Recall 14V554 affects 78 2015 Mack Granite (Gu) trucks for fuel-filter shell separation and engine stalling. Repair is free at Cummins Service Centers.
Mack is recalling 78 2015 Granite (Gu) trucks because the Fleetguard fuel filter shell can separate from the filter nut plate and stall the engine without warning. An unexpected stall increases crash risk, and the Mack dealer repair will be free once available.
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What's wrong?
The 2015 Mack Granite (Gu) uses a diesel fuel filter to clean fuel before it reaches the Cummins ISL engine. The filter traps debris and water so the fuel system sends clean diesel to the engine at the right flow rate. On these trucks, the recall involves Fleetguard UFF-XT fuel filters, part number FF63009.
The defect is in the connection between the filter shell and the fuel filter nut plate. The shell separates from the nut plate, which interrupts fuel delivery instead of letting the filter stay sealed in the fuel system. When fuel flow stops, the engine stalls.
There is no warning sign before failure. A driver does not get a reliable symptom first, such as a warning light or rough running, before the engine shuts down.
Who's affected?
| 2015 Mack Granite (Gu) | fuel system |
|---|---|
| Units affected | 78 |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific truck is included.
What's the safety risk?
An unexpected engine stall increases the risk of a crash because the truck loses power while moving. If the engine quits on the road, hold steering control, move out of traffic when safe, and call a Mack dealer before continuing service. Repair will be free at any franchised Mack dealer once available.
What should I do?
- Check your VIN to confirm your 2015 Mack Granite (Gu) is included in this recall.
- Contact a franchised Mack dealer or Cummins Service Center to ask for the free fuel-filter replacement.
- Reference recall number 14V554 and Mack recall SC0384 when you call.
- Schedule the Fleetguard fuel-filter replacement that fixes the filter-shell separation linked to engine stall without warning.
- Drive cautiously until the repair is complete. Leave extra following distance and pull over safely if the engine loses power.
What happens at the repair
The known repair is straightforward: at the dealer, a Mack technician replaces the Fleetguard UFF-XT fuel filter with a non-defective fuel filter. The part involved is the engine fuel filter, not the whole fuel system. Once the recall repair is available for your VIN, parts and labor are covered at no charge. If your truck stalls or shows fuel filter trouble before the appointment, tell the service desk that recall 14V554 involves a Cummins ISL engine fuel filter shell that separates from the nut plate.
Timeline
| September 11, 2014 | NHTSA published the recall |
|---|---|
| September 29, 2014 | Owner notification mailed |
Frequently asked questions
What is recall 14V554?
Recall 14V554 covers 78 2015 Mack Granite (Gu) trucks with Cummins ISL engines. The Fleetguard UFF-XT fuel filter, part number FF63009, has a shell that can separate from the fuel filter nut plate, causing the engine to stall without warning and increasing crash risk.
What should I do if my 2015 Mack Granite (Gu) is on this recall?
Check your VIN to confirm your specific truck is included in recall 14V554. If it is, contact Mack customer service at 1-800-528-6586 or a Cummins Service Center to arrange the fuel-filter replacement. Reference Mack recall number SC0384 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to correct the defect at no cost to the owner. Cummins Service Centers will replace the affected fuel filter with a non-defective one free of charge.
What is the safety risk?
The safety risk is an engine stall without warning. If the fuel filter shell separates from the nut plate, the engine can stall unexpectedly, which increases crash risk. Confirm your VIN, then arrange the free fuel-filter replacement if your truck is included.
What warning signs should I watch for?
There is no warning sign before failure in the recall description. The defect involves the fuel filter shell separating from the nut plate, which can stall the engine without warning. Treat VIN confirmation as the deciding step, not dashboard symptoms.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/14V554000 |
|---|---|
| Mack customer service | 1-800-528-6586 |
| NHTSA recall # | 14V554 |
| NHTSA recall # (full) | 14V554000 |
Source documents
-
Download Quarterly Report (PDF) - Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 1, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →