Obd2-1 questions

[phantom309]

My 94 pickup has reached the end,..so i bought a 99 suburban.
I have the 5068 pump on the pickup, and i have a custom chip for it,.
To get a "tune" for the obd2 is out of budget,.
So the question is, what would be in order to convert the 99 back to obd1?

I am getting the burb on saturday, i have never owned an obd2 truck, are the ecm's totally different or similar?

Thanks
Nick

[DmaxMaverick]

The OBD's are completely different. No interchangeability. You would have to downgrade the entire harness (cheaper to just buy another pump). Your 5068 pump will probably work, as is, though.