Vibration after changing engine mount - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > The Track

The Track At the Track with your TrailVoy

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  #1  
Old 01-07-2014, 10:33 AM
JNuaman JNuaman is offline
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2007 Chevy TrailBlazer LS
Graystone Metallic 4.2L I6 2WD
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Unhappy Vibration after changing engine mount

Hi Dears,

I have TB 2007 2 WD.

I got vibration in my car when it is cold when I am on Gear D, after driving for 15-30 minutes the vibration goes, I were not getting vibration when I am on P or R or N
service center said that this is coz of bad engine mounts, the replaced my engine with ACDelco TB engine mount...

After this, the vibration of D Drive when the car is cold was gone, but I stuck in deep vibration when I am on P and N and D and R...

So now I am having continues vibration, what could the reason?
Do you think the normal acdelco engine mounts are okay for TB 4 WD, but not for my TB 2 WD?

What do you think the solution is?

Thanks
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  #2  
Old 01-08-2014, 09:51 AM
ddgm ddgm is offline
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2006 SAAB 9-7x
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I would do a cleaning of the throttle body first. There are good write-ups of the procedure here and on YouTube.
If that doesn't solve the problem, then we can move on to other remedies, like plugs and coils. Getting someone to read the codes, if any, would also be a great help.
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Old 01-08-2014, 11:54 AM
JNuaman JNuaman is offline
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2007 Chevy TrailBlazer LS
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Hi and Thanks for your reply.

I did cleaning the throttle but nothing changed, and I did computer checkup, I found no errors.

Actually I forget to add! when RPM is between 700 - 500 I can feel the vibration, once RPM is greater than 700 RPM I feel no vibration... Do you think this mention for something?

What plugs and coils do you think I have to look at it?
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  #4  
Old 01-08-2014, 12:15 PM
freddyboy61 freddyboy61 is offline
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2004 GMC Envoy SLE XL
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With a vibration at low RPMs, I would question if the shop actually used AC Delco mounts. I believe those were the OEM parts used. A vibration without a fault code being set usually means motor mounts.
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Old 01-08-2014, 01:19 PM
JNuaman JNuaman is offline
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2007 Chevy TrailBlazer LS
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Quote:
Originally Posted by freddyboy61 View Post
With a vibration at low RPMs, I would question if the shop actually used AC Delco mounts. I believe those were the OEM parts used. A vibration without a fault code being set usually means motor mounts.
Yes the motors mounts are installed newly, and it is AC Delco, so what do you suggest me to do?

Thanks alot
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