| Bulletin Date: | Apr. 4, 2013 |
| Component: | Engine (pws) |
| Bulletin Summary: | This technical service bulletin addresses two failure modes of thermostat failures that result in engines experiencing excessive cooling of the engine coolant. The two failure modes are the thermostat stuck/seized in the open position and |
| Vehicles covered in this TSB: |
Cummins Ism 11,
Cummins ISX,
Cummins ISX15,
Cummins L10,
Cummins M10,
Cummins Signature.
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