This page covers 5 recalls and NHTSA crash-test ratings for the 2018 GMC Sierra 2500.
The 2016 to 2018 GMC Sierra 2500 received a four-star overall rating from NHTSA's New Car Assessment Program for US-market vehicles. In frontal crash testing, the truck earned four stars. Side crash protection was rated at five stars, while side pole crash testing also achieved five stars. Rollover resistance received a three-star rating. NHTSA applies these ratings across model years until a significant redesign occurs, so this assessment covers the entire 2016 to 2018 range.
4/5 Overall
NHTSA 5-Star Safety Rating
The 2018 GMC Sierra 2500 has 5 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.
Trucks equipped with the optional dual fuel tank have a separate concern: the rear tank can collapse and cut off fuel transfer to the front tank, causing the engine to stall without warning. On the occupant safety side, the roof-rail curtain airbag inflator can rupture or shed its end cap during deployment, sending metal fragments into the cabin. Front seatbelt retractors on some trucks were built with the wrong internal torsion bar, which can cause the belt to perform below the required standard in a crash and raise the risk of injury. Some of these recalls only affect trucks with specific options, including the dual-tank setup, the Duramax 6.6-liter diesel, or the optional block heater cord.
At a glance
What can fail
The roof-rail air bag inflator's end cap may come loose or the inflator itself may crack, affecting the left or right side of the vehicle.
What the fix does
Dealers will replace both left and right roof-rail air bag modules at no cost.
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Driver Assistance
Ratings from NHTSA's New Car Assessment Program (NCAP). Based on 6 tested variants; worst-case ratings shown.
Summarized — see the official notice for exact wording, dates, and contacts.
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
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.
