Buick Enclave engine losing power issue possibly related to timing chain on Buick Enclave

Submitted by Vehicle Owner · Aug 14, 2025
Published by RepairPal

Problem overview

Some Buick Enclave owners report experiencing engine power loss that may be linked to timing chain issues. Stretched timing chains can lead to engine misfires and potentially catastrophic engine damage. While General Motors extended the warranty for 2009 Enclave owners due to these timing chain problems, some owners found themselves without coverage. The timing chain is a crucial component that connects the engine's camshaft and crankshaft, and although the timing chain issue was mostly resolved by 2013, it can still pose significant risks. Repairing timing chain problems often involves complex procedures, including addressing oil leaks from the timing cover, which may necessitate dropping the entire engine or subframe assembly. Therefore, if you suspect a timing chain-related issue, it is recommended to have your Buick Enclave inspected by a qualified mechanic.

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Buick Enclave vehicles with this problem

1 model year affected
Average mileage: 145,000 miles
(145,000 - 145,000)

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