Jeep GRAND CHEROKEE 2016 Owner's Manual page 7

INTRODUCTION 5
This information may be used to determine if repair will
1
be covered by New Vehicle Limited Warranty.
There is a probability that the use of a "performance
chip" will prohibit the engine from starting. In this
instance, the vehicle will need to be serviced by a
authorized dealer in order to return the vehicle to it's
factory settings.
When it comes to service, remember that your authorized
dealer knows your Jeep® vehicle best, has factory-trained
technicians and genuine MOPAR® parts, and cares about
your satisfaction.