New guy in New Orleans

[Dagget]

So, I bought a '92 chevy p30-based motorhome with 454 TBI. Decided to get an ASDL cable and some software to see what's going on. Not being sure what I was looking at, I pulled the whole ECM module out of the dash to find the ECM number (now that I know it is printed on the sticker, I wouldn't do that again). After re-installing it, the SES light is on all the time and I can't figure out how to reset it. TunerPro isn't showing a malfunction code.

ECM is 16147060. Anyone know what code I might have tripped pulling it out, and how to reset?

[ony]

if the light was not on before you removed the ecm you might have bent some of them little prongs that go into the connector that plugs into your ecm, they bend easy sometimes as you try to start the plug in. un hook the negative battery cable for about 30 seconds,i do the [unhook] most of the time when I am messing with electrical things on vehicales.