2011 Chevy Tahoe PPV

[Jerryrich0806]

Whats up I have a 2011 chevy tahoe ppv. Rides good only problem I'm having is there's a vibration at low speeds. Can someone help me out with this? Thanks.

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are going to have to give us much more detail about your issue, in order or us to assist you.

What is low speed?

Is the vibration audible, or do you just feel it?

Where on the truck does the vibration appear to be coming from?

Does the vibration change when you apply the brakes?

Does the vibration change when you turn the steering wheel?

 

[Miami-Dade]

Welcome from Miami Beach!

 

[Jerryrich0806]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are going to have to give us much more detail about your issue, in order or us to assist you.

What is low speed?

Is the vibration audible, or do you just feel it?

Where on the truck does the vibration appear to be coming from?

Does the vibration change when you apply the brakes?

Does the vibration change when you turn the steering wheel?

Speeds around 15 to 20. The vibration comes and goes around that speed. And you can hear more than you can feel it. Sounds like it's coming from the rear.

 

[Jerryrich0806]

Speeds around 15 to 20. The vibration comes and goes around that

speed. And you can hear more than you can feel it. Sounds like it's coming from the rear.

 

[CrashTestDummy]

At low speeds and constant throttle setting, DOD is a lot more pronounced, which is a possibility. It can become more pronounced if the mot mount(s) need replacing. Failed motor mounts, especially the driver’s side one, are a common issue with these trucks.

Verify you’re not just experiencing DOD, at low speeds.

 

[Sparksalot]

I noticed the same thing at that speed, and it definitely was the dod/afm engaging. I started using manual shift mode pretty quickly after that to inhibit the mode.

I bought a Range device soon after. Then learned about the ability to switch it off with a tune.

 

[Jerryrich0806]

Ok its happening with light acceleration

 

[89Suburban]

What is the speed of the vibration? Wheel speed? Engine or drivetrain speed? You try tow/haul mode to see if it goes away?

 

[Jerryrich0806]

What is the speed of the vibration? Wheel speed? Engine or drivetrain speed? You try tow/haul mode to see if it goes away?

Around 15 to 20 miles an hour may just end up taking it to the dealership and no haven't tried tow/haul mode.

 

[Jerryrich0806]

I noticed the same thing at that speed, and it definitely was the dod/afm engaging. I started using manual shift mode pretty quickly after that to inhibit the mode.

I bought a Range device soon after. Then learned about the ability to switch it off with a tune.

So the vibration goes away I need more information on this dod/afm

 

[Jerryrich0806]

At low speeds and constant throttle setting, DOD is a lot more pronounced, which is a possibility. It can become more pronounced if the mot mount(s) need replacing. Failed motor mounts, especially the driver’s side one, are a common issue with these trucks.

Verify you’re not just experiencing DOD, at low speeds.

I had a motor mount replaced (driver side)

 

[Jerryrich0806]

I noticed the same thing at that speed, and it definitely was the dod/afm engaging. I started using manual shift mode pretty quickly after that to inhibit the mode.

I bought a Range device soon after. Then learned about the ability to switch it off with a tune.

I changed driver side motor mount

 

[Jimgeorge]

At low speeds and constant throttle setting, DOD is a lot more pronounced, which is a possibility. It can become more pronounced if the mot mount(s) need replacing. Failed motor mounts, especially the driver’s side one, are a common issue with these trucks.

Verify you’re not just experiencing DOD, at low speeds.

What is DOD?

 

[CrashTestDummy]

What is DOD?

'Displacement on Demand'. Under light engine loads and under certain speeds, the engine goes into 4-cylinder mode. It can sometimes come across as a miss or vibration, depending on your sensitivity.

 

[Jimgeorge]

'Displacement on Demand'. Under light engine loads and under certain speeds, the engine goes into 4-cylinder mode. It can sometimes come across as a miss or vibration, depending on your sensitivity.

I get a vibration at 40 mph. It feels like a tire is out of balance bad.

 

[PPV-Monster]

Final answer: Motor mounts

 

[1BADI5]

Yeah I went with the solid mounts with poly bushings from Atomic Fab.

replacing those stupid OEM motor mounts every few years would be annoying

 

[Fubar0715]

I have been reading this and it just occurred to me-at low speed, I noticed a vibration too and thought it was the trans being fussy in the wrong gear going slow. In hindsight, since getting new mounts put in, I do not hear/feel that anymore....I swear, this site is sometimes like church cuz now I see the light!!!!!!!!!

 

[Jerryrich0806]

I have been reading this and it just occurred to me-at low speed, I noticed a vibration too and thought it was the trans being fussy in the wrong gear going slow. In hindsight, since getting new mounts put in, I do not hear/feel that anymore....I swear, this site is sometimes like church cuz now I see the light!!!!!!!!!

I'm getting a grinding/vibration in the rear. What causes this. It comes and goes.