GMC Syclone Problems by Model Year
NHTSA recorded 6 consumer complaints across the 1 model years of the GMC Syclone (1991–1991) that have at least 5 complaints. 1991 has the most, with 6. Across all years, the part named most often is brakes (5 mentions). Pick a model year below to see its parts, mileage, recalls and service bulletins.
All Syclone model years
Years with fewer than 5 complaints are not listed. The score compares years of the same model, allowing for the era and for how long each year has collected complaints: 50 is a typical year, lower means fewer complaints. It is not adjusted for sales volume.
| Year | Complaints | Median mi | Recalls | TSBs | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|
| 1991 | 6 | — | 0 | 0 | — | Not enough data |
Parts named most often, all years
Counts add up complaint mentions across the listed years. A complaint can name several parts.
- Brakes5 63%
- Transmission and drivetrain2 25%
- Engine cooling1 13%
Example complaints
One per model year, chosen for length and detail. Personal details are removed. They are consumer reports, not findings.
1991: “Front shaft from transfer case to differential failed, replaced under factory warranty, ABS brake master unit failed at 52,550 miles outside the extended warranty by 6 months dealer refused to repair under warranty, wanted $1200+ in parts plus labor to repair, cannot afford to repair at this time.”
NHTSA complaint #715099, filed 1999-11Other GMC models
9,015 complaintsGMC Acadia
5,592 complaintsGMC Yukon
5,013 complaintsGMC Sierra
3,929 complaintsGMC Terrain
3,135 complaintsGMC Jimmy
2,712 complaintsGMC Envoy
2,456 complaintsGMC Yukon XL
2,442 complaints
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Methodology