Squeak when throttle is applied

ShamrockShooter · March 9, 2017

Where might one find this particular service bulletin?

2014 Chevy silverado Z71 DCSB w/Bilstein 5100 level

I downloaded it from safercar.gov but I don't remember the link. Here is the cliff notes version. http://sandyblogs.com/techlink/?p=3296

Knotsure · March 9, 2017

I downloaded it from safercar.gov but I don't remember the link. Here is the cliff notes version. http://sandyblogs.com/techlink/?p=3296

Thanks

2014 Chevy silverado Z71 DCSB w/Bilstein 5100 level

ShamrockShooter · March 9, 2017

They replaced mine once but the rattle came back. So a new one is on order. Supposedly gm made changes recently to help fix the problem. Fingers crossed. If not I will just go back to clamping it open and deal with the slightly louder v4 noise.

racetrk · March 9, 2017

My 16 has just under 6k miles and has developed the squeak. Anyone with this issue shouldn't be told to accept it as "normal".

sk · March 9, 2017

Where might one find this particular service bulletin?

2014 Chevy silverado Z71 DCSB w/Bilstein 5100 level

Also just a few posts above yours (#74):

http://www.gm-trucks.com/forums/topic/172013-squeak-when-throttle-is-applied/?p=1885612

ShamrockShooter · March 9, 2017

I was able to get the actual tsb on safercar.gov but you had to look through a 100 or so pdfs as the didn't really let you search or sort very well.

ShamrockShooter · March 9, 2017

Here is the TSB from 2014 (attached) . There is probably a much newer version available that supercedes this one.

Exaust Rattle SB-10070918-9133.pdf

Lemontree · May 1, 2017

I had the squeak on and off the gas in my 2017 1500. Started at 5k miles. The dealership just replaced the exhaust with a new one but it has no valve at all. Needless to say the noise is gone.

sk · May 1, 2017

I had the squeak on and off the gas in my 2017 1500. Started at 5k miles. The dealership just replaced the exhaust with a new one but it has no valve at all. Needless to say the noise is gone.

If it has no flapper valve you will get a bad "drone" sound when you cruise along in V4 mode (some have compared it to a helicopter hovering over your tailgate). Keep an eye on it and let us know how it goes.

Edited May 1, 2017 by sk

Lemontree · May 1, 2017

This is a picture of the one they installed under warranty. I put about 500 miles on it and did not notice any drone noise in V4 mode.

Justin101714 · May 2, 2017

Absolutely a bulletin on this concern. I've replaced tons of these exhaust systems for this problem. You don't have to bring them anything, they should be smart enough to search Service Information and find it. Make them do the leg work.

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sk · May 2, 2017

This is a picture of the one they installed under warranty. I put about 500 miles on it and did not notice any drone noise in V4 mode.

That is behind the muffler where the square flapper used to be. Look in front of the muffler. If they installed the new style you will have a round flapper before the inlet to the muffler.

Edited May 2, 2017 by sk

Lemontree · May 2, 2017

See that. You learn something new every day. I just climbed under it and it's in the front.

ZeKeef13 · June 20, 2017

Took my 2014 Silverado 1500 into the dealership for this issue. Told them what I have read on this blog. The representative said that his son had the same issue with his 14. Got a call hours later from a different rep and they said they couldn't duplicate the issue. I asked if I could drive and show a mechanic what I am talking about and they said no. That in itself is rediculous! I then went to Home Depot and spent $1.18 on the hardware listed in links above. From the second I started the truck I knew the issue was fixed. Before when you started it would give that same squeak. Went for a drive around the neighborhood and created the same perimeters where I would hear the noise. And to no surprise the noise was gone. I recommend this as a fix.

However, my question is has anyone experienced any issue with doing this. Also would you consider this a permanent or temporary fix?

Edited June 20, 2017 by ZeKeef13