Haynes Compatible for GMC Sierra 2500/3500 (2014–2019) Repair Manual: Covers 6.0L LC8, 6.0L L96 Gas & 6.6L LML/L5P Diesel Engines – Maintenance, Wiring, Troubleshooting & Step-by-Step DIY Repairs

Keep your GMC Sierra 2500/3500 (2014–2019) running at its best with the Haynes Repair Manual—trusted by millions of DIYers worldwide. Whether you’re changing fluids, replacing brakes, or tackling advanced repairs, this manual provides clear, step-by-step guidance backed by hundreds of detailed photos and illustrations.Models covered include both gasoline and diesel options: 6.0L LC8, 6.0L L96, 6.6L LML, and 6.6L L5P engines. Alongside in-depth repair procedures for the engine, transmission, and drivetrain, the manual also features complete coverage of electrical systems, body components, suspension, and brakes.Plus, with included digital access, you’ll unlock enhanced content such as interactive wiring diagrams, guided diagnostics, and up-to-date service data—accessible anytime from your computer, tablet, or smartphone.With over 60 years of expertise, Haynes helps you save money, gain confidence, and keep your Sierra safe and reliable for years to come. Table of Contents Jacking and LiftingBuying PartsBooster Battery (Jump) StartingKey Fob Battery ReplacementLubricants, Fluids, and Tire PressuresTroubleshootingAcronymsChapter 1A – Routine Maintenance and Servicing (Gasoline Models)Chapter 1B – Routine Maintenance and Servicing (Diesel Models)Chapter 2A – Gasoline Engine Repair ProceduresChapter 2B – LML Diesel Engine Repair ProceduresChapter 2C – L5P Diesel Engine Repair ProceduresChapter 3 – Cooling, Heating, and Air Conditioning SystemsChapter 4A – Fuel and Exhaust (Gasoline Engines)Chapter 4B – Fuel and Exhaust (LML Diesel Engines)Chapter 4C – Fuel and Exhaust (L5P Diesel Engines)Chapter 4D – Emission Control (Gasoline Engines)Chapter 4E – Emission Control (LML Diesel Engines)Chapter 4F – Emission Control (L5P Diesel Engines)Chapter 5A – Starting and Charging SystemsChapter 5B – Ignition System (Gasoline Engines)Chapter 5C – Pre-Heating System (Diesel Engines)Chapter 6 – ClutchChapter 7A – Manual TransmissionChapter 7B – Automatic TransmissionChapter 7C – Transfer CaseChapter 8 – Driveshafts, Driveaxles and AxlesChapter 9 – Braking SystemChapter 10 – Suspension and Steering SystemsChapter 11 – Bodywork and FittingsChapter 12 – Body Electrical SystemChapter 13 – Wiring DiagramsIndex

• Models Covered: GMC Sierra 2500 & 3500 (2014–2019) – Includes 6.0L LC8 gas, 6.0L L96 gas, 6.6L LML diesel, and 6.6L L5P diesel engines.
• Print + Digital Access: Includes access to enhanced online repair content with wiring diagrams, system diagnostics, and updated service data.
• Step-by-Step DIY Instructions: Guides you through basic and advanced repairs—from routine servicing to full engine, transmission, and electrical work.
• Full-Color Visuals: High-resolution images and diagrams simplify complex repairs by clearly showing components and tool placement.
• Cost-Saving Tool: Perform your own repairs to avoid costly labor charges and keep your XT5 running smoothly and reliably for years to come.