Vibrations maybe bad motor mounts

[OR VietVet]

That test will help figure this out. I see rubber cracks but that can be normal and may not be a bad mount.

 

[avalonandl]

Normal looking with age.

 

[sctrl]

I think my rough idle symptoms match what described in this thread:

Rough idling 07 Yukon Denali...

I have a rough idle in my denali that seems to keep getting worse. I've had it to the dealer 2 times now. The first they suckered me in to getting a fuel system cleaning that I thought was what they consider a "top end cleaning". They basically just dumped fuel cleaner in the tank and sprayed...

www.tahoeyukonforum.com

 

[wsteele]

I think my rough idle symptoms match what described in this thread:

Rough idling 07 Yukon Denali...

I have a rough idle in my denali that seems to keep getting worse. I've had it to the dealer 2 times now. The first they suckered me in to getting a fuel system cleaning that I thought was what they consider a "top end cleaning". They basically just dumped fuel cleaner in the tank and sprayed...

www.tahoeyukonforum.com

So you think it is the cam pos sensor?

 

[OR VietVet]

Not on topic, but after reading that description post at that thread, I see a guy that bought and offered service and then had second thought and only then did he ask what he was getting for his money. You can assume all day and then call it "suckered me", is C-R-A-P. Even back in 2009, someone needs their hand held.

 

[sctrl]

So you think it is the cam pos sensor?

I don't know, a couple of posts at the end also mentioned cleaning the TB. So I'll look at it first. And using Sea Foam intake cleaner and Marvel Mystery oil cleaners.

 

[wsteele]

I don't know, a couple of posts at the end also mentioned cleaning the TB. So I'll look at it first. And using Sea Foam intake cleaner and Marvel Mystery oil cleaners.

If you have access to a scan tool (most of the $20 cheapie dongles will suffice), take a look at your misfire counts.

 

[sctrl]

That test will help figure this out. I see rubber cracks but that can be normal and may not be a bad mount.

Finally did the test in gear. Video below. I can see engine move to the side, but not sure if it's normal. First in D then in R.

 

[sctrl]

If you have access to a scan tool (most of the $20 cheapie dongles will suffice), take a look at your misfire counts.

I have OBDLink MX+. No fault codes. Are you talking about real-time monitors?

 

[OR VietVet]

IMO, the left one is bad and the right one is weakening. Not as bad as left but will follow soon.

My 05 Z71 is having me go thru a bit of hell right now with the mounts replacing, see my build thread, but yours may have better access or worse. Others here with an 07 and newer will know.