This page covers 11 recalls and 53 owner complaints for the 2015 GMC Sierra.
Exterior lighting dominates the complaint picture for the 2015 GMC Sierra, accounting for the large majority of the 53 filed reports. Owners most commonly describe headlights, taillights, or other exterior lamps failing, flickering, or going out entirely, a pattern that spans multiple complaints across this model year. Steering draws the next cluster of reports, with owners describing the electric power steering cutting out intermittently while driving, requiring noticeably more effort to turn the wheel; a power steering warning message often appears on the dash when this happens. A handful of powertrain complaints round out the picture, including owners reporting sudden loss of power while driving and, in at least one case, a loud mechanical failure in the engine compartment followed by a tow. The lighting complaints are by far the most concentrated pattern here.
53
Total Complaints
3
Crash-Related
1
Fire-Related
1
With Injuries
By System
The 2015 GMC Sierra has 11 recalls, the most serious involving an ignition that can snap back to the accessory position and cut engine, steering, and braking power, and exhaust components that can overheat at idle and melt nearby plastic parts or cause a fire.
Several recalls are specific to HD (2500/3500) trims. Power steering hose clamps on those trucks may not hold, letting the hose pull away from the pump or steering gear and leak fluid. A separate steering recall covers a sudden loss of power steering assist that can occur at any time, with only a dashboard warning and chime as notice. HD diesel models also have two fuel leak concerns: loose fittings at the diesel transfer pump and a loose vent line clamp can each allow fuel to escape near potential ignition sources.
On the safety side, side curtain airbag inflators on certain trucks may fail in a crash and launch a metal end cap into the cabin. Rear axle shafts on certain trucks can fracture while driving, causing a rear wheel to separate from the vehicle.
At a glance
What can fail
The side curtain airbag inflators may be defective and could fail to deploy properly. If they fail, the inflator's end cap could be launched into the vehicle and hit a person.
What the fix does
Dealers will replace one or both side curtain airbags to ensure proper deployment in a crash.
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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 →
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 rear axle shaft may fracture during driving due to improper heat treatment during manufacturing.
What the fix does
Dealers will inspect rear axles and replace any with improper heat treatment at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Rear axle shafts may lack proper heat treatment, causing them to fracture near the wheel hub and separate from the axle, risking wheel loss.
What the fix does
Dealers will check the manufacturing code on rear axle shafts and replace any identified as defective.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
On certain diesel-engine vehicles, the fuel tank vent line clamp may be loose from the factory. This could let the vent line slip off the fuel tank, causing fuel to leak.
What the fix does
Dealers will inspect the clamp and tighten it as needed.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Exhaust components can overheat during idle in cold weather, causing nearby plastic parts to overheat and melt, which may produce smoke or fire.
What the fix does
Dealers will reprogram the engine control module to prevent exhaust overheating.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The power steering assist motor may suddenly fail at any time while driving, causing loss of power steering. The vehicle switches to manual steering mode, requiring more driver effort, especially at low speeds.
What the fix does
The power steering assist motor will be replaced.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Power steering hose clamps may not be properly attached, allowing the hose to disconnect from the pump or steering gear and leak fluid, causing loss of power steering assist and brake assist.
What the fix does
Dealers will inspect the clamps to ensure they are properly attached to the hose.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
Power steering hose clamps may not be properly fastened, allowing the hose to disconnect from the pump or steering gear and leak fluid, reducing steering and brake assist.
What the fix does
Dealers will inspect the clamps to confirm they are properly attached.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
On certain HD diesel vehicles with dual fuel tanks, the fuel pipe nuts at the diesel transfer pump may be loose. When the pump transfers fuel from the rear tank to the front tank, diesel fuel could leak from these loose connections, creating a fire risk.
What the fix does
Dealers will tighten the fuel pipe tube nuts to the correct torque specification.
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.
