Hard shift in 1st and 2nd - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Problems and Service Talk about any mechanical problems you are having

 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 04-09-2013, 12:52 PM Thread Starter
Forum Regular
 
Matt47336's Avatar
 
Join Date: Mar 2012
Location: Muncie, Indiana, USA
Posts: 85
Garage
Hard shift in 1st and 2nd

My car was doing one today and all of the sudden when I left work, it shifted really hard into first and second and then when it shifts into 3rd gear my traction control shut off and my service engine soon light turned on. Please help!!!!!!


Sent from AutoGuide.com App
Matt47336 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 04-09-2013, 01:11 PM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
Check TCM fuse first.

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

Never drive faster than your guardian angel can fly
Coby7 is offline  
post #3 of 5 (permalink) Old 04-10-2013, 03:29 PM Thread Starter
Forum Regular
 
Matt47336's Avatar
 
Join Date: Mar 2012
Location: Muncie, Indiana, USA
Posts: 85
Garage
I guess my intake came loose somehow but I don't see why that would cause it to shift hard.


Sent from AutoGuide.com App
Matt47336 is offline  
 
post #4 of 5 (permalink) Old 04-10-2013, 04:36 PM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
Because MAF is not working when there is a large leak, at this point ECM sends an error code to the TCM which in turn set transmission fluid pressure to maximum. Hence the hard shift.

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

Never drive faster than your guardian angel can fly
Coby7 is offline  
post #5 of 5 (permalink) Old 04-10-2013, 06:17 PM
Contributor
 
Join Date: Nov 2008
Location: Clovis, NM.
Posts: 360
Garage
^^^ yep,
all to try and protect the trany

07 G5 GT

Cherry's Tree


Randy
Now serving Boost
272whp 276wtq @10psi
Cherry GT is offline  
Sponsored Links
Advertisement
 
Closed Thread

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome