2003 High Idle replaced TPS and checked for vacuum leaks no codes, no leaks

What is your question?

2003 Chevy Impala high idling we replaced tps and there is no codes. Also no vacuum leaks. We are at our wits end on this. Also how much will this cost to repair?

What makes this problem better or worse?

Worse when engine is warm

How long has your 2003 Chevrolet Impala had this problem?

Few months