Vehicle Class:
Luxury Sports Roadster
Target Audience:
Owners seeking to perform their own maintenance and repairs on a high-performance luxury vehicle.
Competitors:
Porsche Boxster, Mercedes-Benz SLK, BMW Z4, Jaguar XK
Unique Selling Points:
Licensed OE data, comprehensive system coverage, accessible via modern devices, cost savings compared to dealer repairs.
Manual Advantage:
Provides factory-level repair information, essential for complex systems unique to the XLR.
Primary Coverage:
Service and Repair
Secondary Coverage:
Maintenance, Diagnostics, Troubleshooting, Wiring Diagrams, Specifications
Estimated Page Count:
Extensive (Digital, equivalent to several thousand printed pages)
Type:
Official Licensed Service Manual Software
Format:
Online Software/Web-based Access
Engine Mechanical:
Full coverage including disassembly, assembly, diagnostics, and repair procedures for the Northstar V8 engine.
Engine Electrical:
Detailed wiring diagrams, component testing, ignition system, fuel injection system, and emissions control systems.
Transmission:
Service and repair for the 4-speed automatic transmission (4T80-E), including diagnostics and fluid specifications.
Drivetrain:
Front-wheel drive system, including axle shafts, differential, and related components.
Suspension:
Front and rear suspension systems, including adaptive ride control (Magnetic Ride Control), components, alignment, and troubleshooting.
Steering:
Power steering system, steering column, and steering gear diagnostics and repair.
Brakes:
Hydraulic brake system, ABS, traction control, and performance brake component service.
Body And Frame:
Body panel removal and installation, convertible top system service, chassis and frame repair.
HVAC:
Heating, ventilation, and air conditioning system service, including refrigerant handling and component diagnostics.
Electrical And Electronics:
Comprehensive coverage of all electrical systems, including lighting, power accessories, body control modules (BCM), and infotainment.
Instrumentation And Gauges:
Dashboard, instrument cluster, and gauge diagnostics and repair.
Routine Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, tire rotations, and spark plug replacement.
Troubleshooting:
Systematic diagnostic procedures for common and complex issues, including diagnostic trouble codes (DTCs).
Repair Procedures:
Step-by-step instructions for component removal, installation, and repair for all major systems.
Diagnostics:
Detailed diagnostic trees and procedures utilizing GM's diagnostic tools and protocols.
Specifications:
Torque specifications, clearances, tolerances, and fluid capacities for all components.
Wiring Diagrams:
Complete and detailed electrical wiring diagrams for all vehicle systems.
Depth:
Comprehensive, from basic maintenance to in-depth engine and transmission overhauls, electrical diagnostics, and body control module programming.
Engine Code:
LH2 (4.6L Northstar V8)
Displacement:
4.6 Liters (281 cubic inches)
Configuration:
DOHC 32-valve V8
Horsepower:
320 hp @ 6400 rpm
Torque:
310 lb-ft @ 4400 rpm
Induction Type:
Sequential Electronic Fuel Injection (SEFI)
Fuel Type:
Premium Unleaded Gasoline (91 octane or higher recommended)
Engine Oil Type:
SAE 0W-30 Synthetic (API SM or higher, GM dexos1™ approved)
Engine Oil Capacity:
5.5 quarts (5.2 liters) with filter change
Bore X Stroke:
3.31 x 3.54 inches (84.0 x 90.0 mm)
Compression Ratio:
10.0:1
NHTSA Front Crash Test:
5-Star (for driver and passenger)
ABS:
Standard Anti-lock Braking System (ABS)
Traction Control:
Standard Traction Control System (TCS)
Stability Control:
Standard StabiliTrak Electronic Stability Control
Airbags:
Driver and passenger front airbags, side-impact airbags, head curtain airbags.
Seatbelts:
Three-point safety belts with pretensioners and load limiters.
Audio System:
Bose premium audio system with CD player and AM/FM radio. Navigation system optional.
Connectivity:
OnStar telematics system (subscription-based).
Display:
7-inch color touchscreen for infotainment and climate control.
Keyless Entry:
Keyless Access with push-button start.
Adaptive Cruise Control:
Optional Adaptive Cruise Control (ACC)
Parking Assist:
Optional Rear Parking Assist
Magnetic Ride Control:
Advanced adaptive suspension system with real-time damping adjustments.
Oil Change Interval:
Every 7,500 miles or 12 months, whichever comes first, under normal driving conditions. Severe conditions may require shorter intervals.
Engine Air Filter:
Inspect every 15,000 miles, replace as needed. Recommended replacement every 30,000 miles.
Cabin Air Filter:
Inspect every 15,000 miles, replace as needed. Recommended replacement every 24,000 miles or annually.
Spark Plugs:
Replace every 100,000 miles (original equipment are long-life iridium plugs).
Transmission Fluid:
Inspect every 30,000 miles. Fluid and filter change recommended every 60,000 to 100,000 miles, or as indicated by the vehicle's oil life monitor.
Coolant Type:
GM P/N 12346290, Extended Life (50/50 mix of Dex-Cool and distilled water recommended)
Brake Fluid Type:
DOT 3 or DOT 4 (as per manufacturer recommendation)
Power Steering Fluid:
GM P/N 12345478 or equivalent Dexron III/VI ATF
Common Problems:
Convertible top hydraulic leaks/failures, suspension component wear (especially front control arms), occasional Northstar engine oil consumption, infotainment system glitches.
Cadillac Legacy:
Cadillac, a historic American luxury marque, known for innovation and premium comfort.
Xlr Concept:
Based on the Evoq concept car, the XLR was Cadillac's re-entry into the luxury roadster market after decades.
Platform:
Shared platform with the Chevrolet Corvette C6 (internally related, distinct chassis tuning).
Manufacturing Location:
Bowling Green, Kentucky, USA
Production Years:
2004-2009
