repaired · 2026 Q3
Curtain: inflator
Risk. A separated inflator end cap or inflator rupture can allow compressed gas to escape, resulting in the end cap or other components being propelled into the…
2018 GMC Sierra 2500Problems, recalls & complaints
NHTSA has logged 35 owner complaints about the 2018 GMC Sierra 2500, most often about the engine. It is covered by 5 safety recalls, and for recall 24V-756 the manufacturer reports only 54% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through May 9, 2026. Updated daily. Photo: SsmIntrigue, CC BY-SA 4.0.
Complaints by system
Where the 2018 GMC Sierra 2500 has problems
35 complaints grouped by the system owners reported.
8Engine
7Electrical system2 crash/fire/injury
5Fuel/propulsion system
4Exterior lighting
4Equipment
3Power train
3Tires
2Visibility/wiper
1Wheels
44 other systems
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Engine | 8 | 0 |
| Electrical system | 7 | 2 |
| Fuel/propulsion system | 5 | 0 |
| Exterior lighting | 4 | 0 |
| Equipment | 4 | 0 |
| Power train | 3 | 0 |
| Tires | 3 | 0 |
| Visibility/wiper | 2 | 0 |
| Wheels | 1 | 0 |
| 4 other systems | 4 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
5 recalls
2018 GMC Sierra 2500 recalls and how many were fixed
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
repaired · 2025 Q1
Storage: tank assembly
Risk. An engine stall increases the risk of a crash.
repaired · 2024 Q1
Electrical: engine block heater
Risk. An electrical short-circuit can increase the risk of a fire.
repaired · 2022 Q1
Engine
Risk. A short-circuit may damage the engine components and increase the risk of fire.
Show 1 more recall
repaired · 2022 Q4
Front: retractor
Risk. The seat belt retractors may not perform as intended during a crash, increasing the risk of injury.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with GMC.
Best & worst years
2018 vs. every other Sierra 2500 year
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Sierra 2500 median. How we score
'97'98'99'00'01'02'03'04'05'06'07'08'09'10'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25'26
- Avoid
- Caution
- Solid
- Best
- Not rated
NHTSA crash tests
2018 GMC Sierra 2500 safety ratings
2018 GMC Sierra 2500 PU/EC RWD in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.
★★★★★Overall rating
- Rollover: 3 stars (20.4% risk)
- Stability control: Standard
- Forward collision warning: Optional
- Lane departure warning: Optional
In owners' words
What Sierra 2500 owners report
Recent engine complaints filed with NHTSA, shortened. Personal details are removed.
GM Duramax L5P diesel engine electrical connector for #4 fuel injector. This failure caused the Diesel exhaust brake, which controls downhill speed, to disengage, extreme shaking of the vehicle, emissions system warning and speed limiting. This occurred while descending a steep grade while towing a…
Metal in the fuel filter and throughout the fuel system, 38 codes on the computer just in 2 weeks after a full service again at the dealer. All service has been preformed at A GMC Dealer since truck was serviced. 1. P026D - Fuel injection Quantity “A” Higher then expected 2. P06CC - cylinder 8…
Constant issues with glow plug failures, fuel rail failure, fuel pressure failure. Truck has been in the Gmc service regarding these issues constantly for the last year with a total of five repairs and replacement of glow plugs with releaning learning new plugs and now the 6th return to the shop…
Own a 2018 Sierra 2500?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.