***Back in-stock!***
NOTE: This is the full install kit which includes an OBD-2 Scan Tool. If you already own a Scan Tool, we also offer the Adapter Only option at a lower cost but keep in mind, you will need a Scan Tool to complete the installation if you go with the Adapter Only Version: https://www.therealdealnh.com/shop/p/gm-pcv-adapter-adapter-only-corrects-p04fb-check-engine-ct4-ct5-xt4-xt5-buick.
Say goodbye to PCV-related headaches with the new GM-GFY V2.2 adapter kit by TNE. Designed to address the notorious design flaw in GM LSY series engines (see vehicle list below), this kit restores your vehicle's reliability* and brings back features like remote start which are deactivated when the check engine light is triggered. We believe anyone should be able to fix their own vehicle, so we engineered this kit for the easiest possible installation. With our clear, fully illustrated color manual, you’ll be guided through the entire process from start to finish. If you ever get stuck, don’t worry, our friendly technical support team is available at 603-416-1152 to help you get the job done.
*Performance Notice: The factory PCV system in these vehicles is notoriously under-engineered. The GM-GFY represents the most effective and affordable improvement to mitigate this flawed design. While the only guaranteed solution would be a ground-up redesign of the entire PCV system; a costly and complex endeavor, the GM-GFY has proven to resolve these inherent flaws for the vast majority of our customers, the majority of the time.
Due to variables beyond our control, including ambient temperature, humidity, and specific driving habits (such as frequent short commutes versus long highway trips), we cannot provide an absolute guarantee for every scenario. While an occasional "errant" check engine light remains possible, the GM-GFY significantly reduces these occurrences compared to the stock configuration in all cases, and will eliminate them entirely in many other cases.
We know you’ve already been let down by your vehicle manufacturer, so we want to be upfront and honest about what we can and cannot solve without you having to spend hundreds or even thousands of dollars. With that in mind, we offer a 30-day money-back guarantee in the event this does not meet your expectations.
Case pack pricing on large orders is available, with or without the OBD 2 Scan Tool. Reach out to TNE directly at: contact@TNEenterprises.com or call (603) 416 - 1152.
Compatible with:
2019 – 2025 Cadillac XT4 350T
2020 – 2023 GMC Acadia
2020- 2026 Cadillac XT5 350T
2021 – 2025 Cadillac XT6 350T
2020 – present Cadillac CT4 350T
2020 – present Cadillac CT5 350T
2020 – present Chevrolet Blazer
2022 – present Buick Envision Plus
Kit Includes:
TNE GM-GFY V2.2 adapter
TNE ST-1 OBD2 Scan Tool with color LCD screen.
Upgraded Stainless Steel hardware.
5mm Allen wrench for installation.
Step by step, fully illustrated installation guide.
©2026 TNE ENTERPRISES LLC ALL RIGHTS RESERVED All product names, logos, brands, and trademarks—including GM and General Motors—are the property of their respective owners. Use of these names, trademarks, and brands does not imply endorsement, affiliation, or sponsorship. These terms are used in this documentation for identification and compatibility purposes only. TNE Enterprises LLC is an independent aftermarket manufacturer and is not associated with or authorized by General Motors.
***Back in-stock!***
NOTE: This is the full install kit which includes an OBD-2 Scan Tool. If you already own a Scan Tool, we also offer the Adapter Only option at a lower cost but keep in mind, you will need a Scan Tool to complete the installation if you go with the Adapter Only Version: https://www.therealdealnh.com/shop/p/gm-pcv-adapter-adapter-only-corrects-p04fb-check-engine-ct4-ct5-xt4-xt5-buick.
Say goodbye to PCV-related headaches with the new GM-GFY V2.2 adapter kit by TNE. Designed to address the notorious design flaw in GM LSY series engines (see vehicle list below), this kit restores your vehicle's reliability* and brings back features like remote start which are deactivated when the check engine light is triggered. We believe anyone should be able to fix their own vehicle, so we engineered this kit for the easiest possible installation. With our clear, fully illustrated color manual, you’ll be guided through the entire process from start to finish. If you ever get stuck, don’t worry, our friendly technical support team is available at 603-416-1152 to help you get the job done.
*Performance Notice: The factory PCV system in these vehicles is notoriously under-engineered. The GM-GFY represents the most effective and affordable improvement to mitigate this flawed design. While the only guaranteed solution would be a ground-up redesign of the entire PCV system; a costly and complex endeavor, the GM-GFY has proven to resolve these inherent flaws for the vast majority of our customers, the majority of the time.
Due to variables beyond our control, including ambient temperature, humidity, and specific driving habits (such as frequent short commutes versus long highway trips), we cannot provide an absolute guarantee for every scenario. While an occasional "errant" check engine light remains possible, the GM-GFY significantly reduces these occurrences compared to the stock configuration in all cases, and will eliminate them entirely in many other cases.
We know you’ve already been let down by your vehicle manufacturer, so we want to be upfront and honest about what we can and cannot solve without you having to spend hundreds or even thousands of dollars. With that in mind, we offer a 30-day money-back guarantee in the event this does not meet your expectations.
Case pack pricing on large orders is available, with or without the OBD 2 Scan Tool. Reach out to TNE directly at: contact@TNEenterprises.com or call (603) 416 - 1152.
Compatible with:
2019 – 2025 Cadillac XT4 350T
2020 – 2023 GMC Acadia
2020- 2026 Cadillac XT5 350T
2021 – 2025 Cadillac XT6 350T
2020 – present Cadillac CT4 350T
2020 – present Cadillac CT5 350T
2020 – present Chevrolet Blazer
2022 – present Buick Envision Plus
Kit Includes:
TNE GM-GFY V2.2 adapter
TNE ST-1 OBD2 Scan Tool with color LCD screen.
Upgraded Stainless Steel hardware.
5mm Allen wrench for installation.
Step by step, fully illustrated installation guide.
©2026 TNE ENTERPRISES LLC ALL RIGHTS RESERVED All product names, logos, brands, and trademarks—including GM and General Motors—are the property of their respective owners. Use of these names, trademarks, and brands does not imply endorsement, affiliation, or sponsorship. These terms are used in this documentation for identification and compatibility purposes only. TNE Enterprises LLC is an independent aftermarket manufacturer and is not associated with or authorized by General Motors.
![GM-GFY PCV [ADAPTER ONLY] Address "P04FB" Codes in Cadillac, GMC, Buick, Chevrolet Blazer](https://images.squarespace-cdn.com/content/v1/68a9c82af18f8b002504e647/d97eeae8-c77f-4653-b38d-13a1f6cda1c5/GM-GFY+Adapter+Only.jpg)
