Would this be a replacement on a 2004 suburban Z71?

Worked on 2004 5.3 suburban. Wired it up closer to the engine bay. The old unit was too far down the line and the wiring went bad to ground. This is just a more modern version with a much easier install. They all produce the voltage necessary by the computer. You will need new fuel line for this install and the pigtail as they are different. Possibly use the old lines near the intake and route it back the manifold input. Or just remove all the old lines and start fresh. The old fuel lines were terrible on my truck and i had to replace the 170000 mile old pump anyway.

hello， I want to know the difference between 13507128 and 13577429 their prices are not the same ，i want to know which one should i buy？

There are two versions of this sensor. One has the ability to measure fluid temperature as well if your aftermarket ECU supports it. Good luck!

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13507128 Flex Fuel Sensor

Product ID: 95051426

Details

Brand
GM GENUINE
Item Weight
50 Grams
Item dimensions L x W x H
4.3 x 3.8 x
Material
Metal
Style
Modern

🔥Measures 0-100% ethanol content

⚙️100% OEM precision fit

🛡️Durable up to 125°C

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€ 114.64

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Details

Brand
GM GENUINE
Item Weight
50 Grams
Item dimensions L x W x H
4.3 x 3.8 x

Description

⚡ Drive smarter with GM’s flex fuel sensor — authenticity you can trust!

SEAMLESS OEM FIT - Flange mount design for effortless installation and perfect compatibility
ROBUST DURABILITY - Metal construction rated for high temps up to 125°C withstands harsh conditions
TRUSTED BY THOUSANDS - 4.8-star rating with 475+ reviews proves reliability and peace of mind
PRECISION ENGINE TUNING - Optimizes air/fuel mix & ignition timing for peak performance
GUARANTEED GENUINE QUALITY - GM-recommended, factory-spec sensor ensures zero compromises

The GM Genuine Parts 13507128 Flex Fuel Sensor is a factory-spec replacement designed to monitor ethanol content from 0-100%, enabling your GM vehicle’s engine control module to optimize fuel efficiency and performance. Built with durable metal and rated for temperatures up to 125°C, this sensor guarantees a perfect OEM fit and long-lasting reliability, backed by a 24-month warranty and stellar customer reviews.

Specifications

ASIN	B073ZQ1G2P
Best Sellers Rank	#16,334 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Fuel Tank Valve Sensors
Brand	GM GENUINE PARTS
Brand Name	GM GENUINE PARTS
Customer Reviews	4.7 out of 5 stars 480 Reviews
Global Trade Identification Number	00808709652618
Included Components	Flex Fuel Sensor
Item Dimensions	4.3 x 3.8 x 1.3 inches
Item Type Name	Flex Fuel Sensor
Item Weight	50 Grams
Item dimensions L x W x H	4.3 x 3.8 x 1.3 inches
Manufacturer	ACDelco
Material	Metal
Material Type	Metal
Measuring Range	0% - 100%
Model	13507128
Mounting Type	Flange Mount
Output Type	Analog
Part Number	13507128
Style	Modern
Style Name	Modern
UPC	808709652618
Unit Count	1.0 Count
Upper Temperature Rating	125 Degrees Celsius
Warranty Description	24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details.

Reviews

J**R

14.11.2025

M**B

4.04.2026

B**X

13.12.2025

S**S

20.04.2026

D**S

23.11.2025

V**.

2.02.2025

J**D

12.04.2026

S**W

13.02.2026

M**D

24.02.2026

D**D

28.09.2025

B**.

2.12.2022

S**N

13.11.2022

N**.

23.07.2024

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€ 114.64

Duties & taxes included

In stock

Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Italy.

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