If your scanner can command it, then don't blame the ECM. The 0411 ECU'* are far better than the black box versions.

These POS GM trucks have had issues with the ignition switch causing all sorts of issues including your issue.

Blazerforum has a bunch of threads covering this.

You need to load test the circuits.

Thanks, I will take a look, because it has me baffled.

Thanks for the tip, I think I may find the answer on this page
https://blazerforum.com/forum/genera...97-s10-104645/