Hi guys the FNG here. I did a quick search but came up short. So i got an 86 trans am. Back of block on left side i can see it says "gm5.7lg sgi" could not see any other numbers but hard to get into that to look. So to me doesn't seem like the engine fan is coming on. Ran it up to around 240ish. How do i check system is functionally. Videos are great if ya got one on how to check wiring etc.

 

turn the A/C on full blast, if the fans don't come on then, well then any number of things could be wrong.