Code P0430 - GMC Acadia Forum: AcadiaForum.net
 1Likes
  • 1 Post By kingsfr
 
LinkBack Thread Tools
post #1 of 8 (permalink) Old 02-28-2019, 01:34 PM Thread Starter
Newbie
 
Join Date: Jul 2017
Posts: 2
Code P0430

Hello. I have a 2010 Acacia SLT that recently threw a P0430 code for catalytic converter bank 2. I have had that code pop up once before, but it cleared on its own. Just recently replaced the spark plugs, cars running fine. Although it was running rich due to a disconnected duct. I took it to a mechanic who told me that this code doesn't necessarily mean that I need to replace the catalytic converter, but once he put it on the emissions tester, he came back and said it was the cc. My question is should I start with the o2 sensors before throwing all of my money into the cc? I have had no other sensor related codes just the P0430. Also, I have no way to test the o2 sensors myself. This would just be a hit or miss situation. If I do replace the sensors, which ones do I try? Do I need to change both sensors on bank 2? Thank you in advance for any advice you can give me!
teeter979 is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 02-28-2019, 01:56 PM
Super Moderator
 
speleos's Avatar
 
Join Date: Jun 2007
Posts: 17,117
Garage
Throw parts at it if you want, but you might still be replacing the catalytic converter. If your mechanic is knowledgeable, he should be able to guide you through whatever replacement parts are needed.

2007 Acadia SLT-2, 'HiYo' Silver outside, Ebony/Titanium inside, no NAV, no HUD, no errors
speleos is offline  
post #3 of 8 (permalink) Old 02-28-2019, 03:02 PM
Acadia GOD!
 
Join Date: Oct 2009
Posts: 8,346
cant tell you if your sensors are good/bad/lazy.

Can your mechanic get the parts for you at a decent price?

Can you change out the sensors yourself if youre tight on cash.

I posted the stuff below back on 8/13/2015.... Im now at 148,000.
And some people disagree on the time to change... or only change once theyve failed. Up to you
But since you have a 2010.. these are almost 4 yr old prices. see what you find.
But if I were to replace the Cats, Id also change the sensors. For all we know- it was their lazyness that helped bring the cats 'early' death.

-----------------------------------------

Im nearing 100,000- on my 2010.
Time to change the Oxygen sensors.
No CELs set or pending.
But they do get lazy.
This type of O2 sensor- recommended change is 90,000- 100,000.
There are 4 total on this vehicle. Pre and post cat.

I Looked up parts.
there are
AC DELCOS (made by Bosch)
Bosch
Denso
NGK.

The Densos and NGK are very expensive.
ACDelcos were about $8 more each- compared to Bosch (on ebay)
The lowest priced units were the Bosch.... but since the ACDelcos and Bosch are the same--- Im going with Bosch.
(Bosch is also the OEM units in the vehicle).

Thats what I ended up getting.
2 of each- as they should be replaced in pairs
Here are prices that I found. (tax not included)---- Aug 13 2015.

Double check part # to your model year...
Bosch 16088 Bosch 16089 total (pre tax)

NAPA- $53.99 $144.00 = $395.98
Oreillys- $41.99 $98.99 = $281.96
Autozone- $41.99 $98.99 = $281.96
Amazon- $31.49 $64.69 = $179. 42 <----- NOTE
Rock Auto $30.89 $61.79 = $185.36 <------NOTE

** Amazon has an additional 20% coupon on the 16089 for a limited time-- you have to click on the coupon so its placed in your cart. And Free shipping

** Rock Auto- you have to pay shipping.

I went with Amazon.

2010 FWD LT1-Gold Mist Metallic- seats 8.
Build Date- July 31, 2009-2nd day of Spring Hill 2010 production.
2013 Equinox 3.6L - 83,000
2010 Traverse 3.6L- 148,000
2003 Trailblazer 4.2L-181,500

Last edited by speleos; 02-28-2019 at 04:49 PM.
rbarrios is offline  
Sponsored Links
Advertisement
 
post #4 of 8 (permalink) Old 02-28-2019, 03:18 PM
Acadia GOD!
 
