Hello all,

I have an '06 Monte Carlo (3.9L)....while driving normal, 35 mph, the DIC displays "Service Traction Control" and the track control indicator comes on. No check engine light, no ABS light. Shifting between gears becomes very hard (like slamming into 2nd gear). While the message is displayed, used a generic OBD2 scanner and nothing showed up. Clearing history in current DTC's did not make the message go away. If I shut the engine off and wait 2-3 seconds to restart it, all the messages and warnings go away, car shifts normal.

Took it to the dealer today, they said there were no codes stored, probably because I erased the historic DTC's, though none were there. This has been happening more frequently....a few times a week now.

Any ideas?

 

the codes, if any, would be stored in chassis...."C" code.

Can your generic tool even access chassis or the ebcm? The dealer would have to look under history dtc if the problem is intermitant.

 

Thanks for your response!

The only code that was in there was a C0561, which the dealer said was a generic code that didn't mean anything.

 

The C0561 code means the electronic brake control module (EBCM) is disabling traction control because there is a problem with the engine control portion of the traction control system (TCS). The EBCM sets this code after a code has been set by the PCM or BCM. The next time it happens don't clear the codes and take it to a shop that has a TechII or SnapOn scanner and let them retrieve all the codes from history. The code being set by the PCM or BCM will tell them the cause of the EBCM setting the C0561 code.

 

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If you have additional questions or concerns, please feel free to contact me privately.

Louis
GM Customer Service