Cadillac XT5 and XT6 Radiator Fix: What Buyers Should Know

Cooling System Issue Affects Recent Model Years

General Motors has identified a coolant leak problem affecting certain Cadillac XT5 and XT6 models from 2023 through 2025. According to the official GM Service Update N262570770, the issue stems from a design flaw in the radiator’s thermal break tabs, which are small components intended to manage heat stress on the cooling system. When these tabs remain in their original position, they can actually cause excessive stress on the radiator itself, leading to leaks that compromise the vehicle’s cooling performance.

This is not a widespread catastrophic failure, but rather a specific manufacturing concern that GM has proactively addressed through a dealer service campaign. The company is taking responsibility for the defect and offering the correction free of charge to all affected owners, regardless of whether they’ve experienced symptoms yet.

The Solution: A Simple Dealer Visit

The fix is straightforward and requires minimal labor. Technicians will remove the air splash shield beneath the radiator, then pull back the upper air baffle to access the thermal break tabs. Using side cutters, they will sever all four tabs present on both sides of the radiator. Once the tabs are removed, the baffle and splash shield are reinstalled. The entire procedure takes approximately 18 minutes per vehicle, and no replacement parts are necessary, which keeps repair costs to zero for customers.

While Cadillac navigates competitive market challenges, maintaining owner satisfaction through proactive service campaigns like this reinforces the brand’s commitment to quality. GM has mandated that dealers perform this repair on any XT5 or XT6 that comes through their service bays for any reason, ensuring comprehensive coverage across dealer networks. Additionally, dealers are required to perform the fix on unsold inventory currently sitting on dealer lots.

Timeline and Model Coverage

The service update applies to all 2023, 2024, and 2025 model-year Cadillac XT5 and XT6 vehicles that are registered in GM’s Global Warranty Management system. Current owners have until September 30, 2028 to bring their vehicles in for service, providing a comfortable two-year window to complete the work. This generous timeline means there’s no rush to schedule an appointment immediately, though addressing it sooner rather than later provides peace of mind.

The Cadillac XT5, a two-row luxury crossover, is manufactured at GM’s Spring Hill plant in Tennessee. Production of the current generation is set to conclude by the end of this year, with the all-new second-generation XT5 scheduled to debut as a 2028 model in the fourth quarter of 2027. Meanwhile, the three-row Cadillac XT6 ended production in November 2025, and the next-generation model is expected to launch mid-2028 as a 2029 model year vehicle at the same Spring Hill facility.

What This Means for Owners and Shoppers

If you own a 2023-2025 XT5 or XT6, this service bulletin doesn’t indicate a safety risk, but rather a manufacturing issue that GM wants corrected. The company’s swift identification and solution show the automaker is monitoring quality and taking preventive action. Since the repair involves no parts and minimal labor, there’s virtually no downtime involved. Schedule the service during routine maintenance or your next dealer visit.

For shoppers considering a used XT5 or XT6 from these model years, this is important information. When evaluating a pre-owned example, confirm with the selling dealer whether this thermal break tab service has been completed. If it hasn’t, request that the dealer perform it before purchase or negotiate the cost of having it done post-purchase. A simple phone call to a Cadillac service department can confirm whether a specific vehicle has received the update.

As Cadillac expands its global presence and strengthens its product lineup, addressing quality issues promptly demonstrates the brand’s dedication to customer satisfaction. The XT5 and XT6 remain strong contenders in the luxury crossover segment, and this proactive service campaign reinforces that position. Whether you own one of these vehicles or are shopping for one, understanding the radiator repair process and timeline puts you in a better position to make informed decisions about maintenance and purchase timing.

Contact your nearest Cadillac dealer to verify whether your vehicle has received this service, or to schedule an appointment if needed. The process is quick, cost-free, and ensures your cooling system operates as designed for years to come.