Description
Factory GMC Terrain Workshop Manual (2018–2022)
This factory-level repair manual covers the second-generation GMC Terrain sold in the US market from 2018 through 2022, giving technicians and DIYers complete service procedures, wiring diagrams, and torque specifications for every major system on the vehicle.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 1.5L LYX Turbocharged 4-cyl, 2.0L LTG Turbocharged 4-cyl |
| Diesel | 1.6L LH7 Turbodiesel 4-cyl |
| Transmissions | 9-speed 9T45 automatic, 9-speed 9T50 automatic, 6-speed 6T45 automatic |
| Drive | FWD, AWD |
| Model Years | 2018, 2019, 2020, 2021, 2022 |
| Badge Twins | Chevrolet Equinox (D2XX platform), Holden Equinox |
Common Terrain Repairs Covered
| System | Procedures |
|---|---|
| 1.5L LYX Engine Oil Consumption | Piston ring inspection, PCV valve replacement, oil consumption diagnostic procedure |
| 9T45/9T50 Transmission Shudder | Torque converter clutch diagnosis, transmission fluid flush, TCM reprogramming procedure |
| Turbocharger & Intercooler | Boost leak testing, intercooler hose inspection, turbo actuator calibration |
| Brake System | Front and rear pad/rotor replacement, electronic parking brake service, ABS module diagnostics |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Does the 1.5L LYX engine have a known oil consumption issue?
Yes. Early 2018–2019 Terrain models equipped with the 1.5L LYX turbocharged engine were subject to excessive oil consumption complaints. The manual includes GM’s diagnostic procedure for measuring consumption, piston ring inspection steps, and PCV system service guidance to address this issue correctly.
Is the GMC Terrain related to the Chevrolet Equinox?
Yes. Both the second-generation GMC Terrain and the Chevrolet Equinox share GM’s D2XX compact crossover platform. They use identical powertrain combinations — including the 1.5L LYX, 2.0L LTG, and 1.6L LH7 engines — so much of the mechanical service content applies across both nameplates.
Are wiring diagrams and electrical schematics included?
Yes. The manual contains full electrical system documentation including engine management wiring, BCM circuits, CAN bus network diagrams, fuse and relay charts, connector pinouts, and airbag/stability control schematics for all 2018–2022 model years.
What format is the manual?
This manual is a PDF file. After purchase you receive an instant download link and can re-download at any time. The document is fully searchable and compatible with Windows, Mac, iOS, Android, and any device running a standard PDF reader.
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