what would cause a oil pressure gauge to fluctuate on my 99 Chevy truck silverado i change the sending unit it does it mostly after it warmed up
Oil leak and overheating?
Yes.. But it would be cheaper to just buy the whole regulator and replace it.
not enough freon or too much
yes, as long as it has the same box syle body like an 84 silverado would have.
it all depends on the body style whether its the same or not
The same thing happened to my dads 96 Chevy S-10. The transmission was rusted not allowing it to shift. I would have the transmission checked out.
Need more information, Engine size would help. You will need to ask your question again.
it could but you might need to trim the rear a little
Low fuel pressure
Yes it will. Those 2 engines are the same. That would be a direct swop.