Transmission and drivetrainPart report
1991 International Harvester School BUS Transmission and drivetrain Problems
- Complaints
- 2about this part
- Share
- 33%of 6 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the transmission and drivetrain of the 1991 International Harvester School BUS, 33% of the 6 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Transmission and drivetrain: other model years
Other parts of the 1991 International Harvester School BUS
Electrical system
1 complaintsEngine cooling
1 complaintsBody and structure
1 complaintsSuspension
1 complaints
1 complaintsEngine cooling
1 complaintsBody and structure
1 complaintsSuspension
1 complaints
← All problems reported for the 1991 International Harvester School BUS
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology