1999 GMC Denali Transmission and drivetrain Problems
- Complaints
- 1about this part
- Share
- 7%of 14 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the transmission and drivetrain of the 1999 GMC Denali, 7% of the 14 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“While driving about 15 MPH had heard a loud noise from transmission like somebody had strucked vehicle and continued driving, but when got in front of house engine stopped working, and noticed that transmission had blownout. Dealer would like to fix vehicle, but consumer would like to have more information about it. Please consumer provide more information.”
NHTSA complaint #899539, filed 2001-11Transmission and drivetrain: other model years
Other parts of the 1999 GMC Denali
5 complaintsElectrical system
4 complaintsEngine cooling
1 complaintsSteering
1 complaintsSuspension
1 complaintsVisibility (wipers, defrost, mirrors)
1 complaints
← All problems reported for the 1999 GMC Denali
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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