Dodge Durango 2011 — technical service bulletin
Bulletin 21-004-13 · NHTSA communication 10188672 · issued May 10, 2013
Technical service bulletin
communication type
Engine and Engine Cooling
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.