Since the 2002 4.2 came with an oil level and oil temp sensor...

Oil level I think it just says to check oil level when the truck is first started with no bells or anything. Not sure what it would do on a non-DIC truck.

AFAIK, there is no warning for an overtemp oil situation. These trucks don't even have an oil cooler. Can't say I remember an oil temp sensor on these at all.
 
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Somewhere I saw it was both an oil level and temperature sensor but it looks like it's only an oil level sensor. I couldn't find anything mentioned in my owners manual either.
 

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