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

I replace the ECM and I have no hose power at all. What can I do.

by in Richmond, VA on May 21, 2010
1 answer
ANSWER by , May 21, 2010
The ECM needs to be reprogrammed after it is replaced before it will work properly. Why did you replace it?