2019 Silverado 5.3 acceleration grinding

[gt tangerine]

Hey all,

 

My new 2019 LT 5.3 4x4 is making a weird noise upon harder acceleration. 

 

In 2wd, if I drop the pedal, the truck accelerates like normal, but along with the motor winding up, I hear a muffled grinding or weezing noise. 

 

Anyone else have this? Its like its not putting all the power to the rear wheels and something isn't keeping up in the drive line.

 

Just wanted to see before I let some tech beat on my 300 mile old truck

 

 

Thanks all :/

[drewbiehd]

It's hard to know exactly what you're talking about, but I think it's normal. Mine has 250 miles and I can kind of hear what you're talking about. I think it's just the way the exhaust was designed. Could be wrong but that's the feeling I get when I accelerate. Also aren't you supposed to keep it under 3k rpm for break in? Just a thought. I have a new exhaust coming that I'll throw on and see if it changes that raspy accelerating sound.

Edited April 23, 2019 by drewbiehd

[towdog333]

 Is that a double cab , didn't know the LT's came in DC