Severity
Critical
CriticalActive
NHTSA recall · Reported April 7, 2004
MACK 2002: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES
ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RELIEF VALVES COULD FAIL TO OPEN AND RELIEVE TANK PRESSURE.
Compiled from official public sources by the editorial team.
Verify with NHTSA →
Mack recalled ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RE… - a critical-severity action.
MACK 2002: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES was recalled by Mack in April 7, 2004. Reason: ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RELIEF VALVES COULD F…. Remedy: DEALERS WILL RETROFIT THE LNG TANKS WITH A NEW PRIMARY RELIEF VALVE PIPE AWAY TUBE AND A …. Verify recall #04V159000 with the NHTSA before acting.
The recall
Mack issued this critical-severity NHTSA recall-ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RELIEF VALVES COULD F….
- Critical
- severity level
- April 7, 2004
- reported
Sourced from official NHTSA enforcement records. Verify recall #04V159000 with the agency before acting. Full product description, hazard, remedy, and related recalls are below.
Recall Insight
This NHTSA action (record #04V159000) was formally reported on April 7, 2004. It is classified under Critical severity, with a current status of Active. Mack is listed as the recalling firm. The number of affected units is not disclosed in the agency filing, which is common for drug and food recalls where lot-level tracking supersedes unit counts.
The documented reason for this recall is: ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RELIEF VALVES COULD FAIL TO OPEN AND RELIEVE TANK PRESSURE. The specific hazard cited in the filing is: THIS COULD CAUSE ICE BUILDUP ON THE DISCHARGE SIDE OF THE PRIMARY AND SECONDARY PRESSURE SYSTEM ALLOWING THE RELIEF SYSTEM TO FREEZE AND BECOME BLOCKED RESULTING IN OVER PRESSURIZATION OF THE LNG T…. Distribution data in the federal record shows the product reached: United States. Distribution scope directly affects the consumer exposure window and determines whether a recall remains regional or escalates into a nationwide advisory. The remedy documented by the agency is: DEALERS WILL RETROFIT THE LNG TANKS WITH A NEW PRIMARY RELIEF VALVE PIPE AWAY TUBE AND A NEW VENTILATED SHROUD. THE RECALL BEGAN APRIL 6, 2004. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALE… - consumers holding this product should act on that instruction rather than relying on general guidance.
Within the same product category the archive holds 6 closely related recalls - clustering in a narrow category often points to a systemic quality-control or supplier issue rather than a one-off defect. Always verify the recall number against the official agency record before acting.
Vehicles recalls over time
Where this recall sits in its category - 7,642 vehicles recalls on record
Of 101,704 recalls in the database, 24,878 are high severity, 72,426 moderate, and 4,400 low. This recall is classified high severity.
Counts reflect market size and reporting activity, not inherent danger, we do not rank products by risk from raw recall volume.
Affected scope
Unknown
Related Recalls
6
0 from same agency
Product description
ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RELIEF VALVES COULD FAIL TO OPEN AND RELIEVE TANK PRESSURE.
Reason for recall
ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RELIEF VALVES COULD FAIL TO OPEN AND RELIEVE TANK PRESSURE.
Hazard
THIS COULD CAUSE ICE BUILDUP ON THE DISCHARGE SIDE OF THE PRIMARY AND SECONDARY PRESSURE SYSTEM ALLOWING THE RELIEF SYSTEM TO FREEZE AND BECOME BLOCKED RESULTING IN OVER PRESSURIZATION OF THE LNG TANKS CREATING THE RISK OF CATASTROPHIC TANK RUPTURE WHICH COULD CAUSE SERIOUS INJURY OR DEATH.
Remedy, what to do
DEALERS WILL RETROFIT THE LNG TANKS WITH A NEW PRIMARY RELIEF VALVE PIPE AWAY TUBE AND A NEW VENTILATED SHROUD. THE RECALL BEGAN APRIL 6, 2004. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT MACK AT 1-610-709-3337.
Recall Profile
| Attribute | Value |
|---|---|
| Agency | National Highway Traffic Safety Administration |
| Severity class | Critical |
| Status | Active |
| Recall number | 04V159000 |
| Date reported | April 7, 2004 |
| Date initiated | April 7, 2004 |
| Recalling firm | Mack |
| Affected scope | Not disclosed |
| Distribution | United States |
| Official source | NHTSA notice → |
Profile values are sourced directly from the official NHTSA enforcement record. Source: National Highway Traffic Safety Administration.
What to do with this recall
DEALERS WILL RETROFIT THE LNG TANKS WITH A NEW PRIMARY RELIEF VALVE PIPE AWAY TUBE AND A NEW VENTILATED SHROUD. THE RECALL BEGAN…
- Check the recall number (04V159000) and product description against the item you own. Search the archive
- Confirm the current status and remedy on the official NHTSA notice before acting. NHTSA notice
- This is a Class I (high-risk) recall, stop using the product immediately and follow the disposal or return instructions. What to do next
This page summarizes the official NHTSA record for research and awareness; it is not legal, medical, or safety advice. Verify with the issuing agency before acting.
Frequently Asked Questions
What product was recalled? ▼
ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RELIEF VALVES COULD FAIL TO OPEN AND RELIEVE TANK PRESSURE.. Recalled by Mack.
Why was this product recalled? ▼
ON CERTAIN CHASSIS BUILT WITH LNG ENGINES, THE NEXGEN LNG TANK'S PRIMARY AND SECONDARY RELIEF VALVES COULD FAIL TO OPEN AND RELIEVE TANK PRESSURE.
What should consumers do? ▼
DEALERS WILL RETROFIT THE LNG TANKS WITH A NEW PRIMARY RELIEF VALVE PIPE AWAY TUBE AND A NEW VENTILATED SHROUD. THE RECALL BEGAN APRIL 6, 2004. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT MACK AT 1-610-709-3337.
Which agency issued this recall? ▼
This recall was issued by the NHTSA on April 7, 2004. Severity: Critical. Recall number: 04V159000.
Where was the recalled product distributed? ▼
Distribution: United States.
How do I check if my product is affected by a recall? ▼
Check the product description and recall number (04V159000) against your product. Visit the official NHTSA website for the most current information. You can also use our Recall Checker tool to search by product name or brand.
How do I report an injury from a recalled product? ▼
Report injuries to the issuing agency: CPSC at SaferProducts.gov, NHTSA at nhtsa.gov/report-a-safety-problem, or FDA via MedWatch. Document the product (photos, model/serial numbers, purchase receipts) and seek medical attention. Injury reports help agencies track hazard patterns and may strengthen enforcement actions.
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Other recalls in the same product category, useful for spotting patterns across the same defect class or manufacturer.
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Every figure on PlainRecalls is rendered directly from official FDA, CPSC and NHTSA recall records, no number is typed in by an editor. This recall: NHTSA, reported April 7, 2004. Severity classes follow each agency's own taxonomy (FDA Class I/II/III; CPSC and NHTSA by hazard type), and related-recall context is computed across the full archive. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of July 2026.