It is throttle body injection as that is all they use except on HIGH PERFORMANCE engines, where they use injectors on all cylinders.
I found this.
http://www.2carpros.com/makes/chevy/s10.htmQuestion: 1999 Chevy 4x4 5 spd. Mileage: 115,000. My S-10 Blazer stumbled due to fuel starvation, and died along the highway in the middle of the Arizona desert last week. Fuel is no longer being delivered to the TBI (throttle body injection). Fuel pump is new but does not come on when the cars ignition is turned on. All wires going to the pump are in good order. Replaced the fuel pump relay but no help. Put a test light on the relays contacts and found one wire was hot with the ignition on. Cannot find a fused link in the engine compartment and all fuses in the passenger compartment looked OK although I found none marked fuel pump. What is wrong with my Blazer?
Answer: First, check all the fuses while under load. Next check for 12 volts to the fuel pump as you may have a faulty fuel pump even though recently replaced. Finally, scan the computer for false codes if the first two check okay.
Question: 2000 Chevrolet/S10 pickup mileage: 70,000. When my gas tank is less than half full, the truck will not start. If the engine turns over, the truck shakes and sputters and dies. I replaced the fuel filter but the truck will still not start if the gas is less than half a tank. If the truck is running, it will not stall. Once stopped though, the automobile will not crank again though. Do you think that it is the fuel pump or the sending unit?
Answer: It is probably the fuel pump. Test it by checking the fuel pressure. Also, check the fuel pick-up that is inside the gas tank.
Question: 1987 Chevy S10 blazer mileage: 178,000. I'm having a "surging" problem on my old S10 blazer with 2.8. I've already replaced the TPS, Oxygen sensor, rebuilt the throttle body, and installed a transmission oil cooler to help fix another problem it's having with staying in overdrive and constantly wants to downshift. The problem also seems to get worse as the fuel level goes down. The gas mileage is a little better, but I'm still getting this "surging" which is also aggravating the transmission problem. Anyhow, I'm now in the process of replacing the in-tank fuel pump. Before I completely re-installed the tank, I thought I would try to run the pump in a pan of gas to make sure everything was working. It worked okay. To make sure though that the "real world" output was okay, I then installed the pump in the tank with a few gallons of fuel in it. I then ran the pump again with the tank level lying on the ground, but the pump's output now "surged" again to the same frequency I've been experiencing when driving the truck k. It sounds like the pump cavitates and then "loads down" as the screen picks up fuel again for a few seconds and then cavitates again. When driving, it does this surging especially the lower the fuel gets. I've got a feeling now that this fuel pump replacement isn't going to fix this problem. I checked to ensure that the pumps pickup is reaching all the way to the bottom of the tank (it's okay). The only thing I can think of is that there was either a recall of the fuel-tanks/fuel pump systems which was never done on this truck or the fuel tank/fuel pump in my truck are incompatible or wrong or something.
Answer: When we replace fuel pumps on S10 Blazers, we remove the accumulator that is located directly above the fuel pump and replace it with a longer hose.