Fitment notes: Auxiliary 12V battery; electric vehicle with dual motor configuration
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Every control module on the 2024-2026 Cadillac Celestiq — 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.
Battery Energy Control Module (BECM)2.5 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Ultium battery pack, center tunnel
🔧 GM Techline Connect + SGW unlock
⚠️ Controls 111 kWh Ultium battery; requires high-voltage safety lockout and battery management system calibration
Heating, Ventilation and Air Conditioning Control Module (HVAC)2.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Behind instrument panel, center stack
🔧 GM Techline Connect
⚠️ Five-zone climate control with individual rear seat controls; heat pump system for EV efficiency
Electric Power Steering Control Module (EPSCM)1.8 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Steering column, upper section
🔧 GM Techline Connect + SGW unlock
⚠️ Active steering with road-sensing; requires steering angle sensor calibration
⚠️ Dual wireless charging pads front and rear; requires foreign object detection calibration
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 2026 Cadillac Celestiq Dual Motor AWD and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.