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Q: headlights dimming or quivering during night driving on 2005 Buick Terraza

A month ago while on a trip the headlights and enterior lighting when out when I turned on the bright lights. Flipped back to normal lights back on, about ten miles they blinked off then back on. Took garage and said a lose wire was found connecting to battery. Suppose to have taken care off. A few weeks ago, noticed the dimming down and or the quivering...during night driving..Happened last two times I was night driving..
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I had the same problem with the lights flickering during night time driving. the problem was fixed with a new alternator. You can look it up on consumer under 2005-07 Buick terraza. There are more problems addressed there with the solution.
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