Fuel pump comes on when I open door

[Dusterpilot]

2017 Silverado 1500, 1008 miles... noticed that fuel pump runs for a second when I open drivers door, is this normal? I'm also having surging issues when under light acceleration on a hill... anyone else have this problem? My 2014 didn't do this...?

[Albytruck]

To my understanding the pump is just priming when the door is opened. Does that on my 2017 also, normal.

 

I am also having surging or shuddering during light acceleration.

 

Hopefully more will chime in on the surging.

Edited January 29, 2017 by Albytruck

[GMC2015]

The fuel pump priming when you open the door is a new feature on the 2017s, probably to shorten the start times on the DI engines.

 

As for the surging, I've seen some posts on people having to replace the torque converters on brand new 2017s because of that.

[Mark Diedrich]

Is the shudder at any speed? or primarily between between 35-65 (if your above or below it doesn't do it)? is your tach "bouncing" a few hundred rpm at the same time?

If it's only between those speeds, it's probably the torque converter like you stated....

Yes, the fuel pump is normal when you open the driver's door.

[87shelbycsx]

Mine does the same thing, I do know the 6.2 has a mechanical pump. It has a roller and runs off the cam. I'm working on the launch of the 6.2 in Spring Hill,Tn. And happened to notice it while delivering parts.

 

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[87shelbycsx]

I think the surging is probably the trans. How new is it..mileage? Fuel injection learning driving habits.

 

 

 

 

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[Albytruck]

Is the shudder at any speed? or primarily between between 35-65 (if your above or below it doesn't do it)? is your tach "bouncing" a few hundred rpm at the same time?

If it's only between those speeds, it's probably the torque converter like you stated....

Yes, the fuel pump is normal when you open the driver's door.

 

Shudder is not restricted to any speed. No, the tach does not bounce, it is definitely something that can be felt though.

1200 miles 2017 Silverado, 5.3, LTZ CC 4x4

[Sierra706]

I get a rpm surge from 2nd to 3rd gear occasionally. 95% of the time it happens it's on the same little hill as I'm pulling out of the gym. It's about a 1000k rpm surge during gearchange.

 

 

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[qwank]

GM knows about the surging but there is no fix for it yet. Bulletin # PIP5457B

My truck does it too, I didn't notice until a customer brought one is and complained about it.

 

My fuel also primes when I open the door. DI engines take longer to fire up due to having to build high pressure and I think this is a way to shorten crank time.

[Colossus]

And people wonder why the batteries don't last 4+ years anymore. All this electronic crap.

[foghorn23]

Thanks for all in the info in this thread. I wasn't sure what I was hearing when I opened the door or my 17 Sierra. As noted, I certainly didn't have any sounds like that in the 14. Strange how hearing "normal" on this forum is a whole lot more believable than hearing it from a tech; but it is.

 

Thankfully I haven't noticed any surging, but my truck was a late November build so maybe they got it right... Fingers-crossed.

Edited January 29, 2017 by Foghorn17

[tbarn]

" Strange how hearing "normal" on this forum is a whole lot more believable than hearing it from a tech; but it is."

 

Really?

[15_silverado]

GM knows about the surging but there is no fix for it yet. Bulletin # PIP5457B

My truck does it too, I didn't notice until a customer brought one is and complained about it.

Mine does this too, 2017 5.3 6 speed

 

Do they think it's the torque converter or something else?

 

Does anyone think this surging is causing any damage to the transmission? ; Would it be better to make the transmission downshift to stop the surging?

[qwank]

I'm not sure what they think/ I'm hoping it's just going to be updated software for the ECM or TCM.

My truck is a 6 speed but the customer's truck at work was an 8 speed.

[Bayou-AllTerrain]

Mine does the same thing, I do know the 6.2 has a mechanical pump. It has a roller and runs off the cam. I'm working on the launch of the 6.2 in Spring Hill,Tn. And happened to notice it while delivering parts.

 

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I'm not so sure of that. I have a 2017 w/ 6.2 and I have the same fuel pump priming when I open the door.

 

 

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