Click noise on 2,3 shift

[rickytickyshorth]

I have a 15 Silverado with the 5.3 and 6 speed. I have a clicking noise on the 2,3 up shifts with light to moderate throttle.

 

I went for a ride with a shop foreman this morning and he acknowledged that he hears it, but doesn’t have a clue what it could. He is going to do some research and I'm bringing it back next week so they can spend some time on it.

 

Anybody have a ideas?

 

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[rickytickyshorth]

Nobody?

 

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[amxguy1970]

If a shop foreman who rode in your truck has no idea how is an internet board going to know with less qualified people and not being able to go for a ride or drive from another part of the country going to be able to tell you?

 

Never understood those identify/locate sound or noise threads, we aren't there what use is it? Can sometimes take me two people do silly things to find and track a sound or noise. Good luck I guess and let us know...

 

Tyler

[Thomcat]

My .02 - May not be a problem, could be modulation of the shift points as an adaption to driving habits.

 

Sounds like the action of the servos controlling the bands on the drums of the 2-3 planetary gear set which can graduate to a muffled thump if you bring the engine right up to the shift point and then release the gas and coast which will usually cause a harsh upshift engagement.

 

If there's no engine flare up before the shift point and solid engagement (no slippage) after shift, I wouldn't let them pull apart the tranny just yet, especially if the color/condition of the fluid is OK. I'd keep an eye on it to see if it worsens......you should still have plenty of time for future action under the warranty for a '15

[rickytickyshorth]

If a shop foreman who rode in your truck has no idea how is an internet board going to know with less qualified people and not being able to go for a ride or drive from another part of the country going to be able to tell you?

 

Never understood those identify/locate sound or noise threads, we aren't there what use is it? Can sometimes take me two people do silly things to find and track a sound or noise. Good luck I guess and let us know...

 

Tyler

Thanks for your response! Have a great day. It can only get better ****!

 

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[Thomcat]

If a shop foreman who rode in your truck has no idea how is an internet board going to know with less qualified people and not being able to go for a ride or drive from another part of the country going to be able to tell you?

 

Never understood those identify/locate sound or noise threads, we aren't there what use is it? Can sometimes take me two people do silly things to find and track a sound or noise. Good luck I guess and let us know...

 

Tyler

Because maybe a particular shop foreman never took apart an automatic tranny, changed a servo, adjusted a band or installed a Trans-Go kit in a valve body, replaced a clutch, dismantled a manual tranny to replace a shift fork, gear or bad synchronizer, pulled the heads off an engine for a carbon and valve job, replaced a timing chain, or done the scut work to save a buck over going to the stealership. More of a knowledge and skill set in many do-it-yourselfers who have ripped the guts out of vehicles out of necessity or taken hours to dope out a problem than someone hired to schedule service appointments and arrange billable hours to maximize dealer profits using the maximum amount of book hours using the minimal amount of actual work hours expended whose knowledge database may be limited to having a mechanic hook up a $5,000 proprietary analyzer only to find out "no applicable trouble codes". If one cares to invest in $500 for a hardcopy set of GM shop manuals they'll find many unit sections attempt to diagnose problems based upon references to noises when no codes are present: clunk, thuds, whines, clicks, snaps, growls, chirps, etc! And half these shop managers are nothing more than service consultants. So, I guess manufacturers should stop selling auto stethoscopes. Even if they have the proper tools the solution is instead of dismantling to replace a $50 part for $300 labor - hawk a replacement refurbished unit for $2000.

 

One shouldn't assume that those who read or post on forums have never lifted a wrench, many have and going by some of the service complaints posted one might say the same about the service received by "professionals". If a professional cannot offer at least a hunch what the problem might be after hearing a noise in the drivetrain, they have no business doing a drive along for listening in the first place.

[rickytickyshorth]

Thank you

 

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[rickytickyshorth]

Update: the tranny is coming out.

 

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[thejimmian]

My .02 - May not be a problem, could be modulation of the shift points as an adaption to driving habits.

 

Sounds like the action of the servos controlling the bands on the drums of the 2-3 planetary gear set which can graduate to a muffled thump if you bring the engine right up to the shift point and then release the gas and coast which will usually cause a harsh upshift engagement.

 

If there's no engine flare up before the shift point and solid engagement (no slippage) after shift, I wouldn't let them pull apart the tranny just yet, especially if the color/condition of the fluid is OK. I'd keep an eye on it to see if it worsens......you should still have plenty of time for future action under the warranty for a '15

 

 

gonna bet my internet street credz that it's not the bands/servos/drums causing any noises coming out of his 6L80e....

[rickytickyshorth]

Got my truck back. No more clicks and a bunch of new parts.

 

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