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GDI Replacement

zzsnowman

By zzsnowman
in Engines & Drivetrain

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zzsnowman Enthusiast

zzsnowman

Posted
Posted

 

 

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 Senior Enthusiast

davester

Posted
Posted

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...

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