2006 GMC Sierra Denali Transmission and drivetrain Problems
- Complaints
- 1about this part
- Share
- 20%of 5 total for the year
- Median mileage
- 34,650miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the transmission and drivetrain of the 2006 GMC Sierra Denali, 20% of the 5 complaints for this model year. Where a mileage was given, the median is 34,650 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.
“Front differential vibration/noise at 47-70 MPH. Internal bearings replaced due to significant metal found on magnetic drain plug. Technician statement bearings coming apart stated. Identical complaint with identical repair repeated 4 times within 85,000 miles. First repair occurred at 34,000 miles. Latest (4th) performed at 85,919 miles.”
NHTSA complaint #10455746, filed 2012-04, 34,650 milesRelated service bulletins
- 10028831Jun 1, 2015General motors: intermittent mil/ses/ dtc p2138 with reduced engine power (repair instrument panel (ip) to body harness connector). 2005-08 gm passengers cars/light duty trucks…
- 10113664May 29, 2015This informational bulletin provides technicians with information regarding automatic transmission oil cooler flow test essential tool J-45096 TransFlow®.
- 10113502Aug 26, 2013This warranty administration bulletin provide policy information on a revised customer concern not duplicated/verified labor operation numbers and how to submit CCND.
- 10112697Dec 27, 2012This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on, engine misfire…
- 10112681Dec 17, 2012This Preliminary Information communication provides information to the technician about vehicles that may have a planetary gear whine noise in first and second gear. Technician…
- 10112600Nov 26, 2012This Preliminary Information communication provides information to the technician with the axel setup information from American Axle Manufacturing. Technician should be advised…
- 10112523Oct 30, 2012This Preliminary Information communication provides information to the technician about vehicles that have slip in forward ranges immediately after replacing the input housing…
Transmission and drivetrain: other model years
Other parts of the 2006 GMC Sierra Denali
← All problems reported for the 2006 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