Jeep Grand Cherokee 2015 — technical service bulletin
Bulletin 1807414 · NHTSA communication 10229914 · issued Dec 19, 2014
Technical service bulletin
communication type
Electrical System
component
2015
model years
1
vehicle entries
Official summary
Flash: 3.0L Powertrain Diagnostic And System Enhancements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. The following software is being released to improve A/C compressor relay duty cycle operation to prevent ignition off battery draw.
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.