Problems for specific Buick models:
Car problem reports
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Newest reported Buick problems
Fuel injectors can short-circuit electrically causing a rougher than normal idle and reduced performance.
The anti-lock brake (ABS) accumulator may fail causing loss of power brake assist. (The brake pedal will become very hard.)
The engine temperature sensor wire for the engine temperature gauge, or warning light, may touch the rear exhaust manifold causing a short to ground causing erratic operation of the temperature gauge or warning light.