There could be a lot of reasons that your Jeep Cherokee does not start, like a weak battery, battery corrosion, dead PCM, defective starter motor, key Fob problem, fuel supply issue, engine timing issue, engine failure, and so on.
The GPS in a Jeep Grand Cherokee may not work due to several reasons, including an older version of the Uconnect system, bad signal reception from the antenna, or a frozen GPS screen. To fix the issue, it is essential to understand how the GPS in the Grand Cherokee operates.