Thumping sound when car slows down/downshifts(automatic)

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02-23-2012 | 02:54 PM

acepanz

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Junior Member

Joined: Feb 2012

Posts: 1

Thumping sound when car slows down/downshifts(automatic)

Any ideas what could be going on, the truck runs fine except for this sound it started making when it lowers speed.

02-23-2012 | 05:14 PM

drtom

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Joined: Aug 2009

Posts: 2,652

always check fluids first. if you have coolant discoloration,could be radiator/tranny problem . check quick!!

03-01-2012 | 06:46 PM

gbrock1031

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Joined: Dec 2009

Posts: 1

Check your cross member bushing.

03-02-2012 | 09:20 PM

HawaiianH3

Senior Member

Joined: Mar 2011

Posts: 176

Ahh the famous "crossmember busing issue!" Thats what it sound like to me as well!

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