Q: Will not go faster then 20 MPH. on 2000 Cadillac Catera

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
I replace the ECM and I have no hose power at all.
What can I do.
(1) Answer
The ECM needs to be reprogrammed after it is replaced before it will work properly. Why did you replace it?
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