PANNUOSCS Vapor Canister Vent Valve for Chevy Silverado GMC Sierra 2008-2019 — 911-099 16mm EVAP Fit, OE Replacement

PANNUOSCS Vapor Canister Vent Valve 911-099 is a direct-fit EVAP purge vent valve designed to replace worn or faulty vent valves on 2008–2019 Chevy Silverado and GMC Sierra trucks.

This replacement vent valve restores proper evaporative emissions control by matching OEM mounting and electrical connections for seamless swap-in installation. Engineered to meet replacement OE references (911-099, 23103351, CPV149, CVS191, PV896), the part is sized and shaped for Silverado 1500/2500HD/3500HD and GMC Sierra 1500/2500HD/3500HD models over the 2008–2019 production years. Before ordering, verify the vacuum connector diameter to ensure the correct valve version: the 911-099 / P0446 uses a 16mm connector while other codes like 911-237 / P0449 are 15mm.

Will this valve fit my Silverado or Sierra?

If your truck is a Chevy Silverado or GMC Sierra from 2008 through 2019, this vent valve is listed as compatible with 1500, 2500HD and 3500HD variants. Confirm fit by comparing the OEM part numbers and the vacuum connector diameter between your existing valve and this listing.

• Compatible models: Silverado and Sierra 1500/2500HD/3500HD (2008–2019)
• Replacement OE numbers included: 911-099, 23103351, CPV149, CVS191, PV896
• Connector size: 911-099 / P0446 = 16mm; double-check before purchase
• Compare images and part numbers to your original valve for best match

How do I confirm the correct connector size?

Measure the vacuum hose or existing valve inlet to verify diameter before ordering. The correct connector ensures a leak-free seal and reliable EVAP system operation without extra adaptors.

• Use calipers or a ruler to measure internal diameter
• 911-099 / P0446 corresponds to a 16mm vacuum connector
• 911-237 / P0449 corresponds to a 15mm vacuum connector
• Contact seller with photos if you’re unsure about match

What are the main benefits of replacing the old vent valve?

Swapping in a new vent valve helps restore correct EVAP purge control and can prevent drivability or emissions-related codes. A functional valve maintains proper vapor routing and prevents unwanted fuel vapors from entering the atmosphere.

• Restores OEM-level fit and function with compatible mounting and connector
• Helps resolve EVAP-related fault codes when valve failure is the cause
• Durable construction for long service life under under-hood conditions
• Comes with 12-month replacement coverage for added confidence

How easy is installation and what should I prepare?

Installation is straightforward for anyone comfortable with basic vehicle maintenance: unplug the electrical connector, remove mounting fasteners, swap the valve, and reattach vacuum and electrical lines. Always work on a cool engine and verify connections before starting the vehicle.

• No special tools beyond common hand tools and possibly pliers
• Disconnect battery negative if you prefer added electrical safety
• Inspect vacuum hose for cracks and replace if worn
• Clear any stored trouble codes after installation if necessary

Who is this for: This PANNUOSCS 911-099 vent valve is intended for owners and mechanics of 2008–2019 Chevy Silverado or GMC Sierra trucks (1500, 2500HD, 3500HD) who need a reliable OE-referenced replacement. It suits do-it-yourselfers seeking a direct-fit part and professional shops needing a stocked, warranted EVAP vent valve that matches common OEM numbers. Confirm your truck’s part number and vacuum connector size before purchase to ensure the correct version.