Dodge Durango 2011 — technical service bulletin
Bulletin 21-004-13 · NHTSA communication 10136850 · issued May 10, 2013
Technical service bulletin
communication type
Power Train
component
2011
model years
2
vehicle entries
Official summary
Flash: Drivetrain Control Module (DCTM) - Transfer Case Operational Enhancements This bulletin involves flashing the Drivetrain Control Module (DCTM) Owners may indicate that they have experienced one or more of the following symptoms:Moaning or groaning noise while coasting and/or during a very light acceleration around 5 to 8 mph (8 to 13 kph).The SERV 4WD message appears and the vehicle shifts from 4WD to 2WD.Binding of the front driveline while turning on steep grades at speeds around 3 to 5 mph (5 to 8 kph).Surge/Shudder at speeds greater than 50 mph (80 kph).
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.