Seville V8-273 4.5L (1989)
Body Control Module: All Technical Service Bulletins
BCM EPROM - Calibration Summary
Bulletin No.: T-93-112
File in Group: 8
Number: 161
Corp.Ref.NO.: 818306R
Date: July 1993
SUBJECT:
BCM EPROM CALIBRATIONS
MODELS AFFECTED:
1985-1993 DE VILLES AND FLEETWOODS (FWD)
1986-1991 ELDORADOS AND SEVILLES
1987-1993 ALLANTES
This bulletin supersedes bulletin T-91-7 which should be discarded. This bulletin is being revised to include new model years and part numbers.
The charts summarize all of the EPROM calibrations made on 1985-1993 BCM equipped vehicles to date. When any diagnosis leads to BCM EPROM
replacement, the latest service EPROM part number listed should be used. Should any additional EPROM calibration changes be made, the GMSPO
parts distribution system will automatically supersede these service part numbers.
EPROM changes may be made for many different reasons. For instance, a calibration change may be made in conjunction with a components change for
a repair relative to a current field condition, or as a running change to provide minor modifications affecting the Electronic Climate Control or other
BCM controlled systems. Therefore, if an EPROM I.D. is different than that of the latest EPROM available it does not necessarily need replacement.
Refer to the bulletin listed for details about the symptom that may require an EPROM change.
The broadcast code is on a sticker on the EPROM. The PROM I.D. is BCM parameter P3.1 on 1985-1990 DeVille/Fleetwood; parameter P3.3 on
1991-1993 DeVille/Fleetwood; and parameter BD99 on the Eldorado, Seville, and Allante.
IMPORTANT:
PROM and BCM are ESD sensitive. Refer to Section 8A-4-0 of any Cadillac 1993 Service Information Manual for handling procedures.
