Truck started popping on the passenger side of the truck. Almost like a backfire. Looking at the code looks like the egr isn't closing all the way. Truck has 750000 miles on it. Worth cleaning the part or just get new? Use brake cleaner I assume. Lastly, if it warrants replacing is the napa/autozone/advanced auto units decent? Priced a dealer one and it is over $100 vs autozone's $40. Thanks.

 

Try rock auto. IMO I would replace it.