1991 GMC Syclone Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 1991 GMC Syclone, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Brakes562.5%
- Engine112.5%
- Powertrain (other)112.5%
- Transmission112.5%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Brakes
Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.
From owner reports, verbatim
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
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
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
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
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.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Transmission
Reports naming the automatic or manual transmission, including shifting behaviour, shudder, slipping and transmission control modules.
From owner reports, verbatim
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
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .