Gordenf
 

1991 Bonneville SSE. When I press any window power switch, the DIC image disappears. Release the switch and the image reappears. What would cause this. Thanks.
Gord

I'm scratching my head on this one. The only thing I can advise you to check is the ground buses for corrosion https://www.gmforum.com/t278980/ and then clean and inspect the battery cables and terminals https://www.gmforum.com/t278927/.

If after you do that you still have a problem, come on back and let's see if we can find something else for you to look at.

I'm going with that as well, sounds like a ground issue.