Every control module on the 2022-2026 Chevrolet Silverado 1500 ZR2 — 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) 6.5 hr R&R security gateway +1.0 hr ▸ programming details
📍 10L80 10-speed automatic: integrated with valve body inside transmission (TEHCM - Transmission Electro-Hydraulic Control Module)
🔧 GM SPS2 / Techline Connect
⚠️ Transmission pan removal and fluid service required; VIN programming and adaptive relearn mandatory
Electric Power Steering Control Module (EPSCM) 2.8 hr R&R security gateway +1.0 hr ▸ programming details
📍 Integrated with electric power steering motor assembly on steering column, below instrument panel
🔧 GM SPS2 / Techline Connect
⚠️ Steering angle sensor calibration and VIN programming required after replacement
Body Control Module (BCM) 2.5 hr R&R security gateway +1.2 hr ▸ programming details
📍 Behind center of instrument panel, above center console, mounted to HVAC plenum bracket
🔧 GM SPS2 / Techline Connect
⚠️ Controls lighting, door locks, remote start, accessory power; VIN and vehicle configuration programming required
Gateway Module (GM) 2.0 hr R&R security gateway +1.5 hr ▸ programming details
📍 Behind center of instrument panel, near BCM, mounted to HVAC plenum bracket
🔧 GM SPS2 / Techline Connect
⚠️ Central communication hub for all CAN networks; security gateway enforcement; VIN programming critical
Electronic Brake Control Module (EBCM) 1.8 hr R&R security gateway +0.8 hr ▸ programming details
📍 Engine compartment, driver side frame rail below battery tray, integrated with hydraulic control unit
🔧 GM SPS2 / Techline Connect
⚠️ Brake bleeding required after replacement; VIN programming and wheel speed sensor calibration mandatory
Remote Control Door Lock Receiver / Theft Deterrent Module (RCDLR) 1.8 hr R&R security gateway +1.0 hr ▸ programming details
📍 Behind center of instrument panel, near BCM, mounted to HVAC plenum bracket
🔧 GM SPS2 / Techline Connect
⚠️ Remote keyless entry and immobilizer; key fob programming required after replacement
Infotainment Control Module (ICM) 1.5 hr R&R security gateway +1.0 hr ▸ programming details
📍 Behind center touchscreen display in instrument panel, above center console
🔧 GM SPS2 / Techline Connect
⚠️ Chevrolet Infotainment 3 system; VIN programming required; OnStar and vehicle settings stored in module
Power Liftgate Module (PLG) 1.5 hr R&R aftermarket tool +0.4 hr ▸ programming details
📍 Tailgate, integrated into tailgate latch assembly
🔧 GM SPS2 or Autel
⚠️ Power-release tailgate on equipped models. Requires configuration and position relearn after replacement.
Sensing and Diagnostic Module (SDM) 1.5 hr R&R security gateway +0.8 hr ▸ programming details
📍 Under center console, below radio/HVAC stack, mounted to floor tunnel
🔧 GM SPS2 / Techline Connect
⚠️ SRS system; VIN programming required; crash data retrieval possible with Bosch CDR tool
Transfer Case Control Module (TCCM) 1.5 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Under vehicle, mounted to driver side of transfer case housing
🔧 GM SPS2 / Techline Connect
⚠️ Controls 2-speed AutoTrac transfer case with 4WD modes; encoder motor calibration may be required
Forward Collision Alert / Adaptive Cruise Control Module (FCA/ACC) 1.5 hr R&R security gateway +1.2 hr with Safety Package (Forward Collision Alert, Adaptive Cruise Control) ▸ programming details
📍 Behind front grille, center, mounted to radiator support behind Chevrolet bowtie emblem
🔧 GM SPS2 / Techline Connect + ADAS calibration
⚠️ 77 GHz radar; static or dynamic ADAS calibration required after replacement or windshield service
Amplifier Module (AMP) 1.5 hr R&R dealer / factory tool +0.5 hr with Bose premium audio system
📍 Behind rear seat back, center, mounted to cab rear wall
🔧 GM SPS2 / Techline Connect
⚠️ Bose amplifier; configuration via ICM for audio tuning
