Which code reader does the 93 s10 blazer vortec v6 use? Does using a jumper actually give you codes by flashing the SES light?

 

Yes using a jumper "aka paperclip" will give the codes by flashing the SES light on OBD I systems only, OBD II you have to use a scanner. Here's how I do it on my 94 Blazer. With the key off, stick the jumper across the A and B slot, turn the key forward but do not start the engine, after a few seconds the SES light will start to flash if codes are there. The SES will flash each code 3 times, something like this... flash flash flash pause 1-2 seconds flash flash flash then pause agian for about 3-4 seconds that = DTC 33. It then repeats the same code 2 more times, then move to the next code. I hope that helps. BTW you should be able to reset the codes by pushing the gas and brake pedal all the way to the floor and holding them there for about 3-4 seconds. Once you got the codes and reset them turn the key off, and remove the jumper. If you want to you can put the jump back repeat above and you should get a code DTC 12 which means no codes stored. Here's a list of DTC, please note they may only apply to the 6.5 Turbo Diesel such as my Blazer, but I think they should be the same for all Chevy's gas or diesel.


DTC 13 - Engine Shutoff Solenoid Circuit Fault
DTC 14 - Engine Coolant Temperature (ECT) Sensor Circuit Low (High Temp)
DTC 15 - Engine Coolant Temperature (ECT) Sensor Circuit High (Low Temp)
DTC 16 - Vehicle Speed Sensor Buffer Fault
DTC 17 - High Resolution Circuit Fault
DTC 18 - Pump Cam Reference Pulse Error
DTC 19 - Crankshaft Position Reference Error
DTC 21 - Accelerator Pedal Position 1 Circuit High
DTC 22 - Accelerator Pedal Position 1 Circuit Low
DTC 23 - Accelerator Pedal Position 1 Circuit Range Fault
DTC 24 - Vehicle Speed Sensor Circuit Low (Output Speed Signal)
DTC 25 - Accelerator Pedal Position 2 Circuit High
DTC 26 - Accelerator Pedal Position 2 Circuit Low
DTC 27 - Accelerator Pedal Position 2 Circuit Range Fault
DTC 28 - Transmission Range Pressure Switch Circuit
DTC 29 - Glow Plug Relay Fault
DTC 31 - EGR Control Pressure/Baro Sensor Circuit Low (High Vacuum)
DTC 32 - EGR Circuit Error
DTC 33 - EGR Control Pressure/Baro Sensor Circuit High
DTC 34 - Injection Timing Stepper Motor Fault
DTC 35 - Injection Pulse Width Error (Time Short)
DTC 36 - Injection Pulse Width Error (Time Long)
DTC 37 - TCC Brake Switch Stuck "ON"
DTC 38 - TCC Brake Switch Stuck "OFF"
DTC 39 - TCC Stuck "OFF"
DTC 41 - Brake Switch Circuit Fault
DTC 42 - Fuel Temperature Circuit Low (High Temp)
DTC 43 - Fuel Temperature Circuit High (Low Temp)
DTC 44 - EGR Pulse Width Error
DTC 45 - EGR Vent Error
DTC 46 - Malfunction Indicator Lamp (MIL) Circuit Fault
DTC 47 - Intake Air Temperature Sensor Circuit Low (High Temp )
DTC 48 - Intake Air Temperature Sensor Circuit High (Low Temp )
DTC 49 - Service Throttle Soon Lamp Circuit Fault
DTC 51 - PROM Error
DTC 52 - System Voltage High Long
DTC 53 - System Voltage High
DTC 54 PCM fuel circuit error
DTC 56 - Injection Pump Calibration Resistor Error
DTC 57 - PCM 5 Volt Shorted
DTC 58 - Transmission Fluid Temp Circuit Low
DTC 59 - Transmission Fluid Temp Circuit High
DTC 61 - Turbo Boost Sensor Circuit High
DTC 62 - Turbo Boost Sensor Circuit Low
DTC 63 - Accelerator Pedal Position 3 Circuit High
DTC 64 - Accelerator Pedal Position 3 Circuit Low
DTC 65 - Accelerator Pedal Position 3 Circuit Range Fault
DTC 68 - Transmission Component Slipping
DTC 69 - TCC Stuck "ON"
DTC 71 - Set/Coast Switch Fault (Cruise Control)
DTC 72 - Vehicle Speed Sensor Circuit Loss (Output Speed Signal)
DTC 73 - Pressure Control Solenoid Circuit (Current Error)
DTC 74 - Transmission Input Speed (TIS) Sensor Circuit
DTC 75 - System Voltage Low
DTC 76 - Resume/Accel Switch Fault (Cruise Control)
DTC 78 -Turbo Wastegate Solenoid Fault