The code was P0455.
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2005 Buick LeSabre Question: My check engine light came on. Code said it was the EGR valve. How do I change?
Answer #1goodguy October 12, 2012, 02:28Master
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
Greg's Orange Auto (13269 Answers) , Orange, CA - (714) 361-9386globalhelper October 12, 2012, 06:27Master
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