you have an AC leak
Yes you can. There the same. Just take the parts / sending unit out of the 1987 tank and install them in the 1986 tank.
if the 4x4 isn't working then you need to check your transfer case. is it making any noises? or did it just stop working?
a car bomb
Well, I'm sure you can answer that yourself. You (the QuestioNer) are just a boasting person. You ain't gonna test us don't U?
I just had the fuel pump replaced in my 1999 Blazer. Total cost with parts and labor was $700. This was with an original equipment GM fuel pump, which I would recommend (aftermarket fuel pumps are cheaper, but don't last as long...and when your fuel pump goes bad, you'll be stranded because the truck won't start).
Bad ideal. Why would you want to ? It would just cause bad problems later.
I just bought this blazer and it only came with one key my dad had the same year blazer and it had keyless entry
It just depends on what state you are working in and where you are working at!!!!
If the fuel gauge isn't working on a 1999 Chevrolet Blazer it could possibly be because the float is stuck in the fuel tank. I had this problem when I got my 99 blazer, the float and sensor for the fuel gauge is on the fuel pump which is in the fuel tank to keep it temperature regulated. I had to replace my fuel pump, which ended up going bad on me, and after it was replaced the gauge works just fine.
There should be a black metal tube behind the engine with a pull ring. It's easily visible. Just need a funnel to fit in the tube and pour e tranny fluid in.
What year Blazer? Well I guess it doesn't matter too much! It's getting tired might be one reason. An electrical short (bare wire - power or ground). Do all speeds on the blower motor work when it is working? If not, a resistor would be a consideration, to fix that portion of the problem. Howerver, most likely, after you have inspected the wiring and its working swell, it's just a blower motor that is going bad. Repalce blower motor. Visit your local U-Pull It wrecking yard and purchase one for under $5.00.
I would suspect the fuel pump is bad.