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Transmission and drivetrainPart report

2004 GMC Sierra Denali Transmission and drivetrain Problems

Complaints
1about this part
Share
9%of 11 total for the year
Median mileage
108,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 1 complaints about the transmission and drivetrain of the 2004 GMC Sierra Denali, 9% of the 11 complaints for this model year. Where a mileage was given, the median is 108,000 miles.

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.

“I was driving down route 24 in lewes, delaware approaching a yellow light when the car in front of me stopped. I applied the brakes and they completely failed despite putting the peddle all the way to the floor. I was forced to veer onto the shoulder then into a farmers field in order to slow the truck down enough to force it into park. Apparently the hydraulic brake lines on these trucks are completely exposed to the elements and have a history of failing. Once that happens, the rear calipers lock up and there are no brakes at all switch can cause a crash. …”

NHTSA complaint #10611180, filed 2014-07, 108,000 miles

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
2019415%
2018212%
2017320%
2016930%
2015523%
201417%
201127%
2006120%
200419%

Other parts of the 2004 GMC Sierra Denali

Brakes
5 complaints
Electrical system
2 complaints
Air bags
1 complaints
Engine cooling
1 complaints
Seat belts
1 complaints
Steering
1 complaints
Suspension
1 complaints
Tires
1 complaints

← All problems reported for the 2004 GMC Sierra 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