very loud roaring sound
 

I have a new 2019 red line traverse with 700 miles on it the other day me my wife and two other passengers was on the interstate about 70 mph started climbing a slite hill it geared down and made a very very loud roaring sound this sound is intermitting and seems to happen with a car loaded with passengers has any one else had this issue and if so what was it Thanks Barker

Take it to the dealer. It is under warranty.

I have its intermittent they couldn't duplicate. Its happen to me only twice

climbing hills the engine gets hot and cooling fan comes on full blast. It can be loud.

Thanks but I know for sure its not the fan. This is a very loud roar sound like a motorcycle with no muffler beside you. Or like the good ole hotrod days when I ran headers and cherry bomb mufflers that loud roar we used to get from that when the mufflers where just below the seat if you can relate. I have read of others on this forum that had this same problems they posted about a year ago and they never followed up to let us know if they had it resolved.

I have the same issue with my 2019 traverse when the passenger seat has a heavier than usual load. Otherwise no issue.

Have you figured out what it is yet? My 2018 Redline is doing this constantly! Nearly every time I drive it does it 3-5 times. A lot of times it's when I'm accelerating, or I can be coasting down a hill and it does it real bad. It's LOUD like the motor is roaring. Sometimes it sounds like it's in the back where the exhaust is, I can't tell. It definitely sounds like a motorcycle humming beside you for a minute. I haven't taken it in to be looked at yet because this doesn't seem to be a common problem and I don't want them to do the "process of elimination" and charge me thousands just fixing random things until they figure it out.

2018 Traverse with same issue. Happens occasionally. Sound stops as soon as I let off of the accelerator. Very loud roar. Anyone figured out what this is yet?

@Dkw2007
did you check everything in this thread?