GDI Replacement

[zzsnowman]

 

 

Hi, I need 8 GDI injectors for a 2016, Sierra 1500, 5.3 NON flex fuel. The dealer said injectors 1,3 and 8 were bad, but best to replace all of them. That I agree with.

GM says I have 3 different injectors installed, low flow, normal flow, and high flow.

I read something from GM tech-link saying if the injector order were mixed up, the “normal flow” injector could be installed for all 8 injectors, but you could have fuel trim and emission problems.

 

With 4 injectors per bank, what injector do I need two of?

In what position does each injector go?

Are each injector banks the same?

 

GM Parts Giant.com has all 3 flows, new AC Delco injectors for $50 and $60.

Rock Auto does not have all three different injectors in stock.

 

I have read that a lot of people are having problems with their GDI’s.

The local GMC dealer mechanic said GM removed the GDIs from the 5 year/60K mike power train warranty and put them under the Bumper-to-Bumper 36K mile warranty.

He also verified what I knew about the fuel filter in the low-pressure fuel line, that is THE TRUCK DOES NOT HAVE ONE, DUH!!!

Anybody besides me think this is a problem?

 

I am sure most people on this site have changed fuel filters on their vehicles, BUT have you ever emptied the old filter into a clear glass jar? Even after a year you will NOT believe how much trash is in the filter.

For those of you who have a vehicle, trucks are easier, weather permitting on your next fuel filter change, will you empty the contents into a clean clear glass container. (A plastic soda bottle will work for a short time, but not recommended)? Then take and post the pictures?

 

I am seeing a Class Action Lawsuit. Is anybody else seeing it that way?

 

Thanks for any help, especially on the fuel injector placement in the rail.

 

Thank you, ZZsnowman

[davester]

The fuel filter now is part of the fuel pump assembly in the tank...  It's not great, but it's there.

 

If you are super-concerned about it, you probably could plumb an inline fuel filter into your setup relatively cheaply.  I did that for my truck and after a couple of years, replaced the filter, and it only had a small dirty spot on the filter...