RAM 2500 2014 — technical service bulletin
Bulletin 09-002-15 · NHTSA communication 10150544 · issued Apr 18, 2015
Technical service bulletin
communication type
Engine and Engine Cooling
component
2014
model years
3
vehicle entries
Official summary
Knocking Noise From Engine After Sitting Overnight This bulletin involves evaluating the engine for cold start knocking noise typically after an overnight cold soak. Some engines during this build period may have been built with incorrect piston wrist pins. The wrist pins will cause an audible knocking noise upon start up. The knocking noise will typically reduce after approximately 30 minutes of idle time. Engine replacement will be required. Some customers may comment they hear an audible knocking noise coming form the engine after start up for approximately 30 minutes. This only occurs afte
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.