Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
hi there, I am Cam. If I understand you correctly, this all started when you changed your blower motor and it was running perfectly before? And that you unplugged the ECM on top of the heater to get at your blower?If so then I believe this may be an issue with the ECM or connections. I cannot see how you unplugging the ECM would effect the sensors or such on the engine. I suggest you pull the ECM out again, double check that in your repair you did not nick a wire or damage a terminal on the connector. Also try tapping on the housing of the ECM with the handle of a screwdriver to see if you can trigger something.Try this and
And get back to me.