Sean Dever posted an answer for this 2007 Buick LaCrosse CXL Sedan:
"HDM Headlight Delay Module, real common problem, $40.00 at autozone. Original part #..."
Sean Dever posted an answer for this 2006 Buick LaCrosse:
"How difficult is it to access the control valve? I didn't find it under the hood so I am..."