I believe i used only a 15 mm wrench when I did one a few years back.
Impact and wrenches
Common hand tools, sockets and wrenches. Nothing special.
No, special tools are not needed to change a fuel filter on a 1987 - 1990 Chevy Celebrity. The proper size of open end wrenches work fine.
A 3/8 Allen key.
More explanation needed.
I believe that is 3/8 Allen
is a special tool needed
A set of wrenches (ussually Mitsubishi has metric system), a screwdriver, a hammer, a set of clamps to release calipers, and special fluid for cleaning rotars (you can buy in local auto part stores).
No special tools needed.
The bolts on the starter take a 5/8 inch wrench. The battery cable is a 13mm wrench.
Common hand tools in Metric or Standard size. More than likely Metric. Ratchet. Sockets, boxed end wrenches, open end wrenches. No special tools required. Metric shallow well sockets. IIRC, it's 15mm for both the belt tensioner and the bolts which actually hold the alternator in place. I don't recall what the nut holding the wire from the alternator to the battery is offhand, but you should find something which works in a metric socket set. Also, a small prybar would be handy... the alternator tends to be a pretty tight fit in the Vortec 4.3. I've never needed wrenches for one of these alternators, although you always have the option to use them if you should so wish. It's a pretty simple thing to do, and the Blazer/S10 platform makes it readily accessible.
A three jaw puller, a serpentine belt tool, and sockets/wrenches.A three jaw puller, a serpentine belt tool, and sockets/wrenches.