Fitment notes: AGM battery required for stop-start system; located under hood
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Every control module on the 2019-2026 Cadillac XT4 — 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.
Heating, Ventilation and Air Conditioning Control Module (HVAC)2.5 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Behind center stack, integrated with HVAC unit under instrument panel
🔧 GDS2/Techline Connect
⚠️ Dual-zone or tri-zone depending on trim; refrigerant recovery required; actuator calibration after programming
📍 Under driver and/or passenger seat, mounted to seat frame (one per power seat)
🔧 GDS2 or Autel MaxiSys
⚠️ Memory seats require position relearn; heated/ventilated seat configuration; massage function on Premium Luxury trim
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.
General Motors, LLC (GM) is recalling certain 2025 Cadillac XT4 vehicles. The instrument panel may be missing the perforation on the underside of the panel cover that allows the passenger-side air bag to deploy properly.
Consequence: A passenger-side air bag that does not deploy properly increases the risk of injury in a crash.
Remedy: Dealers will replace the instrument panel upper cover, free of charge. Owner notification letters were mailed November 29, 2024. Owners may contact Cadillac customer service at 1-800-458-8006. GM's number for this recall is A242476151.
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 Cadillac XT4 2.0L Turbo I4 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.