Car Shudders when switching gears under load. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Bonneville GXP/ Northstar Powered Cars Discuss your Bonneville GXP and/or any other Northstar powered Olds or Cadillac... Including the 3.5L Twin Cam V6 (Short Star ) 4.0L and 4.6L Northstar V8's. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 05-05-2009, 11:22 AM   #1
Junior Member
Thread Starter
 
Join Date: Apr 2009
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Epr7339 is on a distinguished road
Question Car Shudders when switching gears under load.

Ok so my car is going in the shop friday....When the car is first started in the morning and im driving from 1st to 2nd it shifts ok but very tight? I dont know if thats the right word. After I have been driving for a while when the car is changing gear the car like shudders not bangs just shudders. its really annoying. Any ideas? Also I have a ticking coming from behind the drivers firewall I think that started after the shuddering issue. In the real cold weather in the winter when i went from P to R it would bang. So stressfull.
Epr7339 is offline   Reply With Quote
Old 05-05-2009, 11:42 AM   #2
Senior Member
True Car Nut
 
Purplehazeir's Avatar
 
Join Date: Sep 2008
Location: Arlington, WA
Posts: 7,979
Thanks: 0
Thanked 1 Time in 1 Post
Purplehazeir is on a distinguished road
Default

Check your tranny mounts. Also, when was the last time you changed your tranny fluid and filter?

Please add your year and trim of your vehicle to your signature line. That way when you start asking questions in other areas of the forum, we all have a better idea on how to assist you. Click on "Quick Links" above, go down to "User Control Panel" and then click on "Edit your Signature" It'* pretty straight forward from there.
Purplehazeir is offline   Reply With Quote
Old 05-05-2009, 11:46 AM   #3
Junior Member
Thread Starter
 
Join Date: Apr 2009
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Epr7339 is on a distinguished road
Default

Sorry About that...I have not changed the fluid as it only has 39k on it and I did not think it was due yet. But I will if that may help!
Epr7339 is offline   Reply With Quote
Old 05-05-2009, 12:14 PM   #4
Administratus Emeritus
Certified Car Nut
 
GXP Venom's Avatar
 
Join Date: Jan 2006
Location: Purgatory, Pennsylvania
Posts: 16,538
Thanked 7 Times in 4 Posts
GXP Venom is on a distinguished road
Default

Doubt it will help @ 39K miles. It sounds alot like a engine mount broke. It has happened infrequently with the GXP'*. Have someone set the e-brake and hold the pedal brake down hard and lightly touch the accelerator. See if you have alot of drive train movement. I will stress the lightly part here again and make sure it'* someone with a brain behind the wheel.......
GXP Venom is offline   Reply With Quote
Old 05-05-2009, 12:26 PM   #5
Junior Member
Thread Starter
 
Join Date: Apr 2009
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Epr7339 is on a distinguished road
Default

haha yeah that could be bad....Well its going in the shop anyway so i really hope thats all it is...Now the ticking...Could it be that the stress on the rest of the parts from a bad mount do harm to the exhaust like the manifold? Like ticking is herd very light when first starting very sofe..but when in gear and pressing gas fills whole cabin....put it in N and press gas and you just hear the engine purrr.
Epr7339 is offline   Reply With Quote
Old 05-05-2009, 04:17 PM   #6
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Check your front drivers side trans mount. It'* under the exhaust manifold. If that comes loose it will shutter.

Edit.

Opps, my bad, wrong engine
Danthurs is offline   Reply With Quote
Old 05-07-2009, 01:49 PM   #7
Junior Member
Thread Starter
 
Join Date: Apr 2009
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Epr7339 is on a distinguished road
Default

Car is in the shop right now I will let you know what they say!
Epr7339 is offline   Reply With Quote
Old 05-07-2009, 02:20 PM   #8
Member
Posts like a V-Tak
 
Join Date: Apr 2009
Posts: 65
Thanks: 0
Thanked 0 Times in 0 Posts
kevinp is on a distinguished road
Default

i am also guessing its the mount
kevinp is offline   Reply With Quote
Old 05-07-2009, 07:11 PM   #9
Junior Member
Thread Starter
 
Join Date: Apr 2009
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Epr7339 is on a distinguished road
Default

Well they traced the shuttering through the gears to a bad front engine mount. Orderd part...Ticking, they are going to look at after they get that installed...But thinking it may be exhaust related.
Epr7339 is offline   Reply With Quote
Old 05-07-2009, 08:05 PM   #10
Senior Member
True Car Nut
 
Purplehazeir's Avatar
 
Join Date: Sep 2008
Location: Arlington, WA
Posts: 7,979
Thanks: 0
Thanked 1 Time in 1 Post
Purplehazeir is on a distinguished road
Default

Quote:
Originally Posted by Epr7339 View Post
Well they traced the shuttering through the gears to a bad front engine mount. Orderd part...Ticking, they are going to look at after they get that installed...But thinking it may be exhaust related.
Good to hear that it got figured out. Tranny and engine mounts create all sort of weird noises and performance issues when they go.

If the ticking is exhaust related...yiiippppeee for you!
Purplehazeir is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Tranny Shudders under partial throttle Company 2000-2005 12 07-28-2009 12:37 AM
1994 Bonneville shudders when driving/changing gears?? dchk100 1992-1999 3 02-23-2009 05:32 PM
Vents switching to defrost on hills or under power brminder 1992-1999 3 07-14-2005 12:39 PM
Update: figured out popping under load in all gears/misfire Brian95Blown 1992-1999 6 11-30-2004 07:02 PM
Car shudders in high gear under load - transmission? ssewannabe 1992-1999 43 05-09-2003 12:32 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:06 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.