do you guys replace EGR valves on this car and how much will it cost on 1996 Cadillac Seville STS

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car was repaired at dealership this is all that is left that needs to be done
(2) Answers
If you or a friend are just a little car savvy, part @ NAPA about 170.00. To install, two bolts and a wire connector. Clean old gasket off of engine and replace the gasket, comes with the egr valve.
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