Cavilier transmission trouble

could flushing the transmission of a 2003 cavilier damage it?

Only if the flush was done by someone not competent to do it.
Let me guess. Was this done at “Quicky Lube”?

Did you go 100K plus miles without a service then you had a flush because the trans was “acting up” and now you blame the flush? Hey you are the one that left out details.

no it only has 19,000 miles. the trans slips when u turn or just take off, it revs but takes a sec to go. 2 years ago the dealer flushed it, it only had 14000 miles at that time. i was told before because we have another cavalier too, that flushing the trans on these cars will damage them. just wondering if that flush two years ago is causing my problems now.