Front end clunk only on acceleration

[BrokeDenali]

Yes yes ive looked before anyone comes at me. 

Im not a member yet bit i do need help. 

My yruck is a 2012 Sierra Denali 1500. It has 140k miles and ive noticed that only from a dead stop when i push the gas it clunks. It also feels like there is a delay to when the front wheels catch. Im not sure what it is and any suggestions would be appreciated. 

Thank you

[riverbanks]

You mean release,not catch? probably got to inspect brake pads for binding,a little sanding on pads and pad slide area,a touch of antiseize

[Mikebtte]

First off, welcome to the club. We are mostly adults and understand the search function sucks. But if you need someone to get upset at you, head on over to GMfullsize.

This can be caused from a couple of different things but is prolly a combination of a group of things wearing out. 

If the upper and lower ball joints are failing you will get this feeling as everything is shifting position prior to the wheels starting to roll. Ball joints are common on this year of GM truck and are easily serviceable. It is my recommendation to always replace tie rods when doing this as you will almost always need them done shortly after and you will save on labor to replace them now.

 

Could also be the brakes or other suspension related issue. The sway bar end links just about fall apart when they left the showroom floor.

If you can, get the front end off the ground and us a pry bar to move everything around. Lift up on the tires, wiggle back and fourth and side to side. If you can get it to pop you can locate the noise.

Another option is to stand outside and listen while someone operates the unit and see if you can here the noise a bit closer.

 

Your username cracked me up and indicates that once you fix the issue you wont return, but I hope to here back with the diagnosis.

Edited December 26, 2019 by Mikebtte

[Jetmek]

I was thinking possibly the motor mounts too.

[BrokeDenali]

Thank you mikebtte and jetmek. 

Im going to look it all over this weekend and whatever i find ill let you know.

Oh no. Don't you worry. I will be back with a thousand more questions and my username will stay exactly the same. 

Thank you again for all the help. Will report back in a few days. 

[BrokeDenali]

On 12/26/2019 at 3:04 PM, Mikebtte said:

First off, welcome to the club. We are mostly adults and understand the search function sucks. But if you need someone to get upset at you, head on over to GMfullsize.

This can be caused from a couple of different things but is prolly a combination of a group of things wearing out. 

If the upper and lower ball joints are failing you will get this feeling as everything is shifting position prior to the wheels starting to roll. Ball joints are common on this year of GM truck and are easily serviceable. It is my recommendation to always replace tie rods when doing this as you will almost always need them done shortly after and you will save on labor to replace them now.

 

Could also be the brakes or other suspension related issue. The sway bar end links just about fall apart when they left the showroom floor.

If you can, get the front end off the ground and us a pry bar to move everything around. Lift up on the tires, wiggle back and fourth and side to side. If you can get it to pop you can locate the noise.

Another option is to stand outside and listen while someone operates the unit and see if you can here the noise a bit closer.

 

Your username cracked me up and indicates that once you fix the issue you wont return, but I hope to here back with the diagnosis.

So i went through what i could before it started to pour down rain. Nothing seemed wrong but was unable to check out everything. Its just a heavy clunk when i press the gas from a stop. If im really gently then it barely if at all does it. 

Im stumped but will keep updating. 

[Ebonez]

I have a 2009 Yukon Denali that seems to have the same issue. Upon a firm acceleration, there is a "clunk" or sometimes a "clunk clunk" from somewhere in the front. Cant tell if its right side, left side or the middle.  It makes a similar noise (may or may not be the same noise) when going over a speed bump (or in my case the end of my driveway). I've tried a hard acceleration with my foot on the brake and there are no noises to report so I don't think the engine mounts are involved.  Any additional thoughts or solutions? 

[Levon]

On 12/26/2019 at 3:04 PM, Mikebtte said:

First off, welcome to the club. We are mostly adults and understand the search function sucks. But if you need someone to get upset at you, head on over to GMfullsize.

This can be caused from a couple of different things but is prolly a combination of a group of things wearing out. 

If the upper and lower ball joints are failing you will get this feeling as everything is shifting position prior to the wheels starting to roll. Ball joints are common on this year of GM truck and are easily serviceable. It is my recommendation to always replace tie rods when doing this as you will almost always need them done shortly after and you will save on labor to replace them now.

 

Could also be the brakes or other suspension related issue. The sway bar end links just about fall apart when they left the showroom floor.

If you can, get the front end off the ground and us a pry bar to move everything around. Lift up on the tires, wiggle back and fourth and side to side. If you can get it to pop you can locate the noise.

Another option is to stand outside and listen while someone operates the unit and see if you can here the noise a bit closer.

 

Your username cracked me up and indicates that once you fix the issue you wont return, but I hope to here back with the diagnosis.

 

[Levon]

I have a 2011 gmc sierra that the front wheel has a popping sound on fast eccellration. I have replaced upper and lower balloons and tierod ends and control arms and new brakes and disc . I have spend $3500.00 what else could it be.