Jeep Grand Cherokee 2015 — technical service bulletin
Bulletin 1804316REVA · NHTSA communication 10228111 · issued May 12, 2016
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. A small number of customers may experience the following condition: · Buzzing type noise in the fuel rail area of the engine. · Bucking under hard acceleration. The software enhancements also include: · Improvements to protect engine from fuels out of the EN590 specifications or fuels with a high biodiesel content. · Improvements to the 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.