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Jared D
Jared D, ASE Certified Technician
Category: Chevy
Satisfied Customers: 1219
Experience:  Shop Supervisor at County Fleet
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I have a 2008 Aveo. VIN # KL1TD66628B112645. I have 3 codes

Customer Question

I have a 2008 Aveo. VIN # KL1TD66628B112645.I have 3 codes
U0100When the check engine line comes on it will put the transmission in limp in mode. Where you only have 2nd and 3rd gear.
Submitted: 23 days ago.
Category: Chevy
Expert:  Jared D replied 23 days ago.

It sounds like the PCM connector is loose of corroded and tripping it into fail-safe mode.

Do you plan to fix this yourself?

Customer: replied 23 days ago.
I have already cleaned the connector with electrical clearer.
Expert:  Jared D replied 23 days ago.

Did you put it back together with dielectric grease?

Does the tach work?

Customer: replied 23 days ago.
I did not use dielectric grease, but will do that now and retry.
Yes tach works.
Expert:  Jared D replied 23 days ago.

Also check for signs of damage to any of the wires all the way back from the PCM as far as you can trace. These three codes are all communication codes with the PCM. Unless you have other codes stored also then I would say it has to be a connection issue.

Expert:  Jared D replied 21 days ago.

Let me know if you still need help on this. Please don't forget to rate.

Customer: replied 21 days ago.
I put dielectric grease on the PCM connections. As of now the issue has not reoccurred. I would like to wait a few days to make sure before I close this ticket.
Expert:  Jared D replied 21 days ago.

Ok. I just didn't want the question to drop to my timed out list. Rating doesn't close the question, by the way. I'll be here to help as long as you need.

Customer: replied 16 days ago.
I was informed late Friday that the Check Engine Light has came back on. I will let you know more when the vehicle returns.
Expert:  Jared D replied 16 days ago.

Sounds good.

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