My check engine light came on. Code said it was the EGR valve. How do I change? on 2005 Buick LeSabre

The code was P0455.

2 answers
always remember the codes only indicate the circuit that is failing not always the part. i rec you make sure its the valve b4 repl they are costly
you just take plug off and the two bolts holding it on then pop it off you will have to clean the gasket on the intake before you install new one