What is your question?
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What is your question?
2017 WITH 22000 MILES WHEN STARTING OUT, OFF AND ON, I HEAR A BUMP OR BANG IN REAR OF CAR, TRUNK AREA.
What makes this problem better or worse?
NO
How long has your 2017 Hyundai Sonata had this problem?
OFF AND ON OVER THE LAST 6 MONTHS
You’re not going to find any beneficial diy repair assistance online anyway - *HANDS-ON* evaluation will be required - have dealer fix the problem under warranty. Good luck!