Description
Fits 2020–2023 Chevrolet Trailblazer, Blazer, Buick Envision, Cadillac XT4, XT5, GMC Acadia
Restore your vehicle’s emissions control system to factory condition with this premium Vapor Canister Purge Valve Pump, engineered as a direct OEM replacement for GM part numbers 55511871, 55513205, and 55516874.
This component forms part of the EVAP (Evaporative Emissions Control) system, which regulates fuel vapor flow from the charcoal canister to the intake manifold. A properly functioning purge pump ensures clean emissions, stable idling, and improved fuel efficiency while preventing the “Check Engine” light caused by EVAP faults.
Built to OEM specifications, this replacement pump offers precise fitment, durable construction, and long-term reliability for 2020–2023 GM SUVs and crossovers.
Key Features & Benefits
- OEM-Quality Fitment – Direct replacement for GM 55511871, 55513205, and 55516874.
- Durable Construction – Manufactured from high-strength materials resistant to heat, fuel vapor, and corrosion.
- Optimized Performance – Maintains correct vacuum pressure and ensures reliable purge control operation.
- Prevents Emission Faults – Helps eliminate fault codes such as P0443, P0446, and P0455.
- Plug-and-Play Installation – Installs easily using the original connectors and brackets; no modifications required.
- Emission-Compliant Design – Meets or exceeds OEM standards for environmental regulations.
Compatible Vehicles
This purge valve pump fits a wide range of GM vehicles manufactured between 2020 and 2023, including models under the Chevrolet, Buick, GMC, and Cadillac brands.
It directly replaces the original GM part and connects using the same electrical and mounting configuration.
Chevrolet
- Trailblazer (2020–2023)
- Engines: 1.2 L Turbo (L3T), 1.3 L Turbo (LYD)
- Notes: Mounted near rear underbody EVAP assembly; identical fit and function to OEM.
- Blazer (2020–2023)
- Engines: 2.0 L Turbo (LTG), 2.5 L (LCV), 3.6 L V6 (LGX)
- Notes: Compatible with all engine variants; restores proper vapor purge operation.
Buick
- Envision (2021–2023)
- Engine: 2.0 L Turbo (LSY)
- Notes: Direct-fit replacement for second-generation Envision; matches factory purge pump specifications.
GMC
- Acadia (2020–2023)
- Engines: 2.0 L Turbo (LTG), 3.6 L V6 (LGX)
- Notes: OEM-quality replacement; fits all trims and configurations.
Cadillac
- XT4 (2020–2023)
- Engine: 2.0 L Turbo (LSY)
- Notes: Shares identical EVAP architecture with the Buick Envision; direct electrical and mounting compatibility.
- XT5 (2020–2023)
- Engines: 2.0 L Turbo (LSY), 3.6 L V6 (LGX)
- Notes: Exact fit for all XT5 trims; installs without modification.
Engine Platforms Covered
Compatible with the following GM engine families:
- 1.2 L Turbo (L3T)
- 1.3 L Turbo (LYD)
- 2.0 L Turbo (LTG / LSY)
- 2.5 L (LCV)
- 3.6 L V6 (LGX)
These engines share the same EVAP emissions configuration, allowing cross-platform compatibility across multiple GM vehicles.
Fitment Confirmation
To ensure correct fitment:
- Match the part number on your original pump (55511871, 55513205, or 55516874).
- Alternatively, confirm fitment using your VIN — MVA Spares can verify the exact match for your vehicle.
Quick Summary
- Part Type: EVAP Vapor Canister Purge Valve Pump
- Replaces OEM: 55511871 / 55513205 / 55516874
- Fits Models: Trailblazer, Blazer, Envision, XT4, XT5, Acadia (2020–2023)
- Engine Types: 1.2 L – 3.6 L (Turbo & V6)
- Condition: New OEM-style Replacement
- Warranty: 12 Months / 1 Year Limited
Why Choose MVA Spares
- Trusted supplier of genuine and OEM-quality replacement parts.
- VIN-verified fitment support to ensure you get the correct part the first time.
- Fast local dispatch and expert technical assistance across South Africa.
Helpful Tip
A failing purge valve pump can cause rough idling, fuel odours, difficulty starting after refuelling, or an illuminated “Check Engine” light. Replacing it promptly restores correct emissions control, fuel efficiency, and overall performance.
