NHTSA service bulletin

NHTSA Service Bulletin 10227664: 2016-2023 Cadillac Blazer

Official manufacturer communication context for 2016-2023 Cadillac Blazer, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10227664 summary graphic for 2016-2023 Cadillac Blazer
10227664NHTSA document ID
Manufacturer communicationcommunication type
8affected product rows
8source rows grouped

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

This Preliminary Information communication provides information to the technician with additional information on the functionality of Lane Keep Assist.Starting with2016 model year Lane Keep Assist Regular Production Option Code (UHX) replaced Lane Departure Warning Regular Production Option Code (UFL). Lane Keep Assist is designed to assist the driver in keeping the vehicle from drifting out of a driving lane that has clearly identified markings. The electric power steering provides a gentle steering correction if a lane marking has been crossed and the driver has not actively responded.

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
CadillacEscalade Esv2016-2023Ask for service records and run the exact VIN before purchase.
ChevroletBlazer2019-2023Ask for service records and run the exact VIN before purchase.
ChevroletSilverado 15002016-2023Ask for service records and run the exact VIN before purchase.
ChevroletSuburban2016-2023Ask for service records and run the exact VIN before purchase.
ChevroletTahoe2016-2023Ask for service records and run the exact VIN before purchase.
GMCSierra 15002016-2023Ask for service records and run the exact VIN before purchase.
GMCYukon Denali2016-2019Ask for service records and run the exact VIN before purchase.
GMCYukon Xl2020-2023Ask 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 10227664?

This Preliminary Information communication provides information to the technician with additional information on the functionality of Lane Keep Assist.Starting with2016 model year Lane Keep Assist Regular Production Option Code (UHX) replaced Lane Departure Warning Regular Production Option Code (UFL). Lane Keep Assist is designed to assist the driver in keeping the vehicle from drifting out of a driving lane that.

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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