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Thumping noise - 2010 V

1K views 2 replies 3 participants last post by  Cadillac Customer Service 
#1 ·
I have a 6M, 2010 V and have noticed a thumping noise when i hit the gas (for example) in 4th gear if the car is only running 2500 rpms. It makes a thumping noise as if it is an automatic tranny and has just shifted into lower gear. I noticed similar behaviour in other gears but the loudest noise is produced after cruising in 4th and then hitting the gas (less than 2500 rpms).
Is this normal behiviour?
 
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