Join Date: Oct 2009
Posts: 8,346
pictures of location and how I removed them.

https://www.traverseforum.com/15-off...ment-cost.html

2010 FWD LT1-Gold Mist Metallic- seats 8.
Build Date- July 31, 2009-2nd day of Spring Hill 2010 production.
2013 Equinox 3.6L - 83,000
2010 Traverse 3.6L- 148,000
2003 Trailblazer 4.2L-181,500

Last edited by speleos; 02-28-2019 at 04:50 PM.
rbarrios is offline  
post #5 of 8 (permalink) Old 03-01-2019, 11:42 PM Thread Starter
Newbie
 
Join Date: Jul 2017
Posts: 2
Quote:
Originally Posted by rbarrios View Post
pictures of location and how I removed them.

https://www.traverseforum.com/15-off...ment-cost.html
Thank you so much this is exactly what I needed!
teeter979 is offline  
post #6 of 8 (permalink) Old 03-03-2019, 10:56 AM
Jr. Member
 
Join Date: Mar 2010
Posts: 93
I, too, had the P0430 code intermittently for about 1 1/2 years. It would come on for a couple of days then go out for a few weeks, then on for a couple of days again. The engine seemed to run fine and I didn't notice any issues with the engine. However, as time passed, the CEL stayed on longer and longer and I noticed that my fuel economy was getting worse. I had, also, gotten the P0420 code a couple of times. I got a scanner and found that the Long Term Fuel Trim in Bank 2 was high (positive). Bank 1 was elevated, but not as high as Bank 2.
When I brought the Acadia to my mechanic for an unrelated issue, I asked him to check it out. He verified the fuel trim issue and used a scope to look at the valves.. He told me that I had extensive carbon build up on the tops of the valves which was not uncommon in our direct injection engines. The carbon buildup was causing misfires , which, in turn was allowing unburned fuel to pass into the exhaust which damaged the catalytic converters. He recommended doing a chemical clean of the top of the valves. I let him do it, but he said it only cleaned about 50% of the carbon build up. He said the best way to completely clean all the carbon build up is to do a power walnut blast cleaning.
The CC for our Acadias cost about $700 each for the parts alone.
If you need to replace your CC, first determine why the CC was damaged to begin with or you will most likely damage your new one again.
speleos likes this.

2016 Buick Enclave Premium AWD Ebony Twilight Metallic w/ Choccachino interior , 7 pass. , Sunroof and Trailering Package
2010 GMC Acadia SLT-; AWD; Quicksilver w/Ebony Leather, 7 pass. seating, Duel Sunroof, DVD, Nav.
kingsfr is offline  
post #7 of 8 (permalink) Old 03-03-2019, 11:16 AM
Super Moderator
 
speleos's Avatar
 
Join Date: Jun 2007
Posts: 17,117
Garage
@kingsfr, if there was a prize for great posts, you would win one. The internal parts of a catalytic converter don't "wear out" per se, due to the nature of catalytic processes. They get coated and/or plugged with deposits when an engine doesn't run properly. If the running problem is caught in time, the catalyst bed can get 'rejuvenated' simply by driving the car and burning off the "crust."

2007 Acadia SLT-2, 'HiYo' Silver outside, Ebony/Titanium inside, no NAV, no HUD, no errors

Last edited by speleos; 03-03-2019 at 11:21 AM.
speleos is offline  
post #8 of 8 (permalink) Old 03-08-2019, 08:14 AM
Newbie
 
Join Date: Nov 2014
Posts: 3
Quote:
Originally Posted by speleos View Post
@kingsfr, if there was a prize for great posts, you would win one. The internal parts of a catalytic converter don't "wear out" per se, due to the nature of catalytic processes. They get coated and/or plugged with deposits when an engine doesn't run properly. If the running problem is caught in time, the catalyst bed can get 'rejuvenated' simply by driving the car and burning off the "crust."
I have also been dealing with a P0420 for the last few months.
I really don't think the engine is getting warm enough in my case. last night it took almost 5 miles of driving to get near the 180 degree mark.
it has been really cold here lately but it still should get up to the thermostat temperature faster in my opinion.
Do others see their car sit right on the 180 degree mark on their scan tool in the winter?

I think my next move is to change the coolant and thermostat to see if i can get more heat into the cats engine and cats.

Catalytic converters don't die, they get murdered by other problems in the engine...
Heg87T is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the GMC Acadia Forum: AcadiaForum.net forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome