H3 Front end: Harsh metal clinking sound as I accelerate. In “Drive” and “Reverse”

[jasonjohnny1]

Hello everyone! I have a 2006 Hummer H3 133k miles

Yesterday when I got home from work and as I was reversing nearly 100 feet to parallel park, I could hear a <<terrible metal knocking sound as I accelerated>>. This morning as I’m driving to work, the metal clinging sound is worsening (barely made it to work) it only happens when I accelerate. But since it’s getting worse, I can slowly hear it as I roll in idle.

I can hear the sound coming from the front of the car.

Can anyone please help me out? SOS!


PS i had front differential tune up done last year (after I heard the same sound.)


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[alrock]

Get it to a shop ASAP, or have someone walk alongside the H3 as you slowly drive. It's going to get worse, aka more expensive, if you keep driving with a sound like that.

 

[4speedfunk]

Most likely it’s the CV on the rear of the front driveshaft . They make a horribly loud clanking sound when they go dry.


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[alrock]

When mine first failed it sounded like marbles in a coffee can.

 

[Hunner]

That's why I keep my marbles in a soft pouch!

 

[RamRod]

Take a rubber mallet and hit the joints of your drive shaft softly... You will hear a different sound if a joint has gone bad



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[rascole]

Drive/Prop shaft CV, left or right side CV if those are OK drain the oil in the front diff and check for metal shavings. Where in LA are you? If you are close I can give you a hand.