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The following is a list of MEMCALs that have been used in the Syclone and/or Typhoon. The Scan ID is the 16-bit number that is transmitted to a scan tool as a PROM ID . The Delco ID is the letters/numbers that are on the Delco sticker on the MEMCAL. The Part Number is the AC Delco (GM) part number for that MEMCAL.

Scan ID
Delco ID
Part #
3051
axxa 3086
1613085
3961
aybm 4052
3961
aybm 4053
16164052
3971
aybn 4175
16164174
8581
awxj 9137
1615136
831
bbza 1576
16181575
841
bbzb 1580
16181579
0
doac 6502

The AXXA 3086 was in the early Syclones. GM issued a "campain" PROM, AYBM 4052, to address some driveability issues. The AYBM 4053 is the same as the AYBM 4052, only it has a different Date Code and Sequence Number. The AYBN 4175 has been found in both late Syclones and early Typhoons. No details on the AWXJ 9137 have been obtained and it has been discontinued by GM. The BBZA 1576 has been found in '93 Typhoons with the BBZB 1580 being the current GM MEMCAL for the Typhoon. The DOAC 6502, also known as the 'NM8', belongs to the MEMCAL of the Saudi Syclone and Typhoon and is designed to run leaded fuel without an Oxygen (O2) sensor.

 

Matt H
Robert P
Les Y
Tony M
Jeff D
Nolan N
Jack O
Mark L
Hunter
John W
9.89@137 10.26@13
10.29@137 10.71@126
10.79@126
10.95@123
11.00@128
11.00@122
11.19@121
11.20@128
Sy
Sy
Sy
Sy
Sy
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Sy
Sy
Ty
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