Can someone please tell me what the following pre wired plugs are for on my 2008 Chevy express diesel, thanks

G400
C404
C411
C408
C407

 

Where are these in the vehicle?

 

They are located at the drivers side rear cargo door post

 

G400
C404
C411
C408
C407

G = Ground
C = Connector
400 = Luggage Area

The numbers tell which area of the vehicle, which hundreds 100, 200, 300, 400, 500, 600... etc. Each one for a specific area.

 

I Googled G400, and got a reference to a GM book, and a page in it somewhere in it's 900 pages, that talked about CNG. I always thought that CNG was an after market thing, but apparently not. The book it self was weird,in that there was no appendix, no table of contents.The only way I knew was that Google quoted this reference on their page.

 

cng is a compressed natural gas vehicle

 

Yes it is. I did not know this was a factory option. I always thought it was an aftermarket thing.

 

Here is what I found for G400: # 3
https://chevroletforum.com/forum/att...1&d=1502123788

C404: # 7
C407: # 9
https://chevroletforum.com/forum/att...1&d=1502124121https://chevroletforum.com/forum/att...1&d=1502124424

C408 No Results Found

C411: # 10, # 3

https://chevroletforum.com/forum/att...1&d=1502124753
https://chevroletforum.com/forum/att...1&d=1502124865