Engine Mechanical:
        
        
            Engine assembly, cylinder heads, crankshaft, connecting rods, pistons, timing systems, oil pump, lubrication system.
        
     
    
        
            Engine Management:
        
        
            Fuel injection system, ignition system, emissions control, engine sensors, ECU diagnostics and programming.
        
     
    
        
            Transmission Manual:
        
        
            Clutch, gearbox internal components, shifter mechanisms, transmission fluid.
        
     
    
        
            Transmission Automatic:
        
        
            Torque converter, valve body, planetary gear sets, transmission control module (TCM), transmission fluid and cooling.
        
     
    
        
            Drivetrain:
        
        
            Front-wheel drive components, driveshafts, CV joints, differentials, rear-wheel drive components (if applicable to specific Calais variants).
        
     
    
        
            Suspension:
        
        
            Front and rear suspension systems, shock absorbers, struts, springs, control arms, bushings, steering knuckle, sway bars.
        
     
    
        
            Steering:
        
        
            Power steering system (hydraulic or electric), steering column, steering rack, tie rods, power steering fluid.
        
     
    
        
            Brakes:
        
        
            Brake system components (discs, pads, calipers, master cylinder, brake lines), ABS system, parking brake, brake fluid.
        
     
    
        
            Electrical System:
        
        
            Battery, charging system (alternator), starting system (starter motor), lighting (headlights, taillights, interior), wiring diagrams, fuses, relays.
        
     
    
        
            Body And Chassis:
        
        
            Body panels, doors, hood, trunk, glass, interior trim, chassis components, corrosion protection.
        
     
    
        
            HVAC:
        
        
            Heating, ventilation, and air conditioning (HVAC) system, refrigerant, blower motor, climate control module.
        
     
    
        
            Infotainment And Electronics:
        
        
            Audio system, navigation, climate control interfaces, instrument cluster, body control module (BCM).
        
     
    
    
        
            Scheduled Maintenance:
        
        
            Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspections and replacement.
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic procedures for common faults, symptom-based troubleshooting guides, error code interpretations.
        
     
    
        
            Repair And Rebuild:
        
        
            Detailed step-by-step instructions for component removal, installation, and overhaul (e.g., engine rebuild, transmission overhaul).
        
     
    
        
            Component Replacement:
        
        
            Replacement of individual parts such as alternators, starters, fuel pumps, radiators, brake components, suspension parts.
        
     
    
        
            Diagnostics:
        
        
            On-board diagnostics (OBD-II) system operation, reading trouble codes, using diagnostic scan tools.
        
     
    
        
            Wiring Diagrams:
        
        
            Comprehensive electrical wiring schematics for all vehicle systems.
        
     
    
        
            Engine Diagnostics:
        
        
            Includes detailed procedures for diagnosing engine performance issues, fuel system faults, emission control problems, and electrical system malfunctions.
        
     
    
        
            Transmission Diagnostics:
        
        
            Covers troubleshooting of automatic transmission shifting problems, electronic control issues, and general performance diagnostics.
        
     
    
        
            Brake Diagnostics:
        
        
            Detailed guides for ABS system faults, brake hydraulic system diagnosis, and parking brake adjustments.
        
     
    
        
            Electrical Troubleshooting:
        
        
            Extensive use of wiring diagrams and diagnostic trees for diagnosing electrical faults across all vehicle systems.
        
     
    
    
        
            Depth:
        
        
            Comprehensive; covers basic maintenance to complex engine and transmission overhauls, including detailed diagnostic procedures and component specifications.
        
     
 
    
    
    
        
            Oil And Filter:
        
        
            Typically every 15,000 km or 12 months, whichever comes first (consult specific owner's manual for exact intervals).
        
     
    
        
            Transmission Fluid:
        
        
            Check at 15,000 km intervals. Replacement interval varies, often around 60,000 - 120,000 km depending on driving conditions and fluid type (e.g., Dexron VI for automatics).
        
     
    
        
            Coolant:
        
        
            Initial change at 5 years or 160,000 km, then every 3 years or 80,000 km thereafter for extended life coolant.
        
     
    
    
        
            Engine Oil:
        
        
            SAE 5W-30 or 10W-30, meeting GM dexos1 specification (check manual for exact API/ILSAC rating and viscosity for specific engine).
        
     
    
        
            Brake Fluid:
        
        
            DOT 3 or DOT 4 brake fluid.
        
     
    
        
            Power Steering Fluid:
        
        
            Refer to owner's manual; often a specific GM fluid or Dexron type for hydraulic systems.
        
     
    
    
        
            Common Wear Items:
        
        
            Suspension components (bushings, ball joints), catalytic converters, ignition coils, water pumps (especially on early models).
        
     
    
        
            Engine Specific:
        
        
            Some early 3.6L V6 SIDI engines experienced timing chain tensioner issues; check for service bulletins. 6.0L V8 can experience AFM/DOD lifter issues if not maintained properly.