Re: rubbing/grinding noise on startup, chevy says its NORMAL!?!?
Not necessarily. Has to do with harmonics, only at a certain rpm you get the rattle.
"Brownstone Bumblebee" 2016 Diesel Colorado Z71 CCSB 4X4, Brownstone Metallic
HPD and Provent 200 Catch Cans
Amsoil Remote Bypass Filter and Fluids.
"I respect everyone's opinion, no matter how wrong it may be."
MetalMan Front Differential, Engine Oil Pan, & Steering Motor Skid Plate