2018 Chevrolet Suburban 3500 HD Service and Repair Manual

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Factory-Grade Data

2018 Chevrolet Suburban 3500 HD 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

  • LS Sport Utility 4-Door
  • LT Sport Utility 4-Door

Engines covered

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

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Payment methods

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  • Apple Pay
  • Bancontact
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Union Pay
  • Visa

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Vehicle Safety Data

2018 Chevrolet Suburban 3500 HD Recalls & Complaints

NHTSA #19V76100024/10/2019Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED

General Motors LLC (GM) is recalling certain 2015-2020 Chevrolet Suburban, Tahoe, and GMC Yukon, and 2014-2018 Chevrolet Silverado 1500 and GMC Sierra 1500 vehicles equipped with a

Consequence

Unintended activation of the driveline-protection system will cause unintended braking on

Remedy

GM will notify owners, and dealers will reprogram the EBCM, free of charge. The recall be

NHTSA #26V28900007/05/2026Component: POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)

General Motors, LLC (GM) is recalling certain 2026 Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500, Suburban, and Tahoe, and GMC Sierra 1500, Yukon, and Yukon XL vehic

Consequence

Front or rear wheel lockup increases the risk of a crash.

Remedy

Owners are advised not to drive their vehicle until the remedy is completed. Dealers will

NHTSA #19V64500006/09/2019Component: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM

General Motors LLC (GM) is recalling certain 2015-2017 Cadillac Escalade, 2014-2018 Chevrolet Silverado, GMC Sierra, 2015-2018 Chevrolet Suburban, Tahoe, GMC Yukon vehicles. The a

Consequence

As the vacuum level drops, the brake assist decreases, increasing braking effort, extendin

Remedy

GM will notify owners, and dealers will reprogram the Electronic Brake Control Module, fre

No service bulletins No technical service bulletins on file with NHTSA for the 2018 Chevrolet Suburban 3500 HD.
20190701Component: AIR BAGSCrash reported2 injured

INVOLVED IN A SERIOUS FRONT END COLLISION AND AIRBAGS DID NOT DEPLOY. HIT BETWEEN FRONT WHEEL AND FRONT BUMPER. WAS LEAVING A STOP SIGN WHEN HIT. VEHICLE THAT HIT ME WAS GOING AT L

20180423Component: AIR BAGSCrash reported2 injured

TL* THE CONTACT OWNS A 2018 CHEVROLET SUBURBAN. WHILE DRIVING 75 MPH, A VEHICLE CRASHED INTO A GUARDRAIL AND BOUNCED BACK ONTO THE ROADWAY. AS A RESULT, THE CONTACT CRASHED INTO TH

20191205Component: POWER TRAINCrash reported

VEHICLE WAS PARKED AND ENGINE OFF AND KIDS WERE GETTING INTO CAR WHEN ONE OF THE KIDS PULLED IN THE SHIFTER AND SHIFTED THE VEHICLE INTO GEAR. THE VEHICLE BEGAN TO ROLL. THE SUBUR

20260515Component: POWER TRAIN

My husband was driving our 2018 Chevy Suburban when it suddenly stopped accelerating and he could no longer shift gears. Luckily, this happened while he was driving down a gravel

Showing the 4 most serious of 110 complaints filed with NHTSA.

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