'15 Yukon 5.3 Fuel Injector HELP

Christoph · Jul 10, 2020

Looks like I need new injectors. I will tackle this project myself as I cannot afford to pay a dealership. Upon researching part numbers for AC-Delco Injectors (GM 12668390) I'm curious if anyone here might be familiar with any aftermarket injectors that are 'as good' or better than OEM. I see a lot of cheap sets on Amazon and eBay but I'm skeptical.

Also, I need the fuel line, intake gaskets, .....am I missing anything?

FYI: I am replacing all injectors since I have 100K miles on them and if I'm pulling the intake... I'm not chancing on just replacing one. Plus I plan keeping this rig for another 100K. Also GM updated the replacement injectors to an improved version.

I have the following codes: p050D; p306, p219b. I have a slight miss at startup which goes away once at operating temperature. Everything I've read about these codes points to a injector. I've tried Techron twice and always run top tier gas but with no changes. I might swap the #6 coil and see what happens but a tech alrerady told me it's an injector(s).

Thanks for any and all advice!

Gmfm · Jul 11, 2020

The 16-17’s have a 10 year 150k mi injector special warranty. Try searching or call a dealership to see if 15’s have any special warranties issued by nhtsa.

Christoph · Jul 11, 2020

Gmfm said:
The 16-17’s have a 10 year 150k mi injector special warranty. Try searching or call a dealership to see if 15’s have any special warranties issued by nhtsa.

This is what I found...not looking good for me or most other people...

Condition:

Some 2016 and 2017 model year Cadillac Escalade, Cadillac Escalade ESV, Chevrolet Silverado,
Chevrolet Suburban, Chevrolet Tahoe, GMC Sierra, GMC Yukon, and GMC Yukon XL vehicles,
equipped with a 5.3L or 6.2L engine, may have a condition which affects fuel injector function.

Under
certain circumstances one or more of the vehicle’s fuel injectors may deliver an improper amount of fuel to the engine. If this occurs, the Malfunction Indicator Lamp (Check Engine Light) will illuminate, the
engine may idle or run rough, and the vehicle may stall. A diagnostic trouble code related to the fuelinjector may be set. This special coverage only applies to vehicles in these states: California,
Connecticut, Delaware, Maine, Maryland, Massachusetts, New Jersey, New York, Oregon,
Pennsylvania, Rhode Island, Vermont, and Washington

Trojan20 · Apr 26, 2023

Christoph said:
This is what I found...not looking good for me or most other people...

Condition:

Some 2016 and 2017 model year Cadillac Escalade, Cadillac Escalade ESV, Chevrolet Silverado,
Chevrolet Suburban, Chevrolet Tahoe, GMC Sierra, GMC Yukon, and GMC Yukon XL vehicles,
equipped with a 5.3L or 6.2L engine, may have a condition which affects fuel injector function.

Under
certain circumstances one or more of the vehicle’s fuel injectors may deliver an improper amount of fuel to the engine. If this occurs, the Malfunction Indicator Lamp (Check Engine Light) will illuminate, the
engine may idle or run rough, and the vehicle may stall. A diagnostic trouble code related to the fuelinjector may be set. This special coverage only applies to vehicles in these states: California,
Connecticut, Delaware, Maine, Maryland, Massachusetts, New Jersey, New York, Oregon,
Pennsylvania, Rhode Island, Vermont, and Washington

Trojan20 · Apr 26, 2023

Not Arizona? I recently moved from California. I’m trying to register and engine light on. Code for cold start rough idle. #1 injector bad with only 39,000 miles on 2017 Tahoe.

'15 Yukon 5.3 Fuel Injector HELP

Christoph

Member

Gmfm

TYF Newbie

Christoph

Member

Trojan20

TYF Newbie

Trojan20

TYF Newbie

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