2015 GMC Sierra: Recalls, Problems & MPG
Here are the deets on the 2015 GMC Sierra: 6 recalls, 53 owner complaints and up to 20 mpg combined.
Recalls
6 vehicle recalls from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.
Engine & cooling Vehicle recall #14V007000 · 2014 · 325,213 vehicles
What's wrong: 3l engine or 5.3l engine.
Why it matters: The overheated exhaust components May melt nearby plastic parts and May result in an engine fire.
The fix: General motors will notify owners, and dealers will reprogram the engine control module, free of charge. The recall began on January 16, 2014.
Transmission & drivetrain Vehicle recall #14V374000 · 2014 · 392,459 vehicles
What's wrong: In the affected vehicles, an electrical signal short May cause the transfer case to shift to neutral without the driver's input.
Why it matters: If the transfer case switches to neutral while the vehicle is parked and the parking brake is not in use, the vehicle May roll away increasing the risk of injury to bystanders. If the transfer case switches to neutral while the vehicle is being driven, the vehicle would lose drive power, increasing…
The fix: Gm will notify owners, and dealers will re-program the software in the transfer case control module, free of charge. The recall began in early August 2014.
Seats Vehicle recall #14V446000 · 2014 · 124,007 vehicles
What's wrong: Due to an incomplete weld on the seat hook bracket assembly, the front seats in the affected vehicles May not stay secured in place during a high load condition such as a crash.
Why it matters: A seat that does not stay secured increases the risk of occupant injury in a vehicle crash.
The fix: Gm will notify owners, and dealers will inspect the seat hook bracket assembly weld and replace the lower seat track, as necessary, free of charge. The recall began on August 15, 2014.
Steering Vehicle recall #14V719000 · 2014 · 679 vehicles
What's wrong: Due to a problem with the eps module, the affected vehicles May experience a sudden loss of power steering assist during vehicle operation.
Why it matters: An unexpected loss of power steering increases the risk of a crash.
The fix: Gm will notify owners, and dealers will replace the power steering assist motor kit, free of charge. The recall began on November 17, 2014.
Transmission & drivetrain Vehicle recall #14V819000 · 2014 · 152 vehicles
What's wrong: Due to an improper heat-treatment, the rear axle shaft May fracture while the vehicle is being driven.
Why it matters: If the rear axle shaft fractures, the rear wheel May separate from the axle shaft, increasing the risk of a crash.
The fix: Gm will notify owners, and dealers will inspect the rear axles, and replace any that were improperly heat-treated, free of charge. The recall began on December 17,2014.
Electrical Vehicle recall #15V640000 · 2015 · 3,073 vehicles
What's wrong: In the affected vehicles, the ignition lock actuator May bind, making turning the key difficult or causing the ignition to get stuck in the "start" position.
Why it matters: If stuck in the "start" position, the ignition May suddenly snap back into the "accessory" position, causing a loss of engine, steering, and braking power, increasing the risk of a vehicle crash. If the vehicle is in a crash, the air bags May not deploy, increasing the risk of occupant injury.
The fix: Gm will notify owners, and dealers will replace the ignition lock housing, free of charge. The recall began on November 20, 2015.
Most-reported problems
Owner complaints filed with NHTSA, by component. One complaint can list several components. 1 mention a fire, 1 injuries and 0 deaths were reported.
What owners describe
- Exterior lights (30): the most common themes are warning light on (12).
- Steering (6): the most common themes are steering problems (4), noise or vibration (3).
- Transmission & drivetrain (6): the most common themes are hard / delayed shifting (4).
- Airbags (4): no single recurring theme in the descriptions.
The 2015 GMC Sierra has 53 owner complaints, ranking #19 of 28 Sierra model years for complaints (well below the 140 average). Complaints peaked in 2016 (22 filed that year). The typical problem showed up when the car was about 0 years old, at a median of 2,750 miles. Neighboring years: 2014 (101 complaints, 11 recalls), 2016 (6 complaints, 2 recalls).
Engines & fuel economy (EPA)
| Engine | Transmission | Drive | City | Hwy | Comb. | Fuel |
|---|---|---|---|---|---|---|
| 4.3 L 6-cyl | Automatic 6-spd | Rear-Wheel Drive | 18 | 24 | 20 | Gasoline or E85 |
| 5.3 L 8-cyl | Automatic 6-spd | Rear-Wheel Drive | 16 | 23 | 19 | Gasoline or E85 |
| 5.3 L 8-cyl | Automatic 6-spd | Rear-Wheel Drive | 16 | 23 | 19 | Regular |
| 4.3 L 6-cyl | Automatic 6-spd | 4-Wheel Drive | 17 | 22 | 19 | Gasoline or E85 |
| 5.3 L 8-cyl | Automatic 6-spd | 4-Wheel Drive | 16 | 22 | 18 | Gasoline or E85 |
| 5.3 L 8-cyl | Automatic 6-spd | 4-Wheel Drive | 16 | 22 | 18 | Regular |
| 4.3 L 6-cyl | Automatic 6-spd | Rear-Wheel Drive | 16 | 21 | 18 | Gasoline or E85 |
| 4.3 L 6-cyl | Automatic 6-spd | 4-Wheel Drive | 16 | 20 | 18 | Gasoline or E85 |
| 5.3 L 8-cyl | Automatic 6-spd | Rear-Wheel Drive | 15 | 20 | 17 | Gasoline or E85 |
| 5.3 L 8-cyl | Automatic 6-spd | Rear-Wheel Drive | 15 | 20 | 17 | Regular |
| 5.3 L 8-cyl | Automatic 6-spd | 4-Wheel Drive | 15 | 19 | 17 | Gasoline or E85 |
| 5.3 L 8-cyl | Automatic 6-spd | 4-Wheel Drive | 15 | 19 | 17 | Regular |
Want the full repair deets? Get the factory manual.
Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2015 GMC Sierra.
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Most $25–$78, one-timePro-shop repair procedures, wiring diagrams and TSBs for your exact car.
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FAQ
Does the 2015 GMC Sierra have any recalls?
Yes. NHTSA lists 6 vehicle recalls for the 2015 GMC Sierra. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.
What are the most common 2015 GMC Sierra problems?
Owners have filed 53 complaints with NHTSA. The most-reported areas are exterior lights (30), steering (6), transmission & drivetrain (6).
What gas mileage does the 2015 GMC Sierra get?
EPA ratings run up to 20 mpg combined (4.3 L, Automatic 6-spd), across 14 engine and transmission combos.
Where can I get a 2015 GMC Sierra repair manual?
eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.