I have a '99 4WD Blazer 4.3 LS. A tire changer said my oil cooler hoses were leaking. I said how many and he replied 4. I notice that everyone speaks of only 2 hoses. Which is correct? He quoted $600 to replace all four. Any opinions on cost, how many lines. I do see 4 lines but are they all related to oil cooler lines? Any advice is helpful. Thanks in advance.

 

There are two assemblies, each having 2 hoses each. $600 is straight up highway robbery. Run away.