NHTSA (USA)Critical
At a glance
What can fail
The front passenger air bag inflator may explode due to propellant breakdown after prolonged exposure to high humidity, high heat, and temperature changes.
This page covers 6 recalls and 20 owner complaints for the 2011 GMC Sierra 3500.
The dominant complaint pattern on the 2011 GMC Sierra 3500 centers on the airbag system, specifically the dashboard cracking around the passenger-side airbag module. Owners describe the dash developing significant cracks that could interfere with proper airbag deployment, plastic fragments potentially traveling toward occupants if the bag fires. That's the highest-volume concern by a clear margin. A smaller cluster of reports covers transmission control module failures, where owners describe the truck dropping into limp mode with no warning, losing the ability to shift normally in forward or reverse. One report mentions this happening while towing on a highway. A couple of isolated reports touch on electrical and structural issues, but those don't form a clear pattern. The dashboard cracking complaint appears across multiple reports and dealers are said to acknowledge it as a widespread issue on this generation of GM trucks.
20
Total Complaints
1
Fire-Related
By System
The 2011 GMC Sierra 3500 has 6 recalls, the most serious involving the front passenger airbag inflator, which can explode and send sharp metal fragments into the cabin, causing serious injury or death.
The airbag inflator issue is covered by multiple recalls and applies to vehicles originally sold or registered in high-humidity states and territories. Prior repair attempts did not fully resolve the issue for all affected vehicles, which is why separate campaigns remain open.
On the fuel system side, trucks equipped with dual fuel tanks have a recall for a low fuel level sensor in the front tank that can stick, allowing the rear tank to overfill the front one. The resulting pressure can cause the front tank to expand and contact the driveshaft, potentially punching a hole in the tank and creating a fuel leak. Trucks equipped with an auxiliary battery have an electrical concern where a fusible link can melt and contact nearby wiring and components, raising the risk of a fire in the engine bay. There is also a recall for certain fire extinguishers that may fail to discharge properly if needed.
At a glance
What can fail
The front passenger air bag inflator may explode due to propellant breakdown after prolonged exposure to high humidity, high heat, and temperature changes.
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Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
What the fix does
Dealers will replace the front passenger air bag inflator with a different one at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The front passenger air bag inflator may fail to deploy or deploy incorrectly in a crash.
What the fix does
Dealers will replace the front passenger air bag inflator with an alternate one at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The front passenger air bag inflator contains a propellant that can degrade and rupture after prolonged exposure to high heat, humidity, and temperature swings.
What the fix does
Dealers will replace the front passenger air bag inflator with a different one at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The fire extinguisher may clog and fail to discharge, or require excessive force to use. In some models, the nozzle may detach forcefully, potentially causing injury and making the extinguisher inoperable.
What the fix does
GM will provide a free replacement fire extinguisher from Kidde. Contact your vehicle manufacturer's customer service to arrange the replacement.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The front tank's low fuel level sensor can stick, causing the rear tank to overfill the front tank beyond its capacity.
What the fix does
The dealer will replace the rear tank fuel pump or update the fuel-level sensor software, and inspect and replace the front tank if needed.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The trailer harness can allow too much electrical current to flow through the auxiliary battery circuit, causing the fusible link to melt.
What the fix does
Dealers will replace the jumper harness with one that includes a 40 amp inline fuse and provide updated Owner Manual information.
Summarized — see the official notice for exact wording, dates, and contacts.