NHTSA service bulletin

NHTSA Service Bulletin 10238343: 2019, 2020 Buick Enclave

Official manufacturer communication context for 2019, 2020 Buick Enclave, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10238343 summary graphic for 2019, 2020 Buick Enclave
10238343NHTSA document ID
Emissions communicationcommunication type
5affected product rows
100/100quality score

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

Special Coverage. Certain 2019 model year Buick Enclave and Chevrolet Traverse vehicles equipped with a 3.6L engine (RPO LFY), and certain 2020 model year Buick Encore and Chevrolet Sonic / Trax vehicles equipped with a 1.4L engine (RPO LUV), may have a condition that could cause the evaporative emissions purge valve to not fully close. If this condition occurs, the engine could run rough, hesitate, or stall at idle speeds. Additionally, the Malfunction Indicator Light (Check Engine Light) would illuminate, and a diagnostic trouble code would be set. Dealers are to replace the evaporative emissions purge valve as necessary. The repairs will be made at no charge to the customer.

What this bulletin may mean before buying

Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.

Affected products listed in this communication

MakeModelModel yearsBuyer note
BuickEnclave2019Ask for service records and run the exact VIN before purchase.
BuickEncore2020Ask for service records and run the exact VIN before purchase.
ChevroletSonic2020Ask for service records and run the exact VIN before purchase.
ChevroletTrax2020Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 10238343?

Special Coverage. Certain 2019 model year Buick Enclave and Chevrolet Traverse vehicles equipped with a 3.6L engine (RPO LFY), and certain 2020 model year Buick Encore and Chevrolet Sonic / Trax vehicles equipped with a 1.4L engine (RPO LUV), may have a condition that could cause the evaporative emissions purge valve to not fully close. If this condition occurs, the engine could run rough, hesitate, or stall at.

Is a service bulletin the same as a recall?

No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.

How should a used-car buyer use this bulletin?

Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.

Check the exact VIN before you buy

Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.

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