DeVille V8-4.9L VIN B (1995)
2.
After determining the PROM ID number of the Mem-Cal which is currently installed in the vehicle, refer to Table 2 of this bulletin. Find the
model year, carline and emission system of the vehicle being serviced. Identify the old Prom ID number as recorded on the repair order.
Determine the new Prom ID number and Mem-Cal part number to be installed in the PCM as indicated on the right side of the table.
Caution:
To prevent internal PCM damage, the ignition must be "off" when disconnecting or reconnecting power to the PCM.
The Mem-Cal and PCM are sensitive to electrostatic discharge. Follow these procedures before handling these components to reduce any possible
electrostatic charge build up on the technician's body and inadvertent discharge to the electronic part:
