The backseat area is always going to be noisier than the front...just like most vehicles. In the Equinox/Terrain specifically, it's because you're basically sitting on top of the rear wheels...and you don't have the laminated acoustic glass like the two front windows/windshield. Also, the cargo area can act as sort of an open acoustic chamber that can amplify road noise on certain types of pavement. I think GM skimped on the wheel well insulation for these vehicles either for weight or cost concerns...hopefully somebody will figure out a fairly easy DIY method using some kind of Dynamat material..
You have a 2006. The newer versions 2010 have as mentioned before an Acustic glass winsheild and laminated front windows ( The side windows compare to your 2006 winshield). They also have other sound dampaing features such as more insulation. The 4 cyl has a noise canncellation system that uses sound to conteract road noise.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
GMC Terrain, Equinox, and SRX Forum
A forum community dedicated to GMC Terrain, Chevy Equinox, and Cadillac SRX owners and enthusiasts. Come join the discussion about modifications, classifieds, troubleshooting, maintenance, reviews, and more!