Thumping sound when car slows down/downshifts(automatic)

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02-23-2012, 01:54 PM

acepanz

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Join Date: 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, 04:14 PM

drtom

Banned

Join Date: Aug 2009

Posts: 2,652

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

03-01-2012, 05:46 PM

gbrock1031

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Join Date: Dec 2009

Posts: 1

Check your cross member bushing.

03-02-2012, 08:20 PM

HawaiianH3

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Join Date: Mar 2011

Posts: 176

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

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