2012 GMC Sierra 1500: engine and transmission complaints
NO ELEVATED SIGNAL
28%
12 of 43 relevant owner complaints are about the engine, transmission or fuel system
No elevated drivetrain complaint concentration in the available NHTSA records for the 2012 GMC Sierra 1500. Engine, transmission and fuel system account for 28% of relevant complaints.
Better than 73% of the 1,230 model years we track (2010–2023).
Excludes 6 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 24%).
Looking at a specific Sierra 1500?Check its VIN: the full report, quotes about its own engine, and whether its recalls are still open. First report free.
Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.
What owners reported
SUSPENSION,POWER TRAIN,UNKNOWN OR OTHER05/22/2026
They should be responsible for repairs or replacement of the cheap made frames that rust away so fast so u ain’t gotta worry about your truck fallling apart going down the rd and the lower control arms made of cast that rust from inside out and you don’t know until breaks while driving along with camber adjustments whe…
POWER TRAIN01/15/2026
The contact owns a 2012 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the transmission unexpectedly downshifted, especially between second and third gears. The check engine warning light was intermittently illuminated. In addition, the contact stated that the engine felt as though the …
FUEL/PROPULSION SYSTEM01/03/2020
I WAS DRIVING MY TRUCK UP A 6% PERCENT GRADE WHEN THE CHANGE FUEL FILTER SOON WARNING POPPED UP, ABOUT A MINUTE LATER THE VEHICLE STARTED TO LOSE POWER, I KEPT DRIVING TO TRY AND GET OVER THE HILL SO I COULD MAKE IT TO A REPAIR SHOP TO HAVE IT CHECKED OUT. I WAS ONLY ABLE TO MAKE IT ABOUT 2 MILES AFTER THE WARNING SHOW…
Three of 12 drivetrain complaints. The full report shows more, with quotes about the engine in the car you are looking at first.
Recall campaigns on this model year (3)
EQUIPMENT
General Motors LLC (GM) is recalling certain 2009-2014 Chevrolet Silverado HD and GMC Sierra HD, 2009 GMC Topkick 5000, 6000, 7000 and 8000 Series and Isuzu F Series, and…
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE
General Motors, LLC (GM) is recalling certain 2014 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 2500, Sierra 350…
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE
General Motors, LLC (GM) is recalling certain 2012 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Silverado 2500/3500, Suburban, Taho…
This does not say whether a particular car has an open, unrepaired recall. That depends on the VIN.
Before you buy a 2012 GMC Sierra 1500
No elevated drivetrain pattern for this model year. That describes the model, not the car in front of you.
Get an independent pre-purchase inspection from a mechanic you choose.
3 recall campaigns on this model year. Whether a specific car still has one open depends on the VIN; the report checks that.
Ask for service records. A engine already replaced under warranty is a different car from one that was not.
Have the VIN?Paste it and get the full report for that car. First report free, then a 30-day pass covers a whole car search.
Experimental 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.
