Some 2006-08 Buick Lucerne models with 3.8-liter engines may emit a buzzing noise or vibration from the brake and/or accelerator pedals. One likely cause, General Motors Co. said, is the fuel lines are making contact with the brake booster.
Installing a new-design fuel feed and evaporative emissions pipe assembly, part No. 25978188, that routes underneath the booster should put the problems to rest.
"Factory Fixes" is written by Jim DePalma, a 30-year veteran of the auto repair business who has served stints as a service manager, parts manager and ASE-certified technician. His column provides vehicle manufacturers' authentic factory technical service bulletins (TSBs) that have been condensed for easier reading. Mr. DePalma advises that techs always check with a dealer or repair information system for the latest revisions before starting to work on a vehicle. He can be reached via e-mail at [email protected].