Combination Brake/transmission Problem - 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 4 (permalink) Old 11-11-2015, 05:45 PM Thread Starter
Newcomer
 
Join Date: Oct 2015
Posts: 3
Combination Brake/transmission Problem

Have an 2007 Cobalt 2.2 that is stuck in park. This has happened previously, and the culprit was a blown fuse in the passenger footwell fuse block. I don't remember exactly which fuse was blown last time, but this time the one blown was #9, a 10A fuse for the brake lamp circuit. Any attempt to insert a new one just results in it blowing the moment the contacts touch the terminal. At this point, I have replaced both brake light bulbs AND the switch at the top of the brake pedal, and inspected the wiring to the extent that it can be readily seen, all with no effect on the short (wherever it is).

This issue occurred spontaneously without any other related (or even suspicious) issues leading up to it. The car was running fine the previous night.

Any ideas?
mcaver1 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 11-11-2015, 06:39 PM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
If it burns before you even press the pedal, this means the red with white stripe wire that leaves pin "E1" on "C4" (driver's side of BCM) that goes to the brake switch is touching ground somewhere. It is only 1.4 meters long so you should be able to trace it and verify that it isn't frayed along it's route.




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 4 (permalink) Old 11-23-2015, 07:42 PM Thread Starter
Newcomer
 
Join Date: Oct 2015
Posts: 3
Thanks!

Just wanted to say thanks, Coby.....it took me quite a while to get back to this project, and even more time to find the short, but it involved exactly the wire you predicted. The wiring harness was pinched behind one corner of the BCM, and 170,000+ miles of pressure and friction had finally worn the wire through.

Thank goodness it was in a fairly accessible location.....inspecting all of that wire's 1.5 meter length would have been a lot more challenging. As it was, it was an easy fix once I found the short. I've rerouted the harness away from that particular pinch point, so there shouldn't be any repeats.

Thanks again!
mcaver1 is offline  
 
post #4 of 4 (permalink) Old 11-24-2015, 03:12 AM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
You are very welcomed, that's what I'm on forums for. "To help"

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  
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