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Fitment notes: Heavy-duty gas engine application; underhood mounting
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Every control module on the 2025-2026 Chevrolet Silverado 2500HD — 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.
⚠️ Mileage programming required; legal documentation of odometer transfer mandatory. 2025+ features enhanced digital display with configurable layouts.
Remote Control Door Lock Receiver / Theft Deterrent Module (RCDLR)1.0 hr R&Rsecurity gateway +0.5 hr▸ programming details
📍 Behind left side of instrument panel, integrated with BCM or separate module near steering column
🔧 GDS2 + Techline Connect
⚠️ Remote key fob programming required. Immobilizer relearn necessary. Push-button start standard on most trims 2025+.
Bed View Camera Module (BVCM)1.0 hr R&Rdealer / factory tool +0.3 hrwith bed view camera (available 2025+)▸ programming details
📍 Integrated with third brake light assembly in cab rear window
🔧 GDS2 + Techline Connect
⚠️ Provides view into truck bed. Camera calibration required after replacement.
Parking Assist Control Module (PACM)1.0 hr R&Rdealer / factory tool +0.3 hrwith rear park assist or front/rear park assist▸ programming details
📍 Behind rear bumper, center position
🔧 GDS2 + Techline Connect
⚠️ Controls ultrasonic parking sensors. Sensor calibration required after replacement.
Blind Zone Alert Module (BZAM)1.0 hr R&Rdealer / factory tool +0.5 hrwith Blind Zone Alert / Side Blind Zone Alert▸ programming details
📍 Behind rear bumper, left and right corners (two modules)
🔧 GDS2 + Techline Connect
⚠️ Two radar modules (left and right). Calibration required after replacement. Includes rear cross-traffic alert and trailer blind zone alert.
📍 Under left side of instrument panel, near steering column
🔧 GDS2 + Techline Connect
⚠️ Factory integrated trailer brake controller. Requires calibration for trailer weight. Enhanced trailer management features 2025+.
Fuel Pump Control Module (FPCM)0.8 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Under vehicle, mounted to frame rail near fuel tank
🔧 GDS2 or advanced aftermarket scan tool
⚠️ Controls fuel pump speed based on demand. Self-learns after installation.
Headlamp Control Module (HCM)0.8 hr R&Rdealer / factory tool +0.3 hrwith automatic headlamps or LED lighting▸ programming details
📍 Behind left headlamp assembly in engine compartment
🔧 GDS2 + Techline Connect
⚠️ Controls automatic headlamp operation, daytime running lamps, and LED headlamp functions. Matrix LED headlamps require additional calibration.
Seat Control Module (SCM)0.8 hr R&Rrelearn only +0.2 hrwith power seats and memory function▸ programming details
📍 Under driver seat, mounted to seat frame
🔧 GDS2 or none (self-learning)
⚠️ Controls power seat adjustment and memory positions. Self-learns memory positions after replacement.
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 Chevrolet Silverado 2500HD 6.6L V8 L8T Gas 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.