1993 PCM Pin Out Chart (GM 4.3L, 5.0L, 5.7L GAS w/ 4L60-E)

  • By: Abraham Torres-Arredondo
  • Created: 21 March 2014
  • Updated: 29 March 2024
  • Articl Id: 570
Page 2 of 2

1993 PCM BLUE Connector

PCM Pin Out Chart 1993 4.3L, 5.0L, 5.7L With Automatic Transmission 4L60-E

One row of the BLUE PCM's connector is prefixed with the letter E and its 16 terminals are labeled E-1 thru' E-16. The other row is prefixed with the letter F and its 16 terminals are labeled F-1 thru' F-16 (see the illustration above).

BLUE PCM 32 Pin Connector
PinWire ColorDescription
 E-1GRYEGR Solenoid
 E-2WHT3-2 Shift Control Solenoid
 E-3---Empty
 E-4DK BLURange Signal B
 E-5REDRange Signal C
 E-6BRN/WHTCheck Engine Light (CEL)
 E-7DK BLU/WHTAir Bypass Valve
 E-8YEL/BLK2-3 Shift Solenoid Enable
 E-9LT GRN1-2 Shift Solenoid Enable
E-10TAN/BLKTCC Solenoid
E-11---Empty
E-12DK GRNA/C Request
E-13PPLBrake Switch
E-14GRYMAP, Linear EGR
E-15PNK/BLKIGN Fused
E-16ORNBattery Feed
 F-1PNKRange Signal A
 F-2---Empty
 F-3---Empty
 F-4---Empty
 F-5---Empty
 F-6DK GRN/WHTFuel Pump Relay Control
 F-7DK BLU/WHTPressure Control Solenoid 'Low'
 F-8DK BLU4WD Switch
 F-9ORN/BLKSerial Data
F-10RED/BLKPressure Control Solenoid 'Hi'
F-11WHTIgnition Control Module Signal
F-12BRNTransmission Output Speed
F-13DK BLUVSS Signal
F-14GRY5 Volt Sensor Reference Voltage (TPS, MAP)
F-15PNK/BLKIGN Feed
F-16DK GRNCanister Purge Solenoid
PCM Pin Out Chart 1993 4.3L, 5.0L, 5.7L With Automatic Transmission 4L60-E

Safety Precautions

Here are some very important safety precautions when testing the wires coming out of the PCM connectors.

  1. If one or any of the wires on your GM vehicle DO NOT match the color stated in the pin out charts then you should not use the pin out charts in this article. Why? Because this is the clearest indication that these ARE NOT the connector pin out charts for your particular vehicle.
  2. Never probe the front of the connector.
    • You should use a wire piercing probe and probe the wire a few inches away from the connector.
    • You should use a back probe.
  3. Read the Disclaimer.
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