Dorman Vapor Canister EVAP Charcoal Canister for Select GM Vehicles — Direct-Fit 911-149 (2004–2016)

The Dorman 911-149 vapor canister is a direct-fit evaporative emissions charcoal canister engineered to restore EVAP system function on specified Buick, Cadillac, Chevrolet and GMC models.

If your vehicle is showing an EVAP-related trouble code, running a persistent check engine light, or failing an emissions test, replacing a worn or damaged canister is often the correct repair. Dorman designed this replacement to replicate the original canister’s form and function for select late-model GM platforms, giving you a correctly sized, application-specific unit that installs like the factory part.

What vehicles does this canister fit?

This canister is matched to specific model years and trims, covering a range of Buick, Cadillac, Chevrolet and GMC vehicles. Always verify compatibility by entering your make, model and trim into the garage tool before ordering to ensure an exact match.

• Buick Rendezvous: 2004–2005
• Cadillac CTS and SRX: 2004–2005 (CTS) and 2004–2005 (SRX)
• Cadillac Escalade: 2004–2016 (select years listed)
• Chevrolet Tahoe and GMC Yukon: 2004–2016 across many trims

How does this replacement help my vehicle’s emissions and drivability?

When the EVAP canister is saturated or cracked, fuel vapors can’t be captured or purged correctly, which may trigger fault codes and inspection failures. Installing a properly engineered replacement restores the canister’s charcoal bed and connections, allowing the system to vent and purge as intended.

• Replaces worn or leaking charcoal canister media
• Prevents fuel vapor leaks that cause EVAP fault codes
• Supports proper purge and venting cycles for emissions testing

Is this a direct replacement and how easy is installation?

Yes — the Dorman unit is built to mirror the original part’s mounting points, hose ports and overall shape, so it installs in the same location without major modification. Basic hand tools are typically all that’s needed for removal and installation, but consult a repair manual or technician if you’re unsure.

• Engineered to match original canister dimensions and ports
• Installs with standard hand tools and factory mounting locations
• Follow vehicle-specific steps to avoid damaging hoses or fittings

What quality and support can I expect from Dorman?

Dorman backs this canister with engineering and quality oversight based in the United States, focusing on reliable fit and long-term durability. Their aftermarket approach reverse-engineers the original design to provide a practical, cost-effective alternative to OEM replacement parts.

• Reverse-engineered from original equipment design
• Produced and inspected under Dorman’s quality standards
• Customer support available to confirm fitment and answer questions

Who is this for: The Dorman 911-149 vapor canister is intended for owners and technicians working on the listed Buick, Cadillac, Chevrolet and GMC models who need a reliable, direct-fit EVAP replacement. It’s a practical choice for DIY mechanics repairing an EVAP fault, fleet managers maintaining multiple vehicles, and repair shops seeking a cost-effective alternative to dealer parts. Confirm your exact year, make and trim in the garage tool to ensure proper fitment before purchase.