Every control module on the 2020-2026 Cadillac XT5 — 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) 2.5 hr R&R security gateway +1.0 hr ▸ programming details
📍 Integrated into transmission valve body, accessed from underneath vehicle
🔧 Techline Connect with Security Access
⚠️ Requires transmission fluid drain; adaptive learning reset and security gateway unlock required
Electric Power Steering Control Module (EPSCM) 2.0 hr R&R dealer / factory tool +0.6 hr ▸ programming details
📍 Integrated with steering column assembly or mounted to steering gear
🔧 Techline Connect
⚠️ Steering angle sensor calibration required after replacement
Electronic Brake Control Module (EBCM) 1.8 hr R&R dealer / factory tool +0.6 hr ▸ programming details
📍 Engine compartment, driver side near brake master cylinder or ABS pump assembly
🔧 Techline Connect
⚠️ Brake bleeding required after replacement; integrated with ABS pump
Heating, Ventilation and Air Conditioning Control Module (HVAC) 1.8 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Behind center stack, integrated with HVAC control panel or behind dash
🔧 Techline Connect
⚠️ Dual-zone or tri-zone depending on trim; may require actuator calibration
Body Control Module (BCM) 1.5 hr R&R security gateway +1.2 hr ▸ programming details
📍 Behind center console, below HVAC controls, or behind glove box
🔧 Techline Connect with Security Access
⚠️ Controls most body functions; requires full vehicle configuration programming and security unlock
Infotainment Control Module (ICM) 1.5 hr R&R dealer / factory tool +0.8 hr ▸ programming details
📍 Behind center touchscreen display in dash
🔧 Techline Connect
⚠️ Updated CUE system or newer infotainment platform; software updates often required
Engine Control Module (ECM) 1.2 hr R&R security gateway +1.0 hr ▸ programming details
📍 Engine compartment, driver side firewall area, mounted to intake manifold or firewall bracket
🔧 Techline Connect with Security Access
⚠️ VIN-locked with enhanced security gateway; requires GM subscription and security unlock
Gateway Module (GM) 1.2 hr R&R security gateway +0.8 hr ▸ programming details
📍 Behind center console or instrument panel, central location
🔧 Techline Connect with Security Access
⚠️ Enhanced security gateway; routes communication between vehicle networks; critical for diagnostics
Rear Seat Entertainment Control Module (RSECM) 1.2 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Under rear seat or behind center console
🔧 Techline Connect
⚠️ Optional equipment; rare on XT5
Transfer Case Control Module (TCCM) 1.2 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Mounted to transfer case or nearby frame rail (AWD models only)
🔧 Techline Connect
⚠️ AWD models only; may require drivetrain relearn
Instrument Panel Cluster (IPC) 1.0 hr R&R security gateway +0.8 hr ▸ programming details
📍 Behind instrument panel, driver side dash
🔧 Techline Connect with Security Access
⚠️ Mileage programming required; VIN-locked with security gateway
Door Control Module (DCM) 1.0 hr R&R aftermarket tool +0.2 hr ▸ programming details
📍 Inside door panel, each door with power features
🔧 Techline Connect or aftermarket scan tool
⚠️ Window auto-up/down relearn may be required
Fuel Pump Control Module (FPCM) 1.0 hr R&R relearn only +0.2 hr ▸ programming details
📍 Mounted to fuel tank or frame rail near tank
🔧 Techline Connect or aftermarket scan tool
⚠️ May require fuel system pressure relief before service
Surround Vision Camera Module (SVCM) 1.0 hr R&R dealer / factory tool +0.6 hr ▸ programming details
📍 Behind rearview mirror or center console area
🔧 Techline Connect
⚠️ Processes multiple camera inputs; calibration required if equipped with 360-degree view
Liftgate Control Module (LGM) 0.8 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Inside liftgate, driver side lower area
🔧 Techline Connect or aftermarket scan tool
⚠️ Power liftgate calibration required; hands-free feature if equipped
Magnetic Ride Control Module (MRCM) 0.8 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Rear cargo area, driver side or under rear seat
🔧 Techline Connect
⚠️ Optional equipment; controls adaptive dampers
Sensing and Diagnostic Module (SDM) 0.8 hr R&R security gateway +0.5 hr ▸ programming details
📍 Center console area, under front seats or center tunnel
🔧 Techline Connect with Security Access
⚠️ Battery disconnect required; wait 2+ minutes before handling; security gateway protection
Headlamp Control Module (HCM) 0.8 hr R&R aftermarket tool +0.3 hr ▸ programming details
📍 Behind headlamp assembly or in engine compartment near headlamps
🔧 Techline Connect or Autel MaxiSys
⚠️ Separate modules for left/right; adaptive headlamp calibration if equipped
Parking Assist Control Module (PACM) 0.8 hr R&R dealer / factory tool +0.4 hr ▸ programming details
📍 Behind rear bumper cover or center console area
🔧 Techline Connect
⚠️ Sensor calibration may be required; integrates ultrasonic and camera inputs
Rear Radar Sensor Module (RRSM) 0.8 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Behind rear bumper cover, left and right sides
🔧 Techline Connect
⚠️ Blind spot monitoring and rear cross-traffic alert; typically two modules (left/right)
OnStar Vehicle Communication Interface Module (VCIM) 0.8 hr R&R dealer / factory tool +0.6 hr ▸ programming details
📍 Behind glove box or rear cargo area, near roof
🔧 Techline Connect
⚠️ OnStar subscription reactivation required; 4G LTE or 5G capability depending on year
Remote Control Door Lock Receiver (RCDLR) 0.6 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Behind rear interior trim panel, driver side or center
🔧 Techline Connect
⚠️ Key fob programming required after replacement
Seat Control Module (SCM) 0.6 hr R&R aftermarket tool +0.2 hr ▸ programming details
📍 Under front seats, driver and passenger side
🔧 Techline Connect or aftermarket scan tool
⚠️ Multiple modules if heated/cooled/massage seats equipped
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.