NHTSA (USA)Critical
At a glance
What can fail
The roof-rail air bag inflator end cap may separate, or the inflator sidewall may break open.
What the fix does
Dealers will replace both the left and right roof-rail air bag modules at no cost.
The 2016 GMC Sierra 3500 has 6 recalls, the most serious being a brake pedal that can loosen or stop working entirely, leaving the driver unable to slow the vehicle and potentially causing the pedal to catch on the accelerator.
A separate fuel system recall affects trucks with dual gasoline tanks: a sticking fuel-level sensor in the front tank can allow the rear tank to overfill it, building enough pressure to expand the front tank until it contacts the driveshaft and develops a hole, creating a fuel leak. On the safety equipment side, the roof-rail curtain airbag inflator can rupture or shed its end cap, sending metal fragments into the cabin during a deployment. There is also a concern with the front airbags and seatbelt pretensioners, where a wiring issue can prevent both systems from firing in a crash, reducing protection for the driver and front passenger. Prior repair attempts did not fully resolve that pretensioner issue, which is why it appears across more than one filing.
At a glance
What can fail
The roof-rail air bag inflator end cap may separate, or the inflator sidewall may break open.
What the fix does
Dealers will replace both the left and right roof-rail air bag modules at no cost.
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Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The fuel-level sensor in the front tank may stick, preventing it from reading correctly. This allows fuel from the rear tank to overfill the front tank.
What the fix does
Dealers will replace the rear-tank fuel-pump module and inspect the front tank, replacing it if needed.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The brake pedal pivot nut can loosen, making the brake pedal loose or unable to work.
What the fix does
Dealers will apply adhesive to the nut and reinstall it more tightly to secure the brake pedal.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The air bag control software may not have received a complete update from a previous recall. Under certain driving conditions, this software may run a diagnostic test that disables frontal air bags and seat belt pretensioners during a crash.
What the fix does
Dealers will update the air bag control software. If your vehicle previously deployed air bags, the control module will be replaced instead. Repairs are free.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Under certain driving conditions, the air bag control module's software may run a self-test that disables the front air bags and seat belt pretensioners, preventing them from deploying in a crash.
What the fix does
Dealers will update the air bag control module software. If your air bags have previously deployed, the module will be replaced. Repairs are free of charge.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The brake pedal pivot nut may loosen over time, causing the brake pedal to become loose or stop working.
What the fix does
Dealers will apply adhesive to the brake pedal pivot nut and reinstall it with increased torque to secure it properly.
Summarized — see the official notice for exact wording, dates, and contacts.