57gman

Weather permitting every weekend I drive my C5 as my DD. Last night I got her out again and went a different way, up a steep incline in the first 5 minutes. I heard three different times going up the incline, almost a grinding sound. My wife even commented what's that noise.

Coasting down the other side of the mountain, nothing. Later I went a different way over the mountain home. And up another steep hill. The sound did not return.

What do you think?

Pounder

miles ?? where is the noise coming from, front, rear, tunnel ??? change with more or less throttle ??

57gman

[QUOTE=akapounder;1593121776]miles ?? where is the noise coming from, front, rear, tunnel ??? change with more or less throttle ??[/QUOTE


45,000 miles, rear, volume did not change but was on the throttle. And the best part is, drove it 70 miles today without the strange noise, once.

Just call it a weird experience. maybe I'll go up the mountain tomorrow or
Should we let sleeping dogs alone?

sirdano

Maybe differental is low and when you went up the incline it ran dry?

idahoskiguy

Definitely check the levels in the trans and dif!

My 2001 Z06 made a grinding noise that was cured by renewing the differential lube.

Good luck.

Vetteman Jack

Those two things would be a good start. Hopefully it is not something that will end up being expensive to repair.