When a 1999 S10 is sluggish and surging with going up hills, perhaps there is a problem with the transmission. The filter might need to be changed, more fluid added, or it might need a complete overhaul.
Possibly a plugged catalytic converter.
Plugged fuel/air filter? Plugged catalytic converter? Engine timing? Check EGR Valve
We are going to need to know what engine you have in that 92 S10.
A 1987 s10 Blazer 4x4 weights around 10.6. This is going off curb weight.
Could be a bad spark plug or spark plug wire. Time for a good tune up.
An S10 is the same as a Chevy S10.
you dont. go get a 2 wheel drive if your going to lower it
The illumination switch may be in the off position.
We are going to need to know what engine you have in that 93 S10.
The water pump is going bad.
your clutch is probably shot
if it is a new style s10 they had a common problem of the wiper control module going bad and intermittenly quiting. the module is located underneath the wiper motor cover.