I have a thud coming from the passenger side of my '06 Equinox. It's always three thuds and typically happens when I'm slowing but has occaisionally occured while driving. Since it only happens 3-4 times per week I haven't been able to recreate the noise for a mechanic and at least five of them have looked at it for me. This has been going on for about a year and others hear it when riding with me but no one has a clue what the problem is. Any insight is appreciated! Thank you!
Check for loose mud flaps or loose splash pan under engine transmission
SOURCE: 2006 Chevy Trailblazer makes THUD when accelerating
Check your coolant level, low coolant or air in your cooling system will make a "thud"noise in your heater core when the engine is under load from acceleration. The coolant rushes in to the heater core where the air pocket is trapped and then your hear the noise.
Start with the simple and make sure your coolant level is correct and then try to purge the system to remove the air out for your coolant system.
Thank you for using fixya and good luck
SOURCE: Son slid into curb straight on while transmission
without having it up in the air a proper diagnosis is impossible ,an educated guess is the front wheels were pushed back and the drive shafts have pulled out of the gearbox or one of the drive shafts is damaged in some way ,It will need a proper check over by a machanic to dertime whats wrong and weither the car is worth repairinig
SOURCE: There is a small thud
Find a new mechanic!!! Is your factory warranty over?
Can you tell where the thud is coming from? Engine area, under vehicle, in the rear? When the check engine light is on, go to a place like AutoZone and have the code scanned, and have them give a printout. post that info here.
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