I am having problems with my L-80-E Trans and I need to scan my sensors.
I have a Xray XP240 that scans my other vehicle fine but not my Chevy.
I put in the correct info it asks for.
It asks for make: GM
It ask Year: '92
It asks for 8th digit in Vin#: F
It configures and says it is ready. I turn the key on like it says and try to scan and I get a "Vehicle Is Not Responding".
The ECM is working(no blown fuse and "check engine" light comes on before starting) and I can retrieve errors codes manually.(But that don't show any sensor readings.)

I have read else where on the forum that the '92 6.5L's were known for not being able to be scanned. Is this true? If it is, is there something I can do?

Any advice would be appreciated.

Thanks