Service bulletin S19ZY

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

NHTSA's summary

Overview: The Blue Bird or Cummins Dealer is to use the Cummins INSITE™ electronic service diagnostic program to set the “Regeneration Inhibit Vehicle Speed Threshold” parameter value to 0 mph. Affected Units: All 2017-2020 model year Blue Bird All American School Buses with Cummins ISL-13 or L9 engines manufactured from January 20, 2016 through September 18, 2018 and all model year 2017 through 2020 Blue Bird All American Non-School Buses with Cummins ISL-13 or L9 engines manufactured from January 29, 2016 through September 7, 2018. On the subject buses, Blue Bird or Cummins Dealer is to use the Cummins INSITE™ electronic service diagnostic program to set the “Regeneration Inhibit Vehicle Speed Threshold” parameter value to 0 mph. Repair Parts: None Time Allowance: Time allowed to use the Cummins INSITE™ set the “Regeneration Inhibit Vehicle Speed Threshold” parameter value to 0 mph in each bus is 0.5 hours. Completion Notification: If you have an authorized Cummins Dealer perform this service bulletin, please notify your Blue Bird Dealer, when the repair is completed. Send the body number, repair date, and odometer reading to your Blue Bird Dealer. If you request reimbursement for labor, also send a copy of the work order/invoice to your Blue Bird Dealer.

The document

• NHTSA's copy of the document (PDF)
• If that address does not open, try this one

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Listing a model year does not mean every vehicle of it is concerned: the document says which.

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