Squeak when throttle is applied

Dale_K · August 31, 2016

I have the soot at the muffle drain weep hole too. I think it's normal. My truck isn't too bad - I really can't hear it when the windows are rolled up and the radio is on. I just put it in M5 when I'm driving around with the windows down. The truck doesn't use the V4-V8 system when in M5.

ShamrockShooter · September 1, 2016

Does anyone know if the gm aftermarket performance exhaust that has the flapper valve makes this same noise too? I was thinking about upgrading but not if it makes the same squeak/chirp

Brian2015 · September 5, 2016

I'm having the same problem with my 2016. I brought it up at my first oil change and the service guy told me "yeah thats how they sound"....so I spoke with GM Customer Care and told them about the exhaust. They reached out to my local dealer who ordered the 'lubrication' fix for the flapper. Well, it did nothing to correct the problem. In fact, my flapper valve stuck in the closed position and I got horrible fuel economy. I chewed thru a tank of 92 octane in less than a week (I usually go 2 to 3 weeks on a tank). I suspected the flapper was stuck so I got under the truck and sure enough I had a hard time opening the flapper by hand. Once I got it to move, it started to work again....for a couple days....then it stuck again....so every couple days before I leave for work, I lay a blanket on the ground and manually open/close the flapper to make sure it doesn't get stuck. This is a serious pain in the asphalt!!!! I cannot even fathom sitting down with my wife and trying to explain to her that we need to spend $1000+ on aftermarket exhaust....

I know to some of you, the noise is not a big deal. To me it is. I am really starting to regret selling my Ram...

ShamrockShooter · September 5, 2016

did you try clamping the flapper open? what was the "lubrication fix"? hadn't heard about that yet. Thankfully I can only hear the squeak with the windows open, so the 7 months a year it snows here, it wont be an issue.

Brian2015 · September 5, 2016

I don't really want to trade the squeak for exhaust drone in AFM.

ShamrockShooter · September 5, 2016

clamp it half way open, then you get the best of both worlds.

ShamrockShooter · September 7, 2016

I tried figuring how to clamp it so it would stay 25% open but still open 100% when u get in throttle. It won't work. It's 2 rotating squares so if you pin it partially open, when it rotates it will keep it from opening all the way.

Brian2015 · September 16, 2016

terrible design.....and I've been waiting almost a month for GM rep Julianne to respond to my private messages.

ShamrockShooter · September 16, 2016

I have had mine clamped open for a week. My computer MPG avg is 2 MPG less than what I have been getting. Not sure if it's related to the flapper valve being clamped open

Brian2015 · September 22, 2016

There is supposed to be an upgraded flapper valve that replaces the original. I have sent several messages to the GM Customer Care rep who was working with my dealer on this issue. It's been over a month and they are not responding to my messages.

I'm about to trade this truck in on a Ford and be done with this.

rickytickyshorth · September 22, 2016

That's what I thought. Got my exhaust replaced a month ago. Started squeaking after 3 weeks.

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Dnt · September 23, 2016

Fixed mine with a HyperTech Max energy 2.0 part 2000 hand held programmer. It has an option to set the AFM to only come on above whatever speed you set. I am currently using 50mph so no V4 below 50mph so far i see NO change in fuel mileage with the change. My issue was that with my dual exhaust at low speeds when it changed to V4 it sounded like a helicopter had landed on my tailgate. Not noticeable at higher speeds above 50mph I may set it a bit lower maybe to 40mph do not know yet.