2014 GMC Sierra ...P219A Code

Armani Mattingly · April 18, 2020

I have a 2014 GMC Sierra 1500 and i had a check engine light pop up with the code P219A. The code popped up on the reader saying “Bank 1 Air-Fuel Ratio Imbalance” and maybe 30 seconds later the same code said “Fuel Trim Cylinder Balance Bank 1”. I thought it was my 02 sensors but i did a live graph and all of them are working correctly. I cant figure it out. Anyone had this issue?

Edited April 18, 2020 by Armani Mattingly

Bizon14 · April 28, 2021

I have this problem too and like almost every other post I've seen, I can't find the root cause. It seems to only happen when the engine is cold. I even left the truck at the dealer for a whole week last winter and they weren't able to come up with anything.

Bizon14 · May 25, 2021

On 4/28/2021 at 6:04 AM, Bizon14 said:

I have this problem too and like almost every other post I've seen, I can't find the root cause. It seems to only happen when the engine is cold. I even left the truck at the dealer for a whole week last winter and they weren't able to come up with anything.

It started with P219a once ever few weeks or so when it was cold out. P219a started coming on more frequently, even when it was above freezing. Then I started getting P050D "Cold Start Rough Idle", and I even had a few codes for misfires. I replaced the spark plugs and wires a few months ago and it didn't change anything. I decided to try changing the fuel injectors once it got to the point where I couldn't go more than a couple days without the check engine light coming on.

I was shocked to see how dirty the old injectors were compared to a brand new one. It took about 5 hours to change the injectors with a little bit of help. So far, so good! I have also seen an increase in fuel economy.

PPK · May 26, 2021

did you ever run e10 in the truck? what grade - 87 oct or higher.. thanks!!

Edited May 26, 2021 by PPK

Skeeterhawk · May 26, 2021

Ok I found the right guys, talking about what is happening to my 2017 5.3l .

28568 miles and all injectors replaced. Embrassed to say how much I paid to have my P050D,P0300 codes from coming back. Truck is out of bumper to bumper of course. Yeah I gotta get tags for the thing so it's gotta pass emissions.

These where hard codes and lite the CEL. But the weird thing that happened just before the check engine light came on was a hard downshift when slowing to a stop and at cruising speed the cruise control would not set.

Well dealership called and said truck is ready to go. Drove it off with no problems. Parked it for 8 hours. Started it it up cold and same codes with CEL. Back to the dealership for 5 days. They say it's throwing codes all over the place. Had GM (supposedly) engineers involved to figure it out. Now they call me and say they put the truck back together and can't get it to throw any codes.

I get the truck back on a Saturday and drive it around town putting miles on it so the emissions will completes so I can get the truck to pass emissions tests for state inspection. Mind you I stop and start the truck at least 10 times that day. No problems. No pending codes on my code reader.

Start the truck cold on Sunday and get pending codes P0300, P050D on my code reader. No CEL, But the shift problem is back and cruise will not set. So I drive around a bit with this happening. Stop and restart the truck and it is fine. After a few starts the pending codes clear.

What is going on here?

Finally put enough miles on the truck. About 130 miles without the CEL coming back on. Yet all along the way I'm seeing these pending codes coming up on my code reader.Got it to pass emissions test.

Still have the shift problem and no cruise until after the truck warms up and a restart.

Should I have to live with this?

Edited May 26, 2021 by Skeeterhawk

Skeeterhawk · June 10, 2021

The dealership replaced all the fuel injectors again. Did not fix the problem. They now have replaced all the lifters. They are now test driving the truck for a few days to see if this will fix the problem. I'm not confident that this is the fix. We shall see.

evad · June 11, 2021

1 hour ago, Skeeterhawk said:

The dealership replaced all the fuel injectors again. Did not fix the problem. They now have replaced all the lifters. They are now test driving the truck for a few days to see if this will fix the problem. I'm not confident that this is the fix. We shall see.

am i to understand the dealer replaced all 8 injectors twice and all the lifters ?

test driving a few days?

IDK sounds like you need to find a better dealer

Skeeterhawk · June 11, 2021

34 minutes ago, evad said:

am i to understand the dealer replaced all 8 injectors twice and all the lifters ?

test driving a few days?

IDK sounds like you need to find a better dealer

Yep, actually I don't care at this point what they do to the truck. I paid for 5 injectors and GM ponyed up for what they said were 3 bad injectors. I will be filling a complaint with GM to get all my money back and file a complaint against the dealership thru the BBB. Then when I actually get the truck back it will be sold. Hopefully this will be the last thing I have to post on this site. Good riddens GM.