Segment:
Small family car, compact sedan and hatchback.
Competitors Australia 2012:
Toyota Corolla, Mazda3, Hyundai i30, Ford Focus, Mitsubishi Lancer.
Vehicle Focus:
The Holden Cruze (JG/JH) was positioned as a stylish, well-equipped, and value-oriented competitor in the highly contested Australian compact car market, offering a range of engine and transmission options.
Manual Purpose:
This workshop manual is designed for professional technicians and DIY enthusiasts, providing the necessary technical information to perform all maintenance, servicing, troubleshooting, and repair operations on the 2012 Holden Cruze.
Strengths Vs Competitors:
Often praised for its European-influenced styling (derived from Opel design) and solid chassis dynamics compared to some of its more conservatively styled rivals.
Mechanical Systems:
Engine mechanical, fuel system, cooling system, exhaust system, lubrication system, ignition system, engine control systems (ECM/PCM), manual and automatic transmissions, clutch, driveline, axles, suspension (front and rear), steering system, brake system (front and rear), ABS, traction control.
Electrical Systems:
12V battery system, charging system (alternator), starting system, lighting (headlights, taillights, interior), instrument cluster, dashboard controls, power windows, power locks, mirrors, wipers, horn, audio system, climate control electronics, body control module (BCM), powertrain control module (PCM), anti-theft system, airbag system (SRS), fuse boxes, relay locations, wiring diagrams.
Body And Interior:
Body panel removal and installation, door mechanisms, interior trim components, dashboard, seats, headliner, glass replacement, seal replacement, rust prevention and repair, chassis lubrication, underbody protection.
Powertrain Control:
Engine Control Module (ECM) and Powertrain Control Module (PCM) operation, sensor inputs, actuator outputs, emissions control systems, diagnostic strategies.
Maintenance:
Scheduled maintenance, oil changes, filter replacements (oil, air, fuel, cabin), spark plug replacement, fluid level checks and top-offs, brake pad and rotor replacement, tire rotation and balancing, battery testing and replacement.
Repair And Overhaul:
Engine overhaul (head gasket, piston rings, bearings), transmission overhaul, clutch replacement, brake caliper and master cylinder repair, suspension component replacement (shocks, struts, bushings, ball joints), steering rack replacement, exhaust system repair, cooling system component replacement (radiator, water pump, thermostat), electrical component diagnosis and replacement.
Diagnostics And Troubleshooting:
Fault code diagnosis (OBD-II), symptom-based troubleshooting guides, electrical circuit testing, mechanical component testing, diagnostic tool usage.
Diagnostic Tools Usage:
Guidance on using General Motors' diagnostic scan tools (e.g., Tech 2 or later equivalents) and understanding diagnostic trouble codes (DTCs).
Wheel And Tire:
Tire pressure monitoring system (TPMS) calibration, wheel bearing replacement, tire and wheel specifications, lug nut torque values.
Depth Of Information:
Comprehensive, covering everything from routine maintenance and inspections to complete engine and transmission rebuilds, electrical system diagnostics, and body repair procedures. Includes torque specifications, diagnostic procedures, wiring diagrams, and special tool requirements.
Wiring Diagrams:
Detailed, system-specific wiring diagrams for all major electrical components and circuits, including power distribution, grounds, and signal paths.
Torque Specifications:
Precise torque values for critical fasteners across all mechanical systems, ensuring correct assembly and preventing component damage.
Special Tools:
Listing and explanation of specific tools required for certain repair procedures, such as engine timing tools, suspension alignment tools, or specialized electrical diagnostic equipment.
Digital Format Details:
Typically PDF format, optimized for digital viewing and printing. May include bookmarking for easy navigation and searchable text for quick information retrieval.
Searchability:
High-quality PDF documents often feature OCR (Optical Character Recognition) for full text searchability, allowing users to quickly find specific terms or procedures.
