The Cadillac XLR, produced for the 2004 through 2009 model years, represents Cadillac's foray into the luxury sports roadster segment, built upon the GM Kappa platform. This sophisticated vehicle, available in both standard and high-performance XLR-V variants, is distinguished by its retractable hardtop, sculpted design, and advanced technology, including Magnetic Ride Control and a Head-Up Display. Engineered with powerful V8 engines, ranging from the naturally aspirated 4.6-liter Northstar to the supercharged 6.0-liter unit in the XLR-V, it offers a blend of exhilarating performance and refined luxury, positioning itself against prestigious competitors in the personal luxury car market. This comprehensive workshop service repair manual provides detailed coverage for the Cadillac XLR and XLR-V models. It encompasses complete engine overhaul, diagnosis, and repair for both the standard and supercharged V8 engines, as well as automatic and manual transmission services. The manual offers in-depth guidance on electrical systems, suspension, steering, brake systems, body and chassis work, HVAC, comfort and convenience features, and restraint systems. With step-by-step troubleshooting guides, diagnostic procedures, and technical specifications, this resource is designed to assist owners and technicians in maintaining, diagnosing, and repairing the vehicle effectively, ensuring optimal performance and longevity.