I just completed the 0411 PCM swap on my 97 model Vortec 7.4. This engine is in an 89 suburban using a standalone wiring harness, from Painless. I have loaded the calibrations for the 2001 Express Van. The OS running is 12212156. I do not have a VSS hooked up since the 89 suburban didn't have one. I am using a 4spd (SM465) transmission.
Here's the issue: cranks and idles fine, but if I try to rev it up when it gets to a little under 2000 RPM it tries to die. I am wondering if the abuse management parameters are making it do this? If I ground pins 32&34 on the blue connector as if I were going to do a crank relearn, then it doesn't do this at all. Maybe the abuse management is kicking in because I don't have VSS hooked up, manual trans, and no park neutral or clutch signals?