I have a 2017 Chevy Colorado 6cylinder 8 speed trans.The trans,when in traffic free wheels all the time.Leave off the gas then step on the gas it goes clunk as it takes hold again.It does it all the time.They told me that"s okay. I feel after a while it will knock the seals out of the rear end and the trans.I can>t believe that is okay.
It is OK, annoying, but OK. Freewheeling saves fuel. If you think it is excessive, take this ONE year old truck back to Chevy. If they say “they ALL do that” make them prove it with another Colorado. Either other trucks do it or they should fix it.