Having problems with your Chevrolet Cobalt ?

Having trouble with a 2005 cobalt. Sometimes car just goes crazy tranmission shifting weird codes are U2100,po700 and po742 think it is in the can bus but dont know were to start?

Posted / edited by AnonymousUser on : 17-01-2022

Answers :

U codes are network codes - issues with communication between modules. Start there, as these can cause funky things to happen and can set P codes, as well. Once the U code is resolved, clear them all and see if they come back.

U2100:
"Key on and the TCM (transmission control module) detected a loss of communication on either Communication Area Network (CAN) Bus line for one second"
Repair Help & Product Troubleshooting for Chevrolet Cobalt

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

Loading ...

  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || carrestorationshop.com || Terms of Use || Contact || Privacy Policy
Load time: 0.0093 seconds