Printability:
Designed for clear printing of text, diagrams, and illustrations. High resolution ensures legibility of technical drawings and schematics.
Illustration Clarity:
Clear and detailed illustrations, diagrams, and exploded views to aid in component identification and assembly/disassembly processes.
Digital Binding Equivalent:
N/A (Digital format, no physical binding)
Digital Paper Equivalent:
N/A (Digital format, no physical paper type)
Digital Readability:
Optimized for viewing on various devices, including desktop computers, laptops, tablets, and smartphones. May include zoom functionality for detailed schematics.
Engine Options 2012:
1.8L naturally aspirated (LDE/CDV) and 1.4L turbocharged (LUJ/A14NET) Ecotec petrol engines. Diesel options may also be available depending on market.
1.8L Engine (Typical):
Approx. 104 kW (139 hp) @ 6300 rpm, 176 Nm (130 lb-ft) @ 3800 rpm.
1.4L Turbo Engine (Typical):
Approx. 103 kW (138 hp) @ 4900-6000 rpm, 200 Nm (148 lb-ft) @ 1850-4900 rpm.
2.0L Diesel Engine (Typical):
Approx. 93 kW (125 hp) @ 4000 rpm, 320 Nm (236 lb-ft) @ 1750-2600 rpm.
Injection Type:
Electronic Multi-Point Fuel Injection (MPI) for 1.8L, Direct Injection (DI) for 1.4L Turbo.
Engine Code Example 1.8L:
LDE
Engine Code Example 1.4L Turbo:
LUJ
Engine Code Example Diesel:
A20DTC / LUZ (2.0L Turbo Diesel - if applicable for the specific market manual)
1.8L Timing Drive:
Timing Chain
1.4L Turbo Timing Drive:
Timing Chain
Manual Transmission Options:
5-speed manual (M24) for 1.8L, 6-speed manual (MH7) for 1.4L Turbo.
Automatic Transmission Options:
6-speed automatic (6T40/6T45) available for both 1.8L and 1.4L Turbo variants.
Automatic Transmission Features:
Tiptronic style driver shift control for manual selection of gears.
Automatic Transmission Fluid:
Dexron VI (or equivalent GM specification).
Manual Transmission Fluid:
GM P/N 88862425 (or equivalent API GL-4 specification).
Infotainment System:
Holden's integrated audio system with CD player, MP3 compatibility, auxiliary input, and potentially Bluetooth connectivity and steering wheel audio controls on higher trim levels.
Instrument Cluster:
Analogue gauges for speed, RPM, fuel, and temperature, with a multi-function display for trip computer, odometer, and warning lights.
Cruise Control:
Standard or optional depending on trim level.
Parking Assistance:
Rear parking sensors were optional on many models.
Bluetooth:
Available on mid-to-higher spec models for hands-free calling and audio streaming.
Oil Change Interval:
Typically every 15,000 km or 12 months, whichever comes first. Check specific model recommendations.
Major Service Interval:
Refer to the manual for detailed intervals for spark plug replacement, brake fluid change, coolant flush, etc. (e.g., 60,000 km or 48 months).
Engine Oil Specification:
SAE 5W-30, GM dexos1™ or equivalent API SN, ILSAC GF-5 certified synthetic oil.
Coolant Specification:
GM P/N 12378390 (or equivalent orange coloured OAT coolant) - typically a 50/50 mix with demineralized water.
Brake Fluid Specification:
DOT 4 LV (Low Viscosity).
Power Steering Fluid:
GM P/N 19299149 (or equivalent Dexron VI ATF).
Common Problems 1.4T:
Turbocharger issues (oil leaks, wastegate actuator problems), coolant leaks from thermostat housing, potential for intake manifold carbon buildup.
Common Problems 1.8L:
Occasional water pump leaks, ignition coil failures, thermostat issues.
General Issues:
Rear drum brake wear on some models, power steering pump noise, electrical gremlins related to body control modules.
