jasonpblair
TYF Newbie
- Joined
- Sep 11, 2023
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So my wife had just put the Yukon into drive, noticed a guy pulling out of the parking lot way too fast, so she put the Yukon in reverse almost immediately. Apparently the TCU didn't like the quick button press from Drive to Reverse, so it went into limp mode. She had to shut the car off and turn it back on, and now it runs and drives normally.... Except the check engine light is on with an 0700 Transmission code. I'm trying to clear the code with my OBD2 scanner, but it says to put the car into "run" with the engine off. I do this all the time with my other vehicles, but I can't figure out how to put the Yukon in "run" with the engine off! When I try to clear the code with the engine running, it says it cannot clear the codes while the engine is running. When I shut the engine off, the scanner says that it cannot communicate with the ECU while the vehicle is off, and it tells me to turn the ignition to the "run" position.
Can anyone help? How do I get the Yukon into "run" without the engine running? (2021 Yukon XL Denali, 3.0 Duramax.)
Thanks!
Can anyone help? How do I get the Yukon into "run" without the engine running? (2021 Yukon XL Denali, 3.0 Duramax.)
Thanks!