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Campaign 15V704 Posted October 26, 2015 13,671 units

2006-2008 GMC W-Series Recall 15V704: Fuel Tank Leak

RN
Reviewed by the RecallNotify editorial team
Published May 31, 2026

Recall 15V704 affects 13,671 2006-2008 GMC W3500, W4500, Npr, and Npr Hd trucks for fuel tank corrosion. Repair is free at any franchised GMC dealer.

GMC recall 15V704 covers 13,671 2006-2008 W3500 and W4500 trucks with fuel tanks that can corrode and leak fuel. A fuel leak near an ignition source increases the risk of fire, and the GMC dealer repair will be free once available.

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What's wrong?

The fuel tank on the 2006-2008 GMC W3500, W4500, Npr, and Npr Hd trucks stores gasoline and keeps it sealed away from the frame, road spray, and exhaust area. Fuel leaves the tank through the fuel system only when the engine needs it. The tank has to stay intact so pressure, fuel delivery, and containment stay controlled.

On affected trucks, the fuel tank can corrode. Corrosion eats into the metal tank wall and weakens it from the outside in. Once the wall is thin enough, fuel can leak through the damaged area instead of staying inside the tank. This is the defect covered by recall 15V704.

There is no warning sign before failure. After a leak starts, an owner can notice fuel smell or visible fuel under the truck, but the recall record does not name an earlier sign that appears before the tank begins to fail.

Who's affected?

Spans W3500, W4500, Npr, and Npr Hd trucks across the 2006-2008 model years, all tied to the same fuel system component.

2007 GMC W3500 fuel system
2007 GMC W4500 fuel system
2008 Isuzu Npr fuel system
2006 Chevrolet W4500 fuel system
2006 Chevrolet W3500 fuel system
Units affected13,671

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?

A fuel leak near an ignition source increases the risk of a fire. If you see or smell fuel, stop using the truck and call a GMC dealer before moving it again. Repair will be free at any franchised GMC dealer once available.

What should I do?

  1. Check your VIN to confirm your 2006-2008 GMC W3500, W4500, Npr, or Npr Hd truck is included in this recall.
  2. Contact a franchised GMC dealer before driving if you smell fuel or see a fuel leak.
  3. Schedule the free fuel-tank replacement that fixes the corrosion and fuel-leak risk.
  4. Bring the recall notice if you have it. If not, reference recall number 15V704 when you call.
  5. Keep the truck away from ignition sources until the fuel tank has been inspected and replaced.

What happens at the repair

The repair plan calls for the fuel tank to be replaced at the dealer, free of charge. A GMC technician removes the corroded or leak prone tank covered by the recall and installs the replacement tank, then checks the fuel system for proper fit and leaks before returning the truck. Because this recall does not list the final remedy as available here, treat the dealer repair as free once available and ask the GMC service desk to confirm current parts availability before scheduling.

Timeline

October 26, 2015 NHTSA published the recall
April 8, 2016 Owner notification mailed

Frequently asked questions

What is recall 15V704?

Recall 15V704 covers 13,671 2006-2008 GMC W3500, W4500, Npr, and Npr Hd trucks with fuel tanks that can corrode and leak fuel. A fuel leak near an ignition source increases fire risk. Dealers will replace the fuel tank for free.

What should I do if my 2006-2008 GMC W3500, W4500, Npr, or Npr Hd is on this recall?

Check your VIN to confirm your specific truck is included in recall 15V704. If it is, contact a franchised GMC dealer to schedule the fuel-tank replacement. Reference recall number 15V704 when you call. The dealer repair is free.

Is the recall repair free?

Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and the recall remedy states dealers will replace the fuel tank free of charge. Parts and labor are covered at the franchised dealer.

What is the safety risk?

The safety risk is fire. Recall 15V704 involves fuel tanks that can corrode and leak fuel. If leaking fuel reaches an ignition source, the risk of a fire increases. Until the repair is complete, take fuel odor or visible leaking seriously and call the dealer before driving.

What if I bought this GMC truck used?

The free recall repair still applies. Federal recall law follows the vehicle, not the first owner. If you never received the owner notice mailed after the recall began on April 8, 2016, check your VIN and reference recall 15V704 when you call the dealer.

More information

NHTSA campaign pagenhtsa.gov/vehicle-recalls/15V704000
GMC customer service1-866-441-9638
NHTSA recall #15V704
NHTSA recall # (full)15V704000

Source documents

This article is generated from NHTSA's primary recall filings and reviewed against the source on May 31, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →