2014-2019 GMC Sierra 1500 Lethal Garage Flex Fuel Kit
Our custom E85 Flex Fuel kit for the 15-19 GMC Sierra with a 5.3L or 6.2L engine, is just what you need for more power, savings on fuel costs, and a better smelling ride... (Okay that last one is subjective). PLEASE! Verify the harness plug location on your vehicle before purchasing, see the install video below for location. Returns will incur a restock fee.
Note: This kit can also work for the Yukon & Yukon XL if you have the frame rail connection point as seen in the install video below.
This kit is assembled by Lethal Garage and it includes the following:
- 1 - GM OEM Flex Fuel Sensor
- 1 - Stainless Steel Braided PTFE OEM Style Fuel Line (Made in the USA)
- 1 - Gen5DIY custom plug & play power harness & ECU tap. (Made in the USA)
- Two Year Warranty on all GM parts as provided by GM & lifetime warranty on the Gen5DIY harness that covers any defects in craftsmanship.
- 4 - Zip ties for install
Our product is designed to tuck away and be hidden under the vehicle away from the engine allowing 100% concealment if your hood is popped. Our kit installs under the back side of the cab in front of the fuel tank where the factory sensor would have installed if your vehicle came with it.
Vehicle Fitment:
- 2014 GMC Sierra 1500 models with the 5.3L or 6.2L engine
- 2015-2018 GMC Sierra's with the 5.3L or 6.2L engine
- 2019 GMC Sierra Limited Edition model with the 5.3L or 6.2L engine
- 2019 GMC Sierra HD models with the 5.3L or 6.2L engine
- This will not fit the New Body Style 2019+ models (Classic Body style only)
Notes:
- This kits harness uses OEM connectors in tandem with OEM products. Fit and finish look 100% stock under your vehicle. Your truck will pick up 10-15rwhp on e78 or better depending on the tune.
- Note: While the GM flex fuel sensor can be installed and works perfectly fine to run pump gas with your vehicle without a tune, to run E85 your truck must have a tune to run E85 fuel. DO NOT INSTALL & RUN E85 WITHOUT A PROPER TUNE. Make sure your tuner has verified your sensor is hooked up and reading the ethanol content before adding e85 to your vehicle.
Install Guide:
Note: Verify your truck or SUV has the Flex Fuel harness plug located on the frame rail of the vehicle just behind the cab of the truck. See the install video for precise location.
WARNING California Residents - cancer (and/or reproductive harm) - www.P65Warnings.ca.gov.
Pairs well with
Everything truck. One store.
Built for enthusiasts, by enthusiasts.
International orders? We ship worldwide.
Shop with confidence — it's all official.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
-
Shipping Information
Use this text to answer questions in as much detail as possible for your customers.
-
Customer Support
Use this text to answer questions in as much detail as possible for your customers.
-
FAQ’s
Use this text to answer questions in as much detail as possible for your customers.
-
Contact Us
Use this text to answer questions in as much detail as possible for your customers.
#1 Truck Destination
The most complete collection of officially licensed truck apparel, accessories, upgrades, and gear — all in one place.
Whether you're upgrading your rig, repping your brand, or finding the perfect gift for the truck lover in your life — you're in the right place. TruckStoreOnline.com carries officially licensed gear across every category, from apparel and accessories to performance upgrades and collectibles.
FAQs
Please read our FAQs page to find out more.
Q: Can someone outside of the United States place an order?
A: Yes, we are happy to provide worldwide service for our customers. Your shipping charges will be calculated during the checkout process. Customs and duty fees are the responsibility of the buyer.
Q: How much will shipping cost?
A: Unfortunately, the cost of shipping is a real expense. Our goal is to minimize your shipping costs. Shipping is calculated at checkout based on the items in your cart and will be displayed prior to you placing an order. Please note that oversized items may be subject to additional charges, which will be noted on the product page.
Q: Why does my order say "Fulfilled" if it hasn't been shipped?
A: Fulfillment of an order at CorvetteStoreOnline.com means your order has been received and reviewed by a member of our team and sent off to the appropriate channel for fulfillment. We will always send a Shipment Confirmation & Tracking email when your order has been shipped.
Q: How do I track my order?
A: Once your order ships, you will receive a tracking notification via email. You are not required to purchase, download or use the Route app to track your order - this is an optional feature of the Route Package Protection service.
Q: When will I receive my order?
A: Orders are processed within one business day of placement. Standard domestic shipping generally ships within 7-10 business days for stock items. Please note that custom items do generally take longer for production and is noted on the product pages. Additionally, due to the ongoing logistics and supply chain challenges, some items do occasionally go on backorder due to unexpected delays relative to receiving and processing. Please note that if your order contains multiple items, they may deliver to you in separate packages as we ship from multiple locations around the country depending upon where the inventory is located.