Blue Bird All American, Blue Bird Vision, model years 2011 to 2012. Filed by Blue Bird Body Company and reported to NHTSA on 17 August 2011. 860 vehicles potentially affected.
What the notice says Blue bird is recalling certain model year 2011 and 2012 all american school buses manufactured from october 13, 2010, through march 8, 2011, and vision school buses manufactured from october 2, 2010, through february 2, 2011, equipped with a cummins diesel engine. the v-band clamp assembly, part numbers q187684, …
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
The maker's own number for this recall: R11TH. That is the number on the owner letter and on the dealer paperwork. 11V423 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 11V423 cover?
- Blue Bird All American, Blue Bird Vision, model years 2011-2012.
- What is wrong with them?
- BLUE BIRD IS RECALLING CERTAIN MODEL YEAR 2011 AND 2012 ALL AMERICAN SCHOOL BUSES MANUFACTURED FROM OCTOBER 13, 2010, THROUGH MARCH 8, 2011, AND VISION SCHOOL BUSES MANUFACTURED FROM OCTOBER 2, 2010, THROUGH FEBRUARY 2, 2011, EQUIPPED WITH A CUMMINS DIESEL ENGINE.
- What can happen if it is not put right?
- IF THE INLET OR OUTLET SECTIONS DISCONNECT, HOT EXHAUST GASES CAN VENT PRIOR TO EXITING THE TAILPIPE, CREATING THE RISK OF COMBUSTION AND A FIRE. IF BOTH CLAMPS FAIL, THERE IS A RISK IN SOME APPLICATIONS THAT THE DOC/DPF HOUSING MAY DETACH COMPLETELY, CREATING A ROAD HAZARD.
- Is there a fix yet?
- Yes, and it is free. BLUE BIRD IS WORKING WITH CUMMINS TO IDENTIFY AND NOTIFY OWNERS OF THE RECALL CAMPAIGN. REPAIRS WILL BE PERFORMED BY AUTHORIZED CUMMINS DEALERS FREE OF CHARGE. THE SAFETY RECALL BEGAN ON OCTOBER 10, 2011. OWNERS MAY CONTACT CUMMINS AT 1-812-377-5000 OR BLUE BIRD AT 1-478-822-2242.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. The maker calls this recall R11TH, which is the number on the owner letter and the dealer paperwork.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “IF THE INLET OR OUTLET SECTIONS DISCONNECT, HOT EXHAUST GASES CAN VENT PRIOR TO EXITING THE TAILPIPE, CREATING THE RISK OF COMBUSTION AND A FIRE. IF BOTH CLAMPS FAIL, THERE IS A RISK IN SOME APPLICATIONS THAT THE DOC/DPF HOUSING MAY DETACH…”
affected
in the notice
caught
| Campaign | 11V423 |
|---|---|
| Filed by | BLUE BIRD BODY COMPANY |
| System at fault | Engine And Engine Cooling |
| Reported to NHTSA | 17 August 2011 |
| Model years | 2011-2012 |
| Vehicles named | BLUE BIRD ALL AMERICAN, BLUE BIRD VISION |
What the notice says today
The consequence
IF THE INLET OR OUTLET SECTIONS DISCONNECT, HOT EXHAUST GASES CAN VENT PRIOR TO EXITING THE TAILPIPE, CREATING THE RISK OF COMBUSTION AND A FIRE. IF BOTH CLAMPS FAIL, THERE IS A RISK IN SOME APPLICATIONS THAT THE DOC/DPF HOUSING MAY DETACH COMPLETELY, CREATING A ROAD HAZARD.
The remedy
BLUE BIRD IS WORKING WITH CUMMINS TO IDENTIFY AND NOTIFY OWNERS OF THE RECALL CAMPAIGN. REPAIRS WILL BE PERFORMED BY AUTHORIZED CUMMINS DEALERS FREE OF CHARGE. THE SAFETY RECALL BEGAN ON OCTOBER 10, 2011. OWNERS MAY CONTACT CUMMINS AT 1-812-377-5000 OR BLUE BIRD AT 1-478-822-2242.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 588 notices in the record whose component field names engine and engine cooling. Across that group the median wait before owners were written to was 47 days.
The models named here, across their whole recall history
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 11V423 on 17 September 2026, they were:
- Defect summary
25625f5c - Consequence
1491100f - Remedy
c45386c0
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 11V423 · how the whole register is watched
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Owners of these cars
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