17-NA-146 Service Park Brake Message and DTCs

I took my '17 Volt (purchased Jul '16) with 11k miles in today because the "Service Parking Brake" light was on. Looks like they did several things, but the service rep only said "Software update" was what fixes the brake service light... but looks like they at least re-routed my e-brake harness and re-mated the connector with new dielectric grease. Can someone take a look at my service sheet (attached) and tell me what else they did?

P.S. - I know that the 17197 "campaign" is and I was informed of that when I dropped off the car this morning. That was also fixed.