2018 Gmc SIERRA 3500 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
14 owner complaints analyzed
6 distinct recall campaigns
53,800 mi median reported failure mileage
Scope: 2018 model year. Data snapshot: . 7 complaints include usable failure mileage.
Most common problems
Service Brakes is the most frequently named component, appearing in 6 of 14 complaints (42.9%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Braking behavior | 7 | 50.0% |
| Steering behavior | 3 | 21.4% |
| Electrical and battery issues | 1 | 7.1% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Service Brakes | 6 |
| Steering | 3 |
| Electrical System | 2 |
| Exterior Lighting | 2 |
| Electronic Stability Control (Esc) | 1 |
| Engine | 1 |
| Forward Collision Avoidance: Automatic Emergency Braking | 1 |
| Fuel System, Gasoline | 1 |
Service Brakes: 6; Steering: 3; Electrical System: 2; Exterior Lighting: 2; Electronic Stability Control (Esc): 1; Engine: 1; Forward Collision Avoidance: Automatic Emergency Braking: 1; Fuel System, Gasoline: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 3 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 3 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 1 |
Under 25,000: 3; 25,000 to 49,999: 0; 50,000 to 74,999: 3; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 1
Under 25,000 miles has the most reports with usable mileage (3). 7 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
2018: 2; 2019: 4; 2020: 1; 2022: 2; 2023: 1; 2024: 2; 2025: 1; 2026: 1
Pattern summary
Service Brakes leads the component reports. Braking behavior appears in 7 complaint narratives. Steering behavior appears in 3 complaint narratives. Electrical and battery issues appears in 1 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11278880 · 2019-11-08 (November 8, 2019)
TL* THE CONTACT OWNS A 2018 GMC SIERRA 3500. WHILE DRIVING APPROXIMATELY 60 MPH AND HAULING A TRAILER, THE ABS, SERVICE TRAILER BRAKE, SERVICE POWER STEERING, AND SERVICE STABILITRAK WARNING INDICATORS ILLUMINATED. ALSO, THE VEHICLE LOST BRAKING FUNCTIONALITY. THE CONTACT ALSO STATED THAT THE FAILURE OCCURRED WHILE NOT TOWING A TRAILER. THE VEHICLE WAS TAKEN TO BUSTER MILES CHEVROLET (1884 ALMON ST, HEFLIN, AL 36264, [phone removed]) TO BE DIAGNOSED, BUT THE MECHANIC WAS UNABLE TO RETRIEVE A FAULT CODE. THE CONTACT WAS INFORMED THAT THE FAILURE…
Owner-reported narrative. 16,068 miles reported. Look up ODI 11278880 at NHTSA ↗
Owner report 11281407 · 2019-11-20 (November 20, 2019)
I WAS DRIVING UP HILL THE TRUCK LOST POWER DIED/SHUTDOWN SO I HAD NO POWER STEERING NO POWER BRAKES WE LIVE ON A COUNTRY RURAL ROAD. HAD THE TRUCK TOWED TO KENDALL CHEVROLET IN EUGENE OREGON WHERE IT HAS BEEN SINCE NOVEMBER 2 WITH ELECTRICAL ISSUES THAT THEY ARE TRYING TO PINPOINT.
Owner-reported narrative. 58,000 miles reported. Look up ODI 11281407 at NHTSA ↗
Owner report 11075573 · 2018-03-01 (March 1, 2018)
STEERING WHEEL SHAKING FROM 70MPH TO 78 MPH HIGHWAY DRIVING
Owner-reported narrative. Look up ODI 11075573 at NHTSA ↗