Total Complaints
8 filings
GMC SYCLONE · model year
1991 GMC SYCLONE
8 NHTSA complaints, 2 crash reports for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 1991GMCSYCLONE carries 8 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 2 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 1991 SYCLONE is service brakes, hydraulic:antilock/traction control/electronic limited slip with 5 filings, followed by power train:automatic transmission (1) and engine and engine cooling:engine:gasoline:turbo/supercharger (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 2 investigation files overlapping the 1991 SYCLONE. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
8
Complaints
2
Crashes
0
Fires
0
Injuries
0
Deaths
Crashes Reported
2 reports
Source
NHTSA ODI
Federal complaints database
Complaints vs. fleet median (215)
At or below the fleet median complaint volume.
Complaints by Component
| Component | Count |
|---|---|
| SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP | 5 |
| POWER TRAIN:AUTOMATIC TRANSMISSION | 1 |
| ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER | 1 |
| POWER TRAIN:DRIVELINE:DRIVESHAFT | 1 |
Recent Complaints
20000207CrashSERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
WHILE DRIVING IN STOP AND GO TRAFFIC TRAVELING 3-5MPH, VEHICLE IN FRONT STOPPED SUDDENLY. CONSUMER WENT TO APPLY BRAKES, AND BRAKES FAILED AND PEDAL WENT TO THE FLOOR. DENTED THE BUMPER, AND CRACKED THE GRILL. DIDN'T CONTACT DEALER. *AK
19991122SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
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.
19991122POWER TRAIN:DRIVELINE:DRIVESHAFT
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.
19990727CrashSERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
FAILED TO STOP AND CRASHED INTO REAR OF VEHICLE IN FRONT OF ME
19981130SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
THE CONSUMER HAS BEEN EXPERIENCING PROBLEMS WITH ANTI-LOCK BRAKE SYSTEM. WHEN APPLYING THEIR BRAKES, DRIVER'S FOOT GOES ALL THE WAY TO THE FLOORBOARD. THE MANUFACTURER HAS YET TO BE CONTACTED. INVESTIGATION NUMBER EA94038. *AK
19980302SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
ANTI-LOCK BRAKE SYSTEM FAILED.
19950109POWER TRAIN:AUTOMATIC TRANSMISSION
PURCHASE THE TRUCK 18 MONTH USED TRUCK BEEN IN THE SHOP 8 MONTHS ON THE TRANSMISSION TWICE AND TURBO CHARGER BEEN REPLACE THREE TIME. TT
19950109ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
PURCHASE THE TRUCK 18 MONTH USED TRUCK BEEN IN THE SHOP 8 MONTHS ON THE TRANSMISSION TWICE AND TURBO CHARGER BEEN REPLACE THREE TIME. TT
Compare 1991GMCSYCLONE to Similar Vehicles
NHTSA Investigations
Frequently Asked Questions
How many complaints does the 1991 GMC SYCLONE have?▼
The 1991 GMC SYCLONE has 8 NHTSA complaints, 2 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What are the most common problems with the 1991 GMC SYCLONE?▼
The most-complained component for the 1991 GMC SYCLONE is SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP with 5 complaints. Other frequently reported areas include POWER TRAIN:AUTOMATIC TRANSMISSION and ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER.
Is the 1991 GMC SYCLONE safe to buy?▼
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. No NHTSA crash test rating is available for this model year. Compare with other model years using the links above.
Where does this data come from?▼
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.
Vehicle Safety Guides
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.