I have a 05 Colorado. Dealer told me that when I engage the starter the noise I hear Is normal.
The noise is like the starter is not connecting with the flywheel. It's the sound of when one would engage the starter when the motor is running. Dealer told me its Imposable to hear that noise because the starter will not engage once the engine has started. True, It will not do it once its running. But it does it when it's being started in the AM.
What is the cause of this ?