issue 2014 rough engine idle

tenpins77 · April 3, 2014

Had mine to the dealer, they didnt know anything about a shim or bulletin, but said they would not recommend adding pieces to a truck that didnt come from the factory. As long as it runs well and lights dont start coming on ill live with it.

fondupot · April 4, 2014

Had mine to the dealer, they didnt know anything about a shim or bulletin, but said they would not recommend adding pieces to a truck that didnt come from the factory. As long as it runs well and lights dont start coming on ill live with it.

It's an official GM bulletin....

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Gun Designer · April 5, 2014

I went to the dealer and they said there was nothing wrong. They said it is normal. I don't believe it. I have sat in other 2014 chevys and do not feel it at all. I took a video of it shaking a cup of water so that yall can get a sense of the amount of vibration I am having. the link is

. let me know what you think. 2 days ago my check engine light came on and onstar said it was something about the emission sensor so I gotta take it in again (and for the recall)

My 2011 with 5.3 and AFM has done this since day one. Dealer said it was how these trucks idle, but then they also said other things that were not true when brought in for issues. Mine was recalled for TPS, but never knew it until it stranded me. They said they also serviced the throttle body (cleaned). It idled good for around 1000 miles, now its starting to get rough again. Good luck getting a smooth idle out of that engine, you can't idle a V-8 at 500 rpm and expect it to run correctly.

surebuttercringe · April 7, 2014

I think all the direct injection engines have a TICK. (Note: "GM has these on a ticking timer and programmed to blow up at 100,001 miles) No seriously the direct injection pump and injectors are VERY noisy they made a lot of sound insulation efforts at the engine but it cannot be completely eliminated. Without the sound covers it would be unbearable. I would not purchase mine after hearing it idle until I started about 1/2 dozen 5.3's on the lot they all had the TICK noise, some were louder than others I would say that mine is around the middle.

On the main subject here of the engine vibration I am going to do that cup of water test on mine today. I find it fascinating that a 3mm shim could actually make a difference. i suspect that there may be some other issue along with the shim that is causing the vibration, maybe a fastener torque problem or frame mount misalignment on certain monday and friday build trucks....... What is your build date for your truck fondupot?

Well, this is comforting. Just bought my truck yesterday and my brother and I both noticed that the engine sounded louder at idle than any of our other recent vehicles. I had actually thought about having the dealership start up a few other 5.3s on the lot when I went to pick up my plates just to see if it was common throughout just like you did.

CAtaylor · April 7, 2014

Yep I can here mine ticking from 25 yards away. My truck is a little higher up though so that is what I account it to. On the rough idle; has anyone that experienced this checked their plug wires? Mine would do this occasionally with no check engine lights or codes, didn't think anything about it because my 13 always had a rough idle. The #6 plug wire finally came the rest of the way off and I got a check engine light, no issues since i put it back on tight. Took it 5K miles to finally pop the rest of the way off though and give me a code. Just an idea.

juanlpadilla · April 17, 2014

My truck idles rough every once in a while; it happens more after a long drive (1hr drive) or after it has really warmed up. And yes, it has turned into an obsession. So, my question is, does the shim really work? Im thinking about taking my truck in to get it done. I called the dealership and they have heard of the bulletin and can get it done in one day. Thanks!

WhiteLTZ14 · April 17, 2014

My truck idles rough every once in a while; it happens more after a long drive (1hr drive) or after it has really warmed up. And yes, it has turned into an obsession. So, my question is, does the shim really work? Im thinking about taking my truck in to get it done. I called the dealership and they have heard of the bulletin and can get it done in one day. Thanks!

I had the bulletin done and it help quite a bit.... its not as bad as it was. Before my hand would shake along with the truck but now since it got better with the shimming i don't think about it. If that makes sense. It took them about an 2 and half to do i believe

MMC · April 18, 2014

They all tick. http://sandyblogs.com/techlink/?p=3134

reldridg · May 1, 2014

Hi there I was wondering if anyone has a copy of the bulletin or bulletin number for this issue? I was at my dealer the other day and they said that the only bulletin about this issue is that it is normal and nothing should be done.

So if someone can point me towards a bulletin number that would help alot.

Thanks.

reldridg · May 21, 2014

any one out there have an idea about the shim bulletin number ?

janecka1 · May 22, 2014

any one out there have an idea about the shim bulletin number ?

I tried looking for the paper work they gave me, but I couldn't find it. If you want, you can call Cecil Atkission in Kerrville tx. (830) 257-6121 ext 2. Ask for oscar or Kevin. They should be able to tell you. My name is Jason Janecka and I brought mine in in jan.

On other note, I have the 4.2 in non touchscreen display. Everytime I start up my truck, a warning comes up on it about (and I'm paraphrasing) Warning: taking yours eyes off the road for too long is dangerous. It won't automatically disappear, you HAVE to hit ok to to clear it off the screen. It annoying to have to do this EVERYTIME I drive somewhere. Does anyone have the 4.2 non touchscreen display? If so, does y'all's always show that warning?

fondupot · May 23, 2014

any one out there have an idea about the shim bulletin number ?

I'll look at my paper work again. But I don't recall them giving me the number.

reldridg · June 3, 2014

Jason,

Thank you for that information, I will call them today. I have also attached a video that shows the vibration at idle in my vehicle now that it is getting warmer here in Idaho the vibration is getting worse. Mine actually never shows a warning, but I have the larger screen.

I tried looking for the paper work they gave me, but I couldn't find it. If you want, you can call Cecil Atkission in Kerrville tx. (830) 257-6121 ext 2. Ask for oscar or Kevin. They should be able to tell you. My name is Jason Janecka and I brought mine in in jan.

On other note, I have the 4.2 in non touchscreen display. Everytime I start up my truck, a warning comes up on it about (and I'm paraphrasing) Warning: taking yours eyes off the road for too long is dangerous. It won't automatically disappear, you HAVE to hit ok to to clear it off the screen. It annoying to have to do this EVERYTIME I drive somewhere. Does anyone have the 4.2 non touchscreen display? If so, does y'all's always show that warning?