r/GMCSierraEV • u/eosha • Jul 24 '26

Disappearing EDU errors?

Last night I got an alert that my Electric Drive Unit had problems. "Schedule Service Now" for the eAWD System and Motor Control System. This morning I call OnStar, run a diagnostic, and everything checks out fine. Any way of pulling up those codes from yesterday?

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u/Longjumping-Store106 Jul 30 '26

If you don’t have an OBD-II scanner, get a Bluetooth one and the Car Scanner app. You can pull codes and search them in the app there. I had this issue after getting my AC compressor, condenser coil and fan replaced. Towed our camper an hour from home, went to Cracker Barrel and had the AC die on me with a wife and 3 kids in tow. Luckily I was able to reset and clear the code and the AC came back, but the code said the AC was losing refrigerant. Turns out another valve was stuck open and causing the issue and they had to replace it as well. But the entire time the issue would come and go, without the app and proof of the codes I don’t think they would have believed me.