Description
Factory GMC Sierra Workshop Manual (2014–2019)
This factory-level repair manual covers the fourth-generation GMC Sierra K2XX platform sold in the United States from 2014 through 2019, spanning both Light Duty and Heavy Duty variants across all cab styles and trim grades from base Fleet models up to the premium Denali.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 4.3L V6 LV1/LV3, 5.3L V8 L83, 6.0L V8 LC8 Flex Fuel, 6.0L V8 L96, 6.2L V8 L86 |
| Diesel | N/A |
| Transmissions | 6-speed automatic 6L50 / 6L80 / 6L90, 8-speed automatic 8L90 |
| Drive | RWD, 4WD |
| Model Years | 2014, 2015, 2016, 2017, 2018, 2019 |
| Badge Twins | Chevrolet Silverado (K2XX platform), Cadillac Escalade EXT (not produced this gen) |
Common Sierra Repairs Covered
| System | Procedures |
|---|---|
| AFM / Cylinder Deactivation (5.3L L83) | Active Fuel Management lifter failure diagnosis, replacement, and oil pressure system service |
| Transfer Case | 4WD encoder motor replacement, transfer case fluid service, and shift control module diagnostics |
| Brake System | Front and rear rotor/pad replacement, ABS module diagnostics, trailer brake controller integration |
| Electrical / BCM | Body Control Module programming, wiring diagram navigation, connector pinout identification for lighting and accessory circuits |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Is the AFM lifter failure issue on the 5.3L L83 covered in this manual?
Yes. The Active Fuel Management system on the 5.3L L83 EcoTec3 is one of the most frequently reported issues on 2014–2019 Sierra 1500 trucks. The manual includes full diagnostic trees for AFM-related oil consumption and lifter collapse, plus step-by-step disassembly and rebuild procedures for the valvetrain.
Does this manual cover both the 1500 and heavy-duty 2500HD/3500HD Sierra models?
Yes. All three payload ratings are covered under the K2XX platform umbrella — Regular Cab, Double Cab, and Crew Cab body styles included. Trim coverage runs from base Fleet and SLE grades through SLT and Denali on both Light Duty and Heavy Duty configurations.
Are complete wiring diagrams and electrical schematics included?
Yes. The electrical section provides full circuit diagrams for engine management (ECM), transmission control (TCM), ABS/StabiliTrak, airbag system, trailer wiring, lighting, and infotainment. Connector pinouts, wire color codes, and ground locations are documented throughout.
What format is the manual?
This manual is a PDF file delivered via instant download immediately after purchase. It is fully searchable, works on any device with a PDF reader — Windows, Mac, Linux, iOS, or Android — and individual pages can be printed for shop use. Re-downloads are available for life.
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