Buick Enclave
3.6-liter High Feature V6 with Active Fuel Management and Stop/Start, 310 hp. Timing chain issues from the LLT are largely fixed. Water pump remains a known wear item between 80,000 and 130,000 miles, expensive due to buried location.
Solid V6, but the 9-speed is annoying
The LFY engine runs reliably, but the 9T65 transmission shudders in early years. Much improved from 2021 onward.
Engine Weaknesses 1
Water pump is a known wear item on the 3.6 platform, typically failing around 80,000–130,000 miles. Located in a labor-intensive spot.
Symptoms: Coolant loss, overheating, coolant under engine
Vehicle Weaknesses 5
The 9-speed 9T65 automatic suffers from torque converter shudder, especially in gears 2-5. GM launched a pilot program to replace affected transmissions.
Electronic gear selector fails to recognize Park position. GM TSB and class action lawsuit filed.
Recurring refrigerant leaks: A/C hose rubbing on power steering bracket, pinhole leaks in rear evaporator. A/C blows warm.
Class action lawsuit against GM for defective paint on large SUVs. Clearcoat peels especially on roof and hood.
Center touchscreen freezes or becomes unresponsive. Requires button-hold restart.
Top Reported Issues
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All Buick models Enclave C1XX overview