NHTSA (USA)Critical
At a glance
What can fail
The rear fuel tank may collapse, blocking the fuel pump from moving fuel to the front tank and causing the engine to stall.
What the fix does
This page covers 6 recalls and NHTSA crash-test ratings for the 2017 GMC Sierra 2500.
4/5 Overall
NHTSA 5-Star Safety Rating
The 2017 GMC Sierra 2500 has 6 recalls, the most serious being a fire risk tied to the optional engine-block heater, where an electrical short in the heater cable or its terminals can ignite a fire under the hood.
Trucks equipped with the optional dual fuel tank have a separate concern: the rear tank can collapse internally, cutting off the fuel supply to the front tank and causing the engine to stall without warning. Three recalls cover occupant restraint, and while they are distinct filings, they share the same real-world consequence: the front airbags and seatbelt pretensioners may fail to fire in a crash. Two of those involve a control system issue that leaves the driver and front passenger without proper restraint protection when they need it most. The third is a seatbelt retractor built with the wrong internal torsion bar, which means the belt may not manage load correctly during a collision and could allow more forward movement than intended. Owners of dual-tank or engine-block-heater-equipped trucks should confirm their VIN is not among those affected, as those options are not standard on all trims.
At a glance
What can fail
The rear fuel tank may collapse, blocking the fuel pump from moving fuel to the front tank and causing the engine to stall.
What the fix does
We may earn a commission for purchases made through these links.
Driver Assistance
Ratings from NHTSA's New Car Assessment Program (NCAP). Based on 6 tested variants; worst-case ratings shown.
Dealers will inspect and replace the fuel tank and fuel pump module as needed, and install a vent hose on the rear tank.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
An electrical short circuit can develop in the engine-block heater cable or its connection terminals, potentially causing overheating or electrical failure.
What the fix does
Dealers will replace the engine-block heater and heater cord at no cost. Previously disabled heaters and those in prior recall 19V-328 will also receive replacement cords, rerouted as needed.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The engine block heater cord or its terminals may short circuit and fail, affecting certain diesel-equipped Silverado and Sierra trucks.
What the fix does
Dealers will replace the engine block heater free of charge. On some models, they will also install a rerouted heater cord.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The front seat belt retractors have an incorrect torsion bar that may prevent the seat belts from working properly in a crash.
What the fix does
Dealers will replace both front seat belt retractor assemblies at no cost to you.
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.