Buick Enclave Years to AvoidThe weakest years — and the one you should buy instead
After reviewing every Buick Enclave we've analyzed (18 years), these are the 3 weakest. Each one has either an absolute low reliability score, chronic repair issues, or unusually high ownership costs relative to other Enclave years.
Proceed with caution
2009 Buick Enclave
The 2009 Buick Enclave is a spacious and comfortable family hauler, but its long-term reliability is significantly hampered by several costly and common issues. While it offers a premium feel for the price, potential buyers must be prepared for major drivetrain repairs, making a thorough pre-purchase inspection absolutely critical to avoid financial headaches.
Why this year scores low
The 6-speed automatic transmission is prone to 3-5-R clutch wave plate failure, leading to loss of drive, erratic shifting, or complete transmission failure. This is a design flaw that manifests as hard shifts or a sudden inability to engage gear.
The 3.6L V6 engine (LLT) is susceptible to timing chain stretch, often exacerbated by infrequent oil changes. This triggers check engine lights (P0017, P0008, P0009) and can eventually lead to severe engine damage if neglected.
Numerous reports of power steering pump failure, leaking hoses, and rack and pinion assembly leaks are common. This results in groaning noises, fluid leaks, and eventually heavy, difficult steering.
Proceed with caution
2011 Buick Enclave
The 2011 Buick Enclave offers comfort and space at an attractive used price, but it comes with a significant caveat: expect potential high-cost powertrain repairs. This vehicle is a 'proceed with caution' purchase that demands a thorough pre-purchase inspection and a robust repair fund for peace of mind. It’s not for the faint of heart or those seeking bulletproof reliability.
Why this year scores low
The 3.6L LLT V6 engine, while generally powerful, is notorious for premature timing chain stretch and failure. This is often due to extended oil change intervals or design flaws leading to wear, resulting in significant repair costs and potential engine damage.
The 6-speed automatic transmission is prone to wave plate failures, harsh shifts, delayed engagements, and eventual total failure. These issues can manifest as slipping, clunking, or complete loss of drive, often requiring a rebuild or replacement.
Owners frequently report issues with the power steering pump failing or developing leaks, leading to a loss of power assist, groaning noises, or fluid puddles. This is a common and recurring problem that affects drivability and safety.
Proceed with caution
2012 Buick Enclave
The 2012 Buick Enclave offers compelling space and comfort for families, but its underlying mechanical risks, particularly with the automatic transmission, mean you must proceed with extreme caution. This vehicle can be a solid value if its known weaknesses have been thoroughly addressed or are verifiable as non-issues, otherwise, prepare for potentially significant repair bills.
Why this year scores low
The 3-5-R wave plate within the automatic transmission is prone to fracturing, leading to a loss of reverse gear, third gear, and fifth gear. This is a widespread, critical failure requiring a full transmission rebuild or replacement.
Failures of the power steering pump, steering rack leaks, and the associated fluid lines are common. This can lead to loss of power assist, groaning noises, and a heavy steering feel.
While less prevalent than earlier generations, the timing chains can still stretch prematurely, leading to check engine lights, rough running, and eventual engine damage if not addressed. Water pump leaks are also a common issue.