Thumping sound when car slows down/downshifts(automatic)

Reply Subscribe

Thread Tools

Search this Thread

Feb 23, 2012 | 01:54 PM

acepanz

Thread Starter

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.

Feb 23, 2012 | 04:14 PM

drtom

Banned

Joined: Aug 2009

Posts: 2,652

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

Mar 1, 2012 | 05:46 PM

gbrock1031

Junior Member

Joined: Dec 2009

Posts: 1

Check your cross member bushing.

Mar 2, 2012 | 08:20 PM

HawaiianH3

Senior Member

Joined: Mar 2011

Posts: 176

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

Reply Subscribe

Related Topics

Thread

Thread Starter

Forum

Replies

Last Post

thumping sound ?? took to dealer??

05blackduramax

PRIVATE For Sale / Trade Classifieds

Apr 6, 2015 09:19 AM

Slow speed thumping sound ????

Fever4Speed

Hummer H3

Apr 12, 2010 08:40 PM

H3T Driveline Thumping noise??

rgvanover

PRIVATE For Sale / Trade Classifieds

Dec 29, 2009 06:03 PM

Sucking sound with a big popping sound at shut down

ratrodchris

PRIVATE For Sale / Trade Classifieds

Jan 13, 2009 07:38 PM

Diagnosed low speed thumping sound.

hsbertiii

PRIVATE For Sale / Trade Classifieds

Mar 20, 2007 07:05 PM