Having problems with your Chevrolet Impala ?
I need to change the transmission modulator valve on a 2003 Chevy Impala. I need help with the location of the valve and even steps on
how to change it. Thanks
Hello, the 2003 impala's dont have a transmission modulator valve. this transmission is electronic controlled by the power train control module. the transmission uses a pressure control sol. inside the transmission instead of a vac. operated modulator valve. if you are having a late harsh shifting problem, this would be more in the area of a pressure control sol. at fault
Repair Help & Product Troubleshooting for Chevrolet Impala
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