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At a glance
This page covers 22 recalls and 101 owner complaints for the 2014 GMC Sierra.
Exterior lighting dominates the complaint picture for the 2014 GMC Sierra, accounting for the large majority of what owners report. The most common pattern involves headlights, with owners describing premature bulb failures, condensation inside housings, and reduced output. Powertrain complaints are a distant second, where owners report transmission shudder, rough shifting, and occasional torque converter concerns. Steering draws a smaller but notable cluster of reports describing the wheel becoming suddenly stiff or difficult to turn during low-speed maneuvers such as turns into driveways or parking lots, with no warning light appearing beforehand. A few owners report the stiffness was severe enough to affect their ability to control the vehicle's direction.
101
Total Complaints
5
Crash-Related
2
Fire-Related
6
With Injuries
By System
The 2014 GMC Sierra has 22 recalls, the most serious being multiple fire risks: exhaust components on 4.3L and 5.3L engines can overheat at idle and melt nearby plastic parts, transmission cooler lines can leak fluid onto hot surfaces, and wiring can overheat and ignite.
Two ignition defects can trap the key in "Start" and cause it to snap back to "Accessory," cutting engine, steering, and braking power. A tie rod can loosen and separate from the steering rack, and electric power steering can drop out and return suddenly during low-speed turns. On certain four-wheel-drive models, the transfer case can silently drop into neutral without warning.
Several airbag and restraint recalls group together: the passenger airbag inflator may not fully deploy, the airbag control module can disable airbags and seatbelt pretensioners for an entire drive cycle, and the driver's seatbelt anchor cable can fatigue and detach in a crash. Front seat head restraints on certain vehicles may not provide adequate rear-impact protection. On the brake side, reduced vacuum pump output can make the pedal hard to press, and a software error on certain four-wheel-drive models can cause the vehicle to pull sharply to one side. Trucks with a power sliding rear window have a separate wiring concern where the rear defroster circuit can overheat and smoke. Two lower-severity recalls involve a gear position indicator that may not display first gear correctly on vehicles with an Allison A1000 transmission.
At a glance
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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 can fail
On trucks with a power sliding rear window, the rear defroster wiring can overheat and melt. Some trucks may not have received proper repairs from earlier recall work, and some may lack updated parts installed during production.
What the fix does
Dealers will replace the rear window contact cover and update HVAC software if needed. Damaged rear windows or sliding glass assemblies will be replaced.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The flexible steel cable connecting the driver's seat belt to the seat may be an incorrect replacement part from a prior repair. This cable can flex and break over time, potentially causing the seat belt to detach during a crash.
What the fix does
GM will mail you instructions to visit a dealer, who will replace the driver's outboard seat belt pretensioner assembly.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A software error in the electronic-brake control module may cause the driveline-protection system to activate when a wheel-speed sensor fails, applying the brakes and pulling the vehicle to one side.
What the fix does
A dealer will update the electronic-brake control module software to correct the error.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The rear defroster circuit on certain trucks with a power sliding rear window can overheat, potentially causing melting, smoke, or fire.
What the fix does
Dealers will replace the buss bar and contact covers for the rear sliding window. Damaged rear window or sliding glass assemblies will also be replaced.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The vacuum pump may lose output, reducing power brake assist. This causes a harder brake pedal and increased effort needed to stop the vehicle.
What the fix does
A dealer will reprogram the electronic brake control module to restore proper brake assist function.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A software problem in the airbag control module may prevent front airbags and seatbelt pretensioners from deploying during a crash when they should.
What the fix does
Dealers will update the control module software. If the module has recorded prior deployments, dealers will replace it with a new module.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Electric power steering assist may briefly cut out and suddenly return during low-speed turns due to an electrical or software issue. The sudden return of steering effort could make the vehicle harder to control.
What the fix does
Dealers will update the software in the electric power steering module.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The steel cable connecting the driver's seat belt to the vehicle body can wear out and break over time, reducing seat belt protection in a crash.
What the fix does
Dealers will widen the side shield opening, add a bracket to the tensioner, and replace the tensioner assembly if needed.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The ignition lock actuator may bind, making the key difficult to turn or causing the ignition to stick in the Start position.
What the fix does
Dealers will replace the ignition lock housing at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The ignition lock actuator may stick or resist turning the key, especially when it's hot. If the key gets stuck in start position and the vehicle is jolted or cools down, the key can slip to accessory position, shutting off the engine and disabling power steering and brakes.
What the fix does
The dealer will replace the ignition lock housing.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
An electrical short in the Automatic Transfer Case may cause it to shift into neutral without driver input, while the mode knob still shows the previously selected drive mode. The driver receives no warning of this shift.
What the fix does
Dealers will reprogram the Transfer Case Control Module software to prevent the electrical short from causing unintended neutral shifts.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The radio may stop working, which silences warning chimes that normally alert you when the key is in the ignition and the driver's door opens, or when a front seat belt is unbuckled. This increases the risk of unbelted occupants in a crash and vehicle theft.
What the fix does
Dealers will update the radio's software to restore proper chime functionality.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A fault in the Sensing and Diagnostic Module may activate the airbag warning lamp and disable airbags and seatbelt pretensioners, increasing injury risk in a crash.
What the fix does
Not applicable.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The tie rod may not be properly tightened where it connects to the steering gear. This could cause it to loosen and separate, affecting steering control.
What the fix does
Dealers will check that tie rods are tightened correctly and replace the steering gear if needed.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The transmission cooler lines may not be fully seated in their fittings, which could cause transmission fluid to leak onto hot engine parts and create a fire risk.
What the fix does
Dealers will inspect the cooler line connections and repair them as needed.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The engine control module may have incorrect programming that could cause engine performance issues in these 2014-2015 trucks and SUVs with 4.3L or 5.3L engines.
What the fix does
Dealers will reprogram the engine control module at no cost to restore correct engine operation.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
On some 1500 series vehicles with 4.3L or 5.3L engines, exhaust components can overheat while idling in cold weather, causing nearby plastic parts to overheat, melt, and potentially create smoke or fire.
What the fix does
The dealer will reprogram your engine control module to prevent the exhaust from overheating.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Wrong transmission software installed at service centers causes the dashboard to not show when gear position 1 is selected on 2014 Chevrolet Silverados and GMC Sierras with Allison A1000 transmissions.
What the fix does
Dealers will upload the correct transmission software to your vehicle at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The dashboard may not show which gear is selected when the transmission shift lever is in the "1" position. A driver unaware of this could accelerate in first gear only, potentially causing a crash.
What the fix does
The dealer will update the transmission control module software to fix the display.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The front seat seatbacks may move or recline unintentionally. In a rear-end crash, the head restraint might not protect you properly, increasing injury risk.
What the fix does
The dealer will inspect and adjust the seatback recliner mechanism to fix the movement.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The weld on the passenger airbag inflator can crack when the airbag deploys, causing some gas to leak behind the dashboard instead of filling the airbag.
What the fix does
Dealers will replace the passenger airbag module at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Welds on the passenger airbag inflator may crack when the airbag deploys, causing gas to escape behind the dashboard instead of filling the airbag fully.
What the fix does
Dealers will replace the entire passenger front airbag assembly.
Summarized — see the official notice for exact wording, dates, and contacts.
