Replace EGR valve 03 eclipse 2.4L - 2003 Mitsubishi Eclipse Spyder

Is the solenoid opening to provide vacuum to the egr valve? Does the egr valve open when vacuum is applied? There are some tests posted at the link below.
Repair Guides Components Systems Exhaust Gas Recirculation egr System...

Yes it should be.

Try this YouTube link. Its a 2001 but maybe similar. Egr replacement on 2001 mitsubishi eclips gt

codes p0402--p0403deal with exhaust gas recirculation control circuit malfunction as well as the performance of this circuit check connections

egr transducer solenoid,,located at underhood, beside a/c idle up solenoid control, take alook at the vaccum hose at egr valve, its goes through the egr solenoid treansducer valve, picture later

A code P0401 most likely means one or more of the following has happened:

•The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced
•There is a blockage in the EGR (tube), most likely carbon buildup
•The EGR valve is faulty
•The EGR valve may not be opening due to a lack of vacuum

In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit.

•Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticeable difference in RPM's with the EGR open
•Clean out the EGR valve and/or tubing to remove deposits
•Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
•Replace the DPFE sensor (with a good quality / OEM one)
•Replace the EGR valve

Both need to be done

check ur egr valve -there are 3 parts to the egr --the dpfe[differential pressure feedback egr ]sensor//egr valve//actuator solenoid--++biggest problem with the egr valve is that it gets carboned up and the valve is stuck remove and clean the valve and tube with a carb cleaner and check valve for movement if faulty replace also check vacuum line and vacuum to egr unit

Check the code at advance auto parts, replace the PCV valve just in case. It is an inexpensive part, and if it is clogged will cause the engine to consume more fuel than normal. Also, check the EGR tube coming out of the EGR valve and going to the Intake Manifold. This clogs up with carbon, and is a very common problem that throws a code.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

The 2006 Silverado doesn't have EGR. They did away with it in '03 I believe.