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2012 GMC Sierra 3500 problems: engine and transmission complaints and recalls
39% of relevant owner complaints on the 2012 GMC Sierra 3500 are about the engine, transmission or fuel system. That is elevated. Worth an independent inspection before you commit to one.
Better than 54% of the 1,790 model years we track (2010–2023).
Excludes 5 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 34%).
Does the 2012 GMC Sierra 3500 have engine problems?
More than most. The pattern is elevated rather than severe. 13 of 33 relevant complaints filed with NHTSA about the 2012 GMC Sierra 3500 concern the engine, transmission or fuel system (39%), and the largest group is filed under engine (8). For comparison, the 2011 scores 39% and the 2013 scores 43%. On a test drive, check for stalling, loss of power, rough idle, oil consumption or a check-engine light. This describes the model year, not any one car: a well-maintained or already-repaired example can be fine, and a clean model year can still have a bad car in it.
Complaints by component
The years either side
Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.
How the 2012 compares with other GMC Sierra 3500 years
Of the 11 GMC Sierra 3500 years with enough complaints to score, the 2012 is the 5th-best on engine and transmission share (39%). The worst is the 2023 (63%), the best the 2010 (15%). By volume, the 2012 drew 38 complaints (13 drivetrain), against 63 for the 2011 and 53 for the 2013.
GMC Sierra 3500 years to avoid and best years →
2010 Sierra 3500 problems · 2011 Sierra 3500 problems · 2012 · 2013 Sierra 3500 problems · 2014 Sierra 3500 problems · 2015 Sierra 3500 problems · 2016 Sierra 3500 problems · 2017 Sierra 3500 problems · 2020 Sierra 3500 problems · 2022 Sierra 3500 problems · 2023 Sierra 3500 problems
The rest of the picture on the 2012 GMC Sierra 3500
- What the repair costs. Typical engine repair ranges, to price into your offer.
- Cleaner alternatives. Similar cars and nearby years with a better record.
- Up to 15 owner reports, with the ones about your car's own engine first.
- What to ask the seller and what to check on the test drive, for this car.
- Two cars side by side, if you are deciding between them.
What one owner reported
One of 13 drivetrain complaints. The full report shows up to 15, with quotes about the engine in the car you are looking at first.
2012 GMC Sierra 3500 fuel system recalls
Yes. NHTSA lists 1 recall campaign on the 2012 GMC Sierra 3500 involving the engine, transmission or fuel system, out of 4 in total. A recall is the manufacturer admitting a defect and paying to fix it; whether a specific car still has one open depends on its VIN, which the full report checks. The owner complaints above are a separate record and often point at problems that never became a recall.
General Motors LLC (GM) is recalling certain 2011-2015 Chevrolet Silverado 3500 and GMC Sierra 3500 trucks equipped with dual fuel tanks. The low fuel level sensor for the front tank may stick causing the rear tank to overfill the front tank.
Risk: If the front tank overfills, the excess pressure may cause the front tank to expand and contact the driveshaft, possibly resulting in a hole in the tank. The hole will leak fuel, which in the presence of an ignition…
Fix: GM has notified owners, and dealers will replace the rear tank fuel pump or update the fuel-level sensor software, as well as inspect the front tank, replacing it as necessary, free of charge. The recall began December…
3 other recalls on this model year (airbags, lighting, brakes and the rest)
Source: NHTSA recall campaigns filed against this year, make and model. Checked October 3, 2026.
Checking one particular 2012 GMC Sierra 3500? This page is about the model year. Accidents, title brands and odometer records belong to the individual car, and that is what a vehicle history report covers.
Get a history report from EpicVIN Before you pay: EpicVIN’s $1 offer is a 3-day trial (up to 5 reports) that renews at $49.99 a month unless you cancel. Other plans are listed under “View all our packages” at checkout. We may earn a commission if you buy through this link. It does not change what this page reports.Questions people ask about the 2012 GMC Sierra 3500
Does the 2012 GMC Sierra 3500 have engine problems?
More than most; the pattern is elevated rather than severe. 13 of 33 relevant complaints filed with NHTSA about the 2012 GMC Sierra 3500 concern the engine, transmission or fuel system (39%). Before buying one, have an independent mechanic check the engine and ask the seller whether it has been repaired or replaced.
What is the most common problem with the 2012 GMC Sierra 3500?
Going by NHTSA owner complaints, the most common problem filed against the 2012 GMC Sierra 3500 is electrical system: 9 of 38 complaints (24%) name it, followed by engine (8) and structure (6). A complaint can name more than one component, so these overlap. Engine, transmission and fuel-system complaints together make up 39% of the relevant total.
Is the 2012 GMC Sierra 3500 reliable?
On the engine and transmission, owner complaints point to a weak spot: 39% of relevant complaints filed with NHTSA concern the drivetrain (elevated signal). That is better than 54% of the 1,790 model years we track. Among the 11 GMC Sierra 3500 years we score, it ranks 5th-best. Complaint data describes the model year, not one car, and it says nothing about trim, paint or electronics outside the drivetrain; an independent inspection still decides it.
Are there engine or transmission recalls on the 2012 GMC Sierra 3500?
Yes. NHTSA lists 1 recall campaign on the 2012 GMC Sierra 3500 involving the engine, transmission or fuel system, out of 4 in total: 17V664000 (fuel system, gasoline: storage: auxillary tank). Whether a specific car still has one open depends on its VIN.
Which GMC Sierra 3500 years are better?
Among the GMC Sierra 3500 years we track, the 2010 (15%), the 2022 (32%) and the 2015 (36%) have a lower engine and transmission complaint share than the 2012 (39%). Manufacturers fix things mid-generation, so the year before or after can be a different car. Every year side by side: https://thelanecheck.com/cars/gmc-sierra-3500
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Check a VINExperimental model-level information. This is not a vehicle inspection, vehicle-history report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition of any individual vehicle.