2010 Laredo transmission overheating and car won't start.

Transmission sticks in reverse- won't go into park. - JeepsUnlimited

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Jun 14, 2013 - 12 posts - ‎5 authors 2003 6 cyl 4x4 Grand Cherokee Laredo automatic- Occaionally, when shifting from REVERSE TO PARK, my Jeep will stay in reverse. Typically its ... '2001 WJ'4,0L'42RE'NV 242'380000 km'ECE Compliant' ??????????? ??? ...

2001 jeep grand Cherokee laredo - CarGurus

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CarGurusJan 27, 2014 - 2001 jeep grand Cherokee laredo - Just purchased a 2001 Jeep GrandCherokee Laredo and ... It starts in PARK sometimes and sometimes it won't and I have to start it in Neutral. ... Hatch shuts flush, but won't stay shut. help!

I'm not really familiar with JEEP mechanics but if you've replaced your water pump and it's still overheating with full water/coolant level, you should check the thermostat; when it fails, it's a common cause or overheating in all kind of cars

I'm attaching some links to Youtube tutorial about replacing thermostat in a Jeep but you can expand your Google search using terms
Youtube replace thermostat JEEP Liverty

https://www.youtube.com/watch?v=Y3NpLdG993U

Jeep 4 0L straight six thermostat replacement

Thermostat Replacement Overheating fix Part 1 Jeep


How To Change the Thermostat in Jeep Wrangler


2002 Jeep Grand Cherokee Thermostat Replacement

Replacing the radiator thermostat in any Jeep Cherokee Jeep liberty Jeep...

I don't see how leaking transmission fluid would be connected to the engine overheating, unless the radiator blew up.
You'll need to figure out why it won't start to proceed.
Check for spark and fuel pressure, and of course compression.
Is the check engine light on ?

Try these troubleshooting tips before replacing anything else.

If it was overheating at freeway speed then it is a clogged radiator. Another cause of overheating is a timing that is retarded. These can be caused by worn timing components etc, although a possiblity it is highly unlikely on your car.

If the engine is not overheating then the radiator cap seal is faulty

What does your temperature gauge say? Make sure you're not overheating. Steam is always an indicator that something is amiss with the radiator. Never open it when it's hot!

fan relay or fan module