Drivers of 2005-06 Chevy Equinox and 2006 Pontiac Torrent SUVs may complain of a rattling sound from the front when driving over rough roads at slow speeds. One likely cause for the noise, reports GM, is a worn lower brake caliper pin bushing.
To make a proper diagnosis, take the vehicle on a road test to see if you can get the rattling noise to reappear. If it does, apply and release the brake pedal. If the noise is unaffected by the pedal movement, this information doesn't apply.
If the rattle ceases when the brake pedal is applied, but returns when released, the lower caliper pin bushing is the likely culprit. Installing an improved bushing, part No. 15824369, should eliminate the noise complaint.
"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 email at [email protected].