2021 AT4 - Left Front Popping

[Cappy80]

Since I've purchased this truck new a little over a year ago, I've had issues with a loud pop coming from the left front area.  This pop only originates when there is a load applied (heavy braking) or unload (crossing railroad tracks, pot holes).  It's loud enough to have startled my kids and wife while riding along.  Dealer hasn't been able to find anything.  Just had an alignment done and caster on the left front was right at 3 (bottom spec).  As soon as I left the alignment shop and crossed railroad tracks, it sounded like a rod coming through the cab.

 

Any thoughts/ideas?

 

I'm leaning towards the caster being part of the issue, as I'm fairly confident in it being something suspension related.

 

Appreciate any help/guidance you all may have...

[jaxcam02]

10 hours ago, Cappy80 said:

Since I've purchased this truck new a little over a year ago, I've had issues with a loud pop coming from the left front area.  This pop only originates when there is a load applied (heavy braking) or unload (crossing railroad tracks, pot holes).  It's loud enough to have startled my kids and wife while riding along.  Dealer hasn't been able to find anything.  Just had an alignment done and caster on the left front was right at 3 (bottom spec).  As soon as I left the alignment shop and crossed railroad tracks, it sounded like a rod coming through the cab.

 

Any thoughts/ideas?

 

I'm leaning towards the caster being part of the issue, as I'm fairly confident in it being something suspension related.

 

Appreciate any help/guidance you all may have...

assuming 4wd? any additional lift besides the stock AT4 lift? maybe a CV axle issue? CV axle nut not tight?

[Cappy80]

Yes, 4WD and stock suspension lift.  Thought about the CV, but I'm only getting the pop under quick load/unload.  Thought i would experience it more regularly with a CV issue?

[jaxcam02]

First thing I would do is get under there and put a socket on all the hardware and make sure everything is tight and nothing came slightly loose.

Edited June 22, 2022 by jaxcam02

[Gangly]

Because its happening under a load, double check your bolts as mentioned above.  Start with UCA, LCA, shocks, and CV nut.  Its not often, but things came come loose.

[Cappy80]

On 6/22/2022 at 9:40 AM, jaxcam02 said:

First thing I would do is get under there and put a socket on all the hardware and make sure everything is tight and nothing came slightly loose.

Thank you

[Cappy80]

On 6/22/2022 at 1:51 PM, Gangly said:

Because its happening under a load, double check your bolts as mentioned above.  Start with UCA, LCA, shocks, and CV nut.  Its not often, but things came come loose.

Thanks, will double check everything 

[GMCustomerService]

On 6/20/2022 at 11:27 PM, Cappy80 said:

Since I've purchased this truck new a little over a year ago, I've had issues with a loud pop coming from the left front area.  This pop only originates when there is a load applied (heavy braking) or unload (crossing railroad tracks, pot holes).  It's loud enough to have startled my kids and wife while riding along.  Dealer hasn't been able to find anything.  Just had an alignment done and caster on the left front was right at 3 (bottom spec).  As soon as I left the alignment shop and crossed railroad tracks, it sounded like a rod coming through the cab.

 

Any thoughts/ideas?

 

I'm leaning towards the caster being part of the issue, as I'm fairly confident in it being something suspension related.

 

Appreciate any help/guidance you all may have...

This is certainly not what we like to hear, Cappy80.  Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your 2022 RST. To do so, please send an email to [email protected] with ATTN: Cappy80/Gm Trucks in the subject line.

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[Gmc4Bob]

Took my truck in with left front occasional popping noise. They loosened bolts and found one to be binding retorqued the bolts to factory specs and this seems to have cured the noise.