Under Seat Vent Deflectors for Chevy Silverado and GMC Sierra - Direct

In this review of the OXILAM under seat vent deflectors, the bottom line is simple: they are a focused fix for rear-seat airflow in compatible Chevrolet Silverado and GMC Sierra models from 2014 through 2019. The main reason to buy is their ability to redirect cool air upward toward passengers instead of the floor, using a plug-and-play design that requires no tools. For owners who want a quick, low-cost improvement to rear passenger comfort, this product delivers a precise, durable solution that installs in minutes.

Key Features

• Vehicle fit: Designed specifically for 2014-2019 Chevrolet Silverado and GMC Sierra rear vents, which helps ensure compatibility with those trucks.
• Airflow direction: The outlet is angled 45 degrees upward so cool air is moved toward rear passengers rather than toward the floorboards.
• Plug-and-play installation: The connection port matches the original air conditioner exhaust, allowing direct installation without additional tools.
• Durable material: Molded from PC plastic that is hard and resistant to deformation, intended to remain stable for years.
• Two-piece set: Includes two lengths to match driver and passenger side rear airways, one larger and one smaller for correct coverage.

Who It's For

This accessory is best for owners of 2014-2019 Chevrolet Silverado and GMC Sierra trucks who have rear air vents and want to improve passenger comfort without changing the HVAC system. It suits drivers who prefer a simple, reversible modification that requires no trimming or tools and who value directing airflow to where people sit.

It is not for trucks that lack backseat vents or for owners who need adjustable multi-directional louvers; some customers reported fit and length differences, so those seeking a universal solution for many different GM interiors should check their vents before ordering.

Pros & Cons

Pros

• Effective at redirecting air to the rear seat, improving passenger comfort in warm conditions.
• Very simple, plug-and-play installation that aligns with the original exhaust connection on compatible trucks.
• Made of sturdy PC plastic with internal fins for long-term directional stability.
• Includes two sizes so both driver and passenger rear outlets can be fitted correctly.

Cons

• Fitment can vary by vehicle; several users reported alignment or length issues with their existing vents.
• No on-the-fly adjustment beyond the fixed 45 degree angle, so direction is not continuously tunable.

Specifications

Brand	OXILAM
Application years	2014, 2015, 2016, 2017, 2018, 2019
Compatible models	Chevrolet Silverado, GMC Sierra (rear vents)
Material	PC plastic
Included pieces	Two deflectors: larger 6.6 x 0.9 in and smaller 5.5 x 0.9 in
Outlet angle	45 degrees upward

Our Verdict

For owners of compatible Silverado and Sierra trucks who want a straightforward way to direct rear cooling to passengers, these deflectors are a practical, cost-effective upgrade. They combine robust PC plastic construction with an easy installation and two-piece sizing to solve a common comfort issue, though buyers should confirm vent presence and check fitment since alignment can vary.

Frequently Asked Questions

Will these fit other GM vehicles?
They are designed for 2014-2019 Silverado and Sierra rear vents; other GM vehicles might fit but buyers should verify the vent shape and connection before purchasing.

Do they require tools to install?
No, the connection port matches the original exhaust and the deflectors install directly without additional tools.

Are the deflectors adjustable?
The outlet is fixed at a 45 degree upward angle and is not adjustable beyond that fixed direction.