🌍 International coverage, work in progress. This European-market vehicle is part of our hand-curated international catalog. We are filling in labor times, torque specs and fluids as fast as we can verify them, so some numbers may be missing or marked estimated for now. Do you work on these vehicles in the EU, Russia, or the JDM scene? Help us get it right: send real shop times or corrections to [email protected], or request the data you need and it joins the verification queue.

2026 CADILLAC CT4-V BLACKWING

3.6L Twin-Turbo V6RWDAUTOMATICgassupercharged
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Dead battery / stuck in Park? Emergency neutral procedure for this CT4-V Blackwing
Every control module on the 2022-2026 Cadillac CT4-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.
Transmission Control Module (TCM)3.5 hr R&Rsecurity gateway +1.2 hr▸ programming details
📍 Integrated into 10-speed automatic transmission (10L90) valve body, accessed from underneath vehicle
🔧 GM Techline Connect + MDI2
⚠️ Requires transmission pan removal, fluid drain. VIN programming, adaptive shift relearn, and security gateway unlock mandatory. Transmission fluid replacement adds 0.5 hr.
Electric Power Steering Control Module (EPSCM)2.8 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Integrated into steering column assembly, accessed from under instrument panel
🔧 GM Techline Connect + MDI2
⚠️ V-Series specific tuning. Requires steering angle sensor calibration, VIN programming, and security gateway unlock. Steering wheel removal required.
Electronic Brake Control Module (EBCM)2.5 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Engine compartment, driver side, mounted to brake modulator assembly near master cylinder
🔧 GM Techline Connect + MDI2
⚠️ Integrated with Brembo brake system on Blackwing. Requires brake bleed, VIN programming, and Performance Traction Management (PTM) calibration. Brake fluid service adds 0.5 hr.
Body Control Module (BCM)2.0 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Behind instrument panel, driver side, above fuse block near steering column
🔧 GM Techline Connect + MDI2
⚠️ Controls all body functions, lighting, keyless entry. Requires VIN programming, security gateway unlock, and configuration of all option content. Key fob relearn required.
Heating, Ventilation and Air Conditioning Control Module (HVAC)1.8 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Behind instrument panel, center stack area, integrated with climate control head unit
🔧 GM Techline Connect + MDI2
⚠️ Dual-zone automatic climate control. Requires configuration programming and actuator relearn.
Gateway Module (GM)1.8 hr R&Rsecurity gateway +1.5 hr▸ programming details
📍 Behind instrument panel, driver side, near BCM or integrated with BCM
🔧 GM Techline Connect + MDI2
⚠️ Security gateway enforces access control. Replacement requires VIN programming, security unlock, and reconfiguration of all network modules. Critical for security.
Front/Rear Radar Sensor Module (RSM)1.8 hr R&Rsecurity gateway +1.2 hr▸ programming details
📍 Behind front grille (front radar) and behind rear bumper (rear radar)
🔧 GM Techline Connect + MDI2
⚠️ Adaptive cruise control and collision alert. Requires VIN programming, security gateway unlock, and radar aiming/calibration. Alignment critical.
Magnetic Ride Control Module (MRCM)1.5 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Rear cargo area, driver side, mounted to body or integrated with rear suspension
🔧 GM Techline Connect + MDI2
⚠️ Magnetic Ride Control 4.0 with V-Mode performance tuning. Requires VIN programming and damper calibration. Critical for Blackwing performance.
Surround Vision Camera Module (SVCM)1.5 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Behind instrument panel, center, near radio module, or rear cargo area
🔧 GM Techline Connect + MDI2
⚠️ Surround vision with front/rear/side cameras. Requires VIN programming and camera calibration. Multiple camera inputs.
Sensing and Diagnostic Module (SDM)1.5 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Center console area, under front center armrest or beneath driver seat
🔧 GM Techline Connect + MDI2
⚠️ Requires VIN programming and crash data clear. Must disable SIR system before removal. Security gateway unlock required.
Fuel Pump Control Module (FPCM)1.5 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Rear of vehicle, above or adjacent to fuel tank, driver side frame rail
🔧 GM Techline Connect + MDI2
⚠️ High-performance fuel system for twin-turbo V6. Requires configuration programming and fuel system prime procedure.
Infotainment Control Module (ICM)1.5 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Behind center stack touchscreen display, accessed from instrument panel center
🔧 GM Techline Connect + MDI2
⚠️ 8-inch or 10-inch touchscreen with Cadillac User Experience. Requires VIN programming, feature configuration, and OnStar/SiriusXM activation.
Parking Assist Control Module (PACM)1.3 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Rear cargo area, behind rear bumper or under rear seat area
🔧 GM Techline Connect + MDI2
⚠️ Ultrasonic parking sensors front and rear. Requires configuration programming and sensor calibration.
OnStar Vehicle Communication Interface Module (VCIM)1.3 hr R&Rdealer / factory tool +0.8 hr▸ programming details
📍 Behind instrument panel, center or passenger side, near radio module
🔧 GM Techline Connect + MDI2
⚠️ 4G LTE connectivity. Requires OnStar account activation, VIN programming, and cellular network provisioning through GM.
Engine Control Module (ECM)1.2 hr R&Rsecurity gateway +1.0 hr▸ programming details
📍 Engine compartment, driver side firewall area, mounted to intake manifold or adjacent bracket
🔧 GM Techline Connect + MDI2
⚠️ LF4 3.6L twin-turbo V6 requires VIN programming, security gateway unlock, and throttle/fuel system relearn. Turbo calibration critical.
Instrument Panel Cluster (IPC)1.2 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Instrument panel, behind gauge cluster lens, driver side
🔧 GM Techline Connect + MDI2
⚠️ 12-inch digital reconfigurable cluster. Requires VIN programming, mileage transfer, and security gateway unlock. Mileage must match vehicle records.
Door Control Module (DCM)1.2 hr R&Rrelearn only +0.3 hr▸ programming details
📍 Inside each door, behind door panel near latch assembly
🔧 GM Techline Connect or Autel MaxiSys
⚠️ Controls power windows, locks, mirrors. Four modules (one per door). Window auto-up/down relearn required after replacement.
Headlamp Control Module (HCM)1.0 hr R&Raftermarket tool +0.3 hr▸ programming details
📍 Behind front bumper, driver side headlamp assembly or integrated into headlamp
🔧 Autel MaxiSys or GM Techline Connect
⚠️ LED headlamps with automatic high beam. Basic relearn possible with aftermarket tools; full feature programming may require dealer tool.
Remote Control Door Lock Receiver (RCDLR)1.0 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Behind instrument panel, center or driver side, near BCM
🔧 GM Techline Connect + MDI2
⚠️ Passive entry/push-button start. Requires VIN programming, key fob relearn, and security gateway unlock. All fobs must be reprogrammed.
Launch Control Module (LCM)1.0 hr R&Rsecurity gateway +0.8 hr▸ programming details
📍 Integrated into ECM or separate module in engine compartment
🔧 GM Techline Connect + MDI2
⚠️ V-Series launch control and performance features. May be integrated into ECM; requires VIN programming and performance calibration if separate.
Seat Control Module (SCM)0.8 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Under driver and passenger front seats, mounted to seat frame
🔧 GM Techline Connect or Autel MaxiSys
⚠️ Power seats with memory and heating/ventilation. Typically auto-configures; memory relearn may be required. Two modules (driver/passenger).
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.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years.
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