Door Control Module (DCM) 1.2 hr R&R dealer / factory tool +0.5 hr with power-folding mirrors or memory seats ▸ programming details
📍 Inside driver door, behind door trim panel, mounted to inner door structure
🔧 GM SPS2 / Techline Connect
⚠️ Controls power windows, mirrors, locks for driver door; passenger door has separate module if equipped
HVAC Control Module (HVAC) 1.2 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Behind center instrument panel, integrated with HVAC control head assembly above center console
🔧 GM SPS2 / Techline Connect
⚠️ Configuration programming required for dual-zone systems; actuator calibration may be needed
Engine Control Module (ECM) 1.2 hr R&R security gateway +1.0 hr ▸ programming details
📍 Engine compartment, driver side rear firewall, mounted to bracket below brake master cylinder
🔧 GM SPS2 / Techline Connect
⚠️ VIN and theft deterrent programming mandatory; requires active GM subscription and security gateway unlock
Parking Assist Control Module (PACM) 1.2 hr R&R dealer / factory tool +0.5 hr with rear park assist (ultrasonic sensors) ▸ programming details
📍 Behind rear bumper fascia, center, mounted to bumper reinforcement
🔧 GM SPS2 / Techline Connect
⚠️ Processes ultrasonic sensor data; sensor calibration required after replacement
Instrument Cluster (IPC) 1.0 hr R&R security gateway +0.8 hr ▸ programming details
📍 Behind instrument panel, driver side, mounted in instrument carrier
🔧 GM SPS2 / Techline Connect
⚠️ VIN and odometer programming mandatory; digital cluster with configurable displays
Suspension Control Module (SCM) 1.0 hr R&R dealer / factory tool +0.8 hr ZR2 with Multimatic DSSV dampers (position-sensitive damping) ▸ programming details
📍 Under vehicle, mounted to frame rail passenger side, forward of rear axle
🔧 GM SPS2 / Techline Connect
⚠️ Controls adaptive damping for Multimatic DSSV spool-valve shocks; ride height and damping calibration
Trailer Brake Control Module (TBCM) 1.0 hr R&R dealer / factory tool +0.5 hr with factory trailer brake controller ▸ programming details
📍 Under instrument panel, driver side, above brake pedal assembly, mounted to kick panel bracket
🔧 GM SPS2 / Techline Connect
⚠️ Integrated trailer brake controller; configuration for trailer type required
OnStar Communication Module (VCIM) 1.0 hr R&R security gateway +0.8 hr ▸ programming details
📍 Behind headliner, above rearview mirror, near roof console
🔧 GM SPS2 / Techline Connect
⚠️ 4G LTE connectivity; VIN and OnStar account programming required; antenna integrated in module
Fuel Pump Control Module (FPCM) 0.8 hr R&R relearn only +0.3 hr ▸ programming details
📍 Under vehicle, mounted to frame rail driver side, forward of fuel tank
🔧 GM SPS2 or Autel
⚠️ PWM fuel pump control; auto-relearn typically sufficient, no VIN programming required
Seat Control Module (SCM) 0.8 hr R&R dealer / factory tool +0.5 hr with power-adjustable driver seat with memory ▸ programming details
📍 Under driver seat, mounted to seat frame rail
🔧 GM SPS2 / Techline Connect
⚠️ Controls power seat, lumbar, and memory functions; configuration programming for memory features
Rear Vision Camera Module (RVCM) 0.8 hr R&R relearn only +0.3 hr ▸ programming details
📍 Integrated with rear camera assembly in tailgate handle or bumper, center
🔧 GM SPS2 or Autel
⚠️ Standard backup camera; dynamic guidelines calibration via ICM; no standalone programming typically needed
Headlamp Control Module (HCM) 0.8 hr R&R dealer / factory tool +0.5 hr ▸ programming details
📍 Engine compartment, behind driver side headlamp assembly, mounted to radiator support
🔧 GM SPS2 / Techline Connect
⚠️ Controls LED headlamps, DRL, and automatic high beam; configuration programming recommended
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?
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