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Fitment notes: 12V auxiliary battery for vehicle systems; main traction battery is 200+ kWh lithium-ion EV battery pack
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Every control module on the 2023-2026 GMC Hummer EV SUV — 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.
Electric Power Steering Control Module (EPSCM)3.5 hr R&Rdealer / factory tool +0.6 hr▸ programming details
📍 Integrated with steering gear assembly, front subframe center
🔧 GM SPS2 via MDI 2
⚠️ Includes CrabWalk and Extract Mode programming; steering angle sensor calibration required after replacement
📍 Under passenger seat, front mounting rail, passenger side
🔧 Autel IM608 or GM SPS2
⚠️ 14-way power seat with massage; position relearn after replacement
Rear Vision Camera Module (RVCM)0.7 hr R&Rrelearn only +0.2 hr▸ programming details
📍 Integrated with liftgate handle assembly, rear center
🔧 Autel IM608 or GM SPS2
⚠️ Washer system integrated; camera aim calibration 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? 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 2025 GMC Hummer EV SUV 3X Tri 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.