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Jeep TSB #18-049-16 REV. B
2017 Jeep Grand Cherokee
TSB Document:
Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
- Summary
- Flash: Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTCs set in the PCM memory: P2681 - Engine Coolant Bypass Valve Control Circuit Open (3.6L Only). P0335 - Crankshaft Position Sensor Circuit. P2299-00 - Brake Pedal Position/Accelerator Pedal Position Incompatible. B23C3 - Stop/Start Disable Switch 1/2 Correlation (3.0L and 3.6L Only).In addition, customers may experience the following conditions: A shorter auxiliary battery life. An illuminated Automatic Oil Change Indication (AOCI) light (3.6L Only).Other enhancements included in this update: Improved knock sensor performance.
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