G 3500 1 Ton Van V8-454 7.4L VIN N TBI (1995)
Retaining Clips
INSPECT
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Retaining clip have snapped into place.
INSTALL OR CONNECT (Figure 1)
1. Access cover on PCM.
2. PCM to mounting bracket in correct location and perform On-Board Diagnostic (OBD) System Checks to confirm proper installation. Refer to
System Diagnosis/Procedures.
FUNCTIONAL CHECK
1. Turn ignition ON.
2. Enter diagnostics.
A. Diagnostic Trouble Code (DTC) 12 should flash four times (if no other DTC[s] are present). This indicates the PROM (MEM-CAL) is
installed properly, and the PCM is functioning.
B. If DTC 51 occurs, or if the MIL is "ON" constantly with no DTC(s), the PROM (MEM-CAL) is not fully seated or is defective.
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If not fully seated, press firmly on the ends of the PROM (MEM-CAL).
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If it is necessary to remove the PROM (MEM-CAL), follow the previous removal instructions.
NOTE: To prevent possible Electrostatic Discharge damage to the PROM (MEM-CAL), Do Not touch the component leads, and Do Not remove
integrated circuit from carrier.