I don’t drive my car as often as I’d like to and only have 6000 miles on my 2022. In recent weeks I noticed slight surging from a complete stop but blamed it on interaction of my Soler controller with the DCT controls. Yesterday the surging became more violent and caused the car to stall. This happened a few times over a couple miles. I pulled into a parking lot turned the car off and cycled the accelerator from 0 to full throttle a few times. When I attempted to return home I found the troubles had only gotten worse with surging and stalling after each stop and even or odd gears present. After finally getting home I left the drivers door open and gave it a rest.
This morning the cel remained lit and my scanner showed a P0700 code with one other code that I failed to note. I had a similar incident back when the car was less than a year old. That incident was a trans high temperature with reduced power output(I believe). I cleared that code with my OBD scanner and the problem never returned. Just as I did before, I cleared the code and drove it around the block. CEL was cleared and surging stopped.
I think if there were actually a problem with the DCT the code might be cleared but the problem(surging and stalling) would continue if there were actually a problem with the DCT the DCT. It seems the C8i s a very “glitchy” car due to all the interacting microprocessors. I will update this thread if the problem returns, but I think it is unlikely.
i would recommend keeping and scan tool in the car at all times so that you can clear codes and avoid being stranded in the middle of nowhere with a glitchy car that only needs to have some DTC codes cleared. I follow the forum pretty regularly and don’t recall anyone clearing a code and causing damage to their car or having the dealer give them trouble for doing so.

 

My concern with clearing a code would be that the problem is gets pushed out beyond warranty to a point where clearing the code no longer fixes the symptoms. On the other hand the dealer may do the same thing or misdiagnose the problem and do a bunch of unnecessary work.

 

If the problem is active, the DTC will come back right away. That's actually how their diagnostic procedures are written for the most part. A remedy is attempted, such as a Hydraulic System Flush, the DTC is cleared, if it does not come back, the procedure is terminated. If it comes back, then the tech proceeds to the next "remedy" - maybe replacing the filter or fluid - whatever the procedure calls for, all the way up to replacing a component (valve body) or the transmissions.

I guess you know by now, you should be recording the codes before you reset. P0700 conveys no information - the its the request to illuminate the MIL on the DIC. The other code was the important one. Also, codes remain in history for a while, but not forever. If this were happening to me, I would be taking it to the dealer. There is a good chance you masking a problem that needs to be addressed - not always - but I would want it checked out.

 

Yes, and on a 2022 car, you only have a year or less of warranty coverage for the drivetrain left, soon a possibly very expensive repair may be all on you.
Has the transmission servicing been done according to the maintenance schedule???

 

I highly doubt the Soler controller would affect the DCT "controls" in any way.

 

DCT maintenace has been performed per GM requirements

 

so the problem is the p0700 is just the code to trigger the CEL. The other code is what matters and once you clear it can no longer tell what is happening. But I get it you needed to get home and I’ve done this myself. The most common failure is valve body followed by parking pawl but if you are moving when this all happens and had one gear side (even or odd) it’s usually VB in my experience but without the codes it’s hard to tell. It will probably come back but not always. Sometimes you can try to spearhead this with filter/fluid and flush procedure assuming it’s a VB issue and you may get lucky. The parking pawl issue will likely get worse but this is more rare and the car won’t shut down or thinks it can’t go into park.

 

Meaning? You drained and filled the transmission and have not replaced the transmission filter?