6.2 L86 cleaning throttle body

[SuperOldSchool]

I have yet to find a good video or description for cleaning a 2015+ throttle body.

 

For this engine/ electronic TB, has anyone personally cleaned it?

 

I know the plate should not be moved manually, so can you turn on ignition (not running) have someone depress the accelerator and will it open for cleaning?   Are folks removing them to clean it?

 

Again, lots of info on other years (older) , but what about a 2015+ 6.2?

 

I have 94k on my truck and think it’s probably time to see if it’s coked up.

 

Thanks!

[lucas287]

You're overthinking it! Pull the breather tube off, grab a lint-free rag (I use medical/surgical/OR towels) and douse it in carb cleaner and wipe away. I've never had any issues with this method. Move the blade wherever you need to!

 

And yes - I have an L86 also. 

 

Ignition on, motor off wouldn't render any blade movement anyways

 

Edited May 5, 2021 by lucas287

[rlcole321]

Seafoam makes a TB and Intake cleaner with a special nozzle for just that, see video

SEAFOAM SPRAY - SUPER CLEAN Your Motor! - YouTube

[SuperOldSchool]

15 hours ago, lucas287 said:

You're overthinking it! Pull the breather tube off, grab a lint-free rag (I use medical/surgical/OR towels) and douse it in carb cleaner and wipe away. I've never had any issues with this method. Move the blade wherever you need to!

 

And yes - I have an L86 also. 

 

Ignition on, motor off wouldn't render any blade movement anyways

 

I’m very confused.  There are tons of YouTube videos around having idle issues and having to relearn idle after cleaning ETBs.  What are they doing to cause this that you are not doing?

 

Some have no issues, others have issues and have to go through a relearn process.

 

Just want to avoid having a problem and being stuck having to go to a shop.

 

Thanks!

[lucas287]

6 hours ago, SuperOldSchool said:

I’m very confused.  There are tons of YouTube videos around having idle issues and having to relearn idle after cleaning ETBs.  What are they doing to cause this that you are not doing?

 

Some have no issues, others have issues and have to go through a relearn process.

 

Just want to avoid having a problem and being stuck having to go to a shop.

 

Thanks!

 

I certainly hear you! Not proclaiming to be an expert by any means. I've cleaned many DBW TBs over the years (across many different makes/models too) and I've never had an issue or EVEN thought about having an issue. Maybe if you went crazy and sprayed a half a can of TB cleaner and it all pooled up in the intake it might hard start and smoke a bit. If you're that worried, disconnect the negative terminal of your battery first.

[SuperOldSchool]

Thanks

[Black02Silverado]

Another product you might want to try is AMSOIL's Power Foam.  It works really well. 

Edited May 7, 2021 by Black02Silverado
spelling

[SuperOldSchool]

These sprays will not clean the back of the plate fully - I’m talking about elbow grease and taking it off and not drowning it in fluid, but wiping got down with a rag.  Too much cleaner will seep into the pivot pin and get into the inside.

 

lucas287- have you cleaned THIS throttle body by removing it and moving the plate?   You mention cleaning many over the years, but not specifically a 2015-2019.

 

has anyone removed it, moved it to clean it up and not had any idle issues.

 

Thanks!

[lucas287]

Yes, this specific throttle body. I have a 2016 L86 Silverado. I haven't removed it to clean it because you don't need to remove it. Just pry the plate open and go to town. If you feel so inclined, remove it and wipe it down. 

 

These throttle bodies aren't quite as sensitive as Gen 3 LS are prone to sticking and the IAC gumming up etc..

 

[SuperOldSchool]

Thanks!

[SuperOldSchool]

Really waited long on doing this…..

 

Cleaned it today.  Zero issues with high idle or having to relearn the idle…

 

I pulled the TB, gently opened butterfly and cleaned it out.   Got a new TB gasket too.  Pics in link below.

 

Thread '2015 Yukon Denali - Cleaned throttle body today' :

 

https://www.tahoeyukonforum.com/threads/2015-yukon-denali-cleaned-throttle-body-today.147839/

Edited April 14 by SuperOldSchool