At a glance
What can fail
The nuts that secure the rear axle U-bolts may not have been tightened properly and can loosen over time, causing the rear axle to shift out of alignment.
The 2016 Isuzu NPR has 5 recalls, the most serious being an accelerator pedal that can stick open, sending the truck to very high speeds and making it extremely difficult to bring to a stop.
Two other recalls involve the rear axle and wheel assemblies. The U-bolt nuts that clamp the rear axle leaf springs in place can loosen, allowing the axle to shift out of alignment. When that happens, the driveshaft can separate entirely, cutting power to the rear wheels and stalling the truck in traffic. Separately, the left rear wheel bearing hub bolts can also be insufficiently tightened, allowing the wheel assembly to walk outward away from the axle housing. That movement reduces braking effectiveness and can affect the driver's ability to steer and control the truck. Both of these issues raise the risk of a crash, particularly under load or at highway speeds where a commercial truck is hardest to bring under control quickly.
The remaining two recalls both concern the onboard fire extinguisher. The extinguisher supplied with certain trucks may not function correctly when needed, leaving the driver without a working suppression tool if a fire breaks out in or around the cab.
At a glance
What can fail
The nuts that secure the rear axle U-bolts may not have been tightened properly and can loosen over time, causing the rear axle to shift out of alignment.
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What the fix does
Dealers will inspect the rear axle U-bolt nuts and tighten or replace them as needed to secure the axle properly.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The plastic-handle fire extinguisher may clog and fail to discharge, require excessive force to activate, or have a nozzle that detaches forcefully, potentially causing injury.
What the fix does
Replace the fire extinguisher with a free replacement unit from Walter Kidde.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The bolts that lock the left rear wheel bearing hub may not have been tightened properly during manufacturing, which could cause them to loosen.
What the fix does
Dealers will inspect the left rear wheel bearing hub bolts and tighten them as needed at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The throttle pedal can become stuck under the steel stopper bolt, causing it to stay in the full throttle position.
What the fix does
Dealers will remove the stopper bolt and install a flanged plate to prevent the throttle pedal from moving sideways.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Certain Kidde model FC10 plastic valve fire extinguishers equipped on these trucks may fail to discharge when the lever is pressed.
What the fix does
Replace the fire extinguisher with a replacement unit at no cost from Kidde Safety or through an Isuzu dealer.
Summarized — see the official notice for exact wording, dates, and contacts.