2015 Yukon Denali - Cleaned throttle body today

[SuperOldSchool]

Hello all,

Sharing some pics of cleaning my throttle body at 140k. I have never cleaned it before(on this truck) and was a bit apprehensive after reading so many say they had issues after doing so - high idle/ unable to get it to relearn…..I had no issues.

I bought a new TB gasket, and went for it….

1 First disconnected neg battery cable.
2 Removed intake cowling .
3 Disconnected ETB connector.
4 Removed 4 10mm bolts for TB
5 Cleaned plate and body with soft towel and TB cleaner- yes I did gently move the butterfly plate to get all surfaces.

It was dirty, but not awful. When I hooked it all back up an and started it, it idled normally and drove fine.

Maybe some are really aggressively moving the plate open and closed or getting cleaner in the pivot pin area/ electronics inside?

 

[_Barry_]

Looks good.
I've cleaned several over the years and never had any problem.

 

[Doubeleive]

I clean mine probably every 3-4 months and have for years on all of my vehicles never once had any issue, no need to disconnect the battery, with key off there is no power going to the tb

 

[OR VietVet]

Treat the throttle body with kid gloves and don't scrub it like a dirty frying pan in the kitchen sink, and it will be fine.

 

[Bagherra]

Just gave me something to do this weekend! What did you clean it with?

 

[OR VietVet]

Just gave me something to do this weekend! What did you clean it with?

Parts store. Throttle body cleaner.

 

[SuperOldSchool]

Just gave me something to do this weekend! What did you clean it with?

Throttle body cleaner. Avoid getting it into the pivot pins of butterfly. Move the butterfly very slowly and gently . Have fun!

 

[Bagherra]

Thanx!

 

[BlaineBug]

I clean mine probably every 3-4 months and have for years on all of my vehicles never once had any issue, no need to disconnect the battery, with key off there is no power going to the tb

I think it is best practice to disconnect the battery. I cleaned the throttle body on a 2003 Toyota Camry many years ago without disconnecting the battery and the idle was way off (idling way too high while in gear!) when I was finished until I reset it.

 

[Doubeleive]

I think it is best practice to disconnect the battery. I cleaned the throttle body on a 2003 Toyota Camry many years ago without disconnecting the battery and the idle was way off (idling way too high while in gear!) when I was finished until I reset it.

the perfect anology of why we can't do anything anymore. one thing happens and now there is a law that say's we can't do it anymore
95% of the time the reason instructions or manuals say "disconnect the battery" first is not because what you are working on is electrified, it's so that you don't "accidently" touch something else that is during the process and cause a problem. so in that sense yes it is a good practice, but not necessarily required.

 

[BMPNUGLS]

I did the exact same thing last fall at about the same mileage - never cleaned it prior. I couldn’t believe how much smoother it ran and the throttle response that it picked back up! It’s now on my routine maintenance rotation.

 

[SuperOldSchool]

Glad you saw results. I didn’t at all.

 

[OR VietVet]

Glad you saw results. I didn’t at all.

Maintenance is not designed/supposed to always supply results. It is to "maintain". If let go long enough, a maintenance item will reveal negative results.

 

[BeenChevy]

I remove and give mine a good cleaning every couple years, however in cold winter months if the intake hose is removed I'll clean it in-place using the following method:

-Turn the truck ON/ACC but not started (engine off)
-Use a floor jack to wedge the gas pedal firmly down where it will not move but open the throttle plate
-Use the step-kids or mother-in-laws toothbrush (whichever looks cleaner) and some CRC throttle body spray

I always notice a difference, especially if you find yourself removing oil blow-by on the bottom edge of the plate. Last step - casually place the toothbrush back exactly where I found it.

 

[Bagherra]

I was gonna ask did anybody notice a difference after doing this...

 

[OR VietVet]

I was gonna ask did anybody notice a difference after doing this...

If you notice a difference, great. If you don't....remember that maintenance is not designed to fix something, it is to maintain something.