealers will replace the engine block heater, free of charge. Add

NHTSA #23V04700002/02/2023Component: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY

General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500, and GMC Sierra 2500, 3500 vehicles equipped with a dual fuel tank option. The rear fuel tan

Consequence

An engine stall increases the risk of a crash.

Remedy

Dealers will inspect the fuel tank and fuel pump module, replacing them as necessary. Dea

NHTSA #21V49600001/07/2021Component: EQUIPMENT:ELECTRICAL:ENGINE BLOCK HEATER

General Motors, LLC (GM) is recalling certain 2017-2019 Chevrolet Silverado 2500, 3500 and 2017-2019 GMC Sierra 2500 and 3500 vehicles equipped with a Duramax diesel 6.6 liter engi

Consequence

An electrical short-circuit can increase the risk of a fire.

Remedy

Dealers will replace engine block heaters and heater cords. Vehicles that have this featur

TSB #11032777

This PI provides diagnostic tips for diagnosing electric trailer brakes issues.

TSB #11030974

This preliminary information communicates information about how to determine if a wheel and tires size change is available.

TSB #11030092

This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.

TSB #11030091

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

TSB #11028931

This Preliminary Information communication provides information to the technician that some owners of Heavy Duty Trucks and Utilities may ask if they can lower their tire pressures. Tire pressures being set to the "Tire and Loading Label" w

TSB #11028700

This preliminary information communicates an issue with aftermarket LED headlights causing IPC warning messages and MIL along with several low speed lan DTCs.

TSB #11027698

This PI Communications information on an alternative product dealers can use to perform 19-NA-255: Wax Coating on Frame Peeling, Metal Shows Corrosion/Rusting due to issue with getting product from current supplier listed in the bulletin.

TSB #11027601

This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.

Showing the 8 most recent of 444 technical service bulletins on file with NHTSA.

20260420Component: ELECTRICAL SYSTEM

Recall N192265660 repair failed. Dealer stated that GM refused to participate in the repair. Smoke and smell of burning electrical followed by the rear window exploding. Dealer quo

20260115Component: ELECTRICAL SYSTEM

I’ve heard all the horror stories about faulty electrical issues. I’m chasing an issue now on my 2018 with ONLY 87,000 miles after spending a bunch of money on batteries hub as

20260115Component: STEERING

I’ve heard all the horror stories about faulty electrical issues. I’m chasing an issue now on my 2018 with ONLY 87,000 miles after spending a bunch of money on batteries hub as

20260115Component: FORWARD COLLISION AVOIDANCE: WARNINGS

I’ve heard all the horror stories about faulty electrical issues. I’m chasing an issue now on my 2018 with ONLY 87,000 miles after spending a bunch of money on batteries hub as

Showing the 4 most serious of 27 complaints filed with NHTSA.

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