Duramax 6.6L Glow Plug Replacement

My 2009 3500HD with 6.6L Duramax engine suddenly threw a P0674 code.
P067x is a glow plug code. The last digit (1 through 8) represents the cylinder number with the failed glow plug.
I bought this truck new in 2009. I never drive it in the winter, so it never gets exposed to harsh road chemicals such as road salt and deicer, therefore nothing was corroded in the engine bay. It was a very easy task to replace the glow plug.
If the glow plugs or the nut and stud that attaches the wire are corroded, it’s very likely the stud will snap off, or the glow plug body will snap. If the glow plug snaps off, it’s a very tedious task of extracting it from the engine.
Genuine GM (AC Delco) Glow Plug: amzn.to/46UxhU5
Replacement nuts: amzn.to/3O80bqW
Set of 8 aftermarket glow plugs: • RV Essentials: Items t...
Oil Filter: amzn.to/40e1Lxa
Fuel Filter: amzn.to/3QAWXic
My Official Amazon Page: www.amazon.com...
As an Amazon Associate I earn from qualifying purchases.
The Amazon links above are affiliate links and any purchase you make using them supports my channel at no extra cost to you, and helps fund future motorcycle and camping adventures!
*This channel is for entertainment purposes only. We are not RV or Motorcycle experts and are not making recommendations. We share our opinions and what works for us, but you should do your own research and make your own decisions before undertaking projects described in our videos.

[@lockingmailboxinstallers]

What’s the different in the gs? Like 9g and 6g etc glow plugs?

[@deltabravo1257]

I don't understand the question. I don't know the term "gs", "9g" nor "6g"