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Fitment notes: High-performance AGM battery required; located in trunk
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Every control module on the 2022-2026 Cadillac CT5-V Blackwing — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
📍 Rear differential housing, integrated with differential assembly
🔧 GM Techline Connect + MDI2
⚠️ Electronic limited slip rear differential; requires differential fluid service and clutch pack calibration; performance-critical component
Body Control Module (BCM)2.0 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Behind instrument panel, center stack area, above center console
🔧 GM Techline Connect + MDI2
⚠️ Controls all body functions, lighting, and accessory power; requires full vehicle configuration programming including VIN, options, and all accessory relearns
📍 Under driver and passenger seats, mounted to seat frame
🔧 Autel MaxiSys or GM MDI2
⚠️ Performance seats with memory and heating/ventilation; requires seat position calibration and memory relearn
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2025 Cadillac CT5-V Blackwing 6.2L Supercharged V8 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years.