[Utah_jeepster]

First Welcome to the Jeepz board...
Second off the Grands are known for having the CPS (Crank shaft position sensor) go bad without sending a code. I will have to look up in my JP magazine collection to print what they say about it, but your second person I know who had the same problem with their Grands.

	Crank position sensor A crank sensor is a component used in an internal combustion engine to monitor the position or rotational speed of the crankshaft. This information is used by engine management systems to control ignition system timing and other engine parameters. Before electronic crank sensors were available, the distributor would have to be manually adjusted to a timing mark on the engine.