I'm having a very similar issue, i think it's related to water somehow and it's sent me on a heck of a journey that still isnt' finished. Has anyone seen if the fuel pump model would cause this behavior? I have a fuel level sensor alert that has been randomly shown up on scan but never had problem with fuel level gauges, needless to say journey of past 12 months have involved flex going into limp mode, involving new throttle body, new ECM, new differential, new wheel sensors, new 4x4 control module, oh and power steering leak so replaced the rack for that as well. and still have the same damn issue with advance trac Christmas lights. with no idea what is the cause do I need to start jumping around taping on things to see what wire maybe the cause? We've concluded that when the instrument cluster is disconnected the hole system communicates properly, is there anything known downstream of the cluster that could be causing the cluster to fritz out?
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