Go to: Main Menu | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 |
Firebird EPROM Identification Numbers for 1991
This Decal May differ year to year
VIN 8th didget |
Engine |
RPO Codes |
Options & Emissions Designation |
Production Broadcast Code |
Production (ECM #) |
Service Controller # (ECM) |
Production PROM Code |
8 | 5.7 TPI | MD8 | A/Trans |
ANJF, ANJA, AUJP |
16151348 | 1227730 |
4307ANJF, 4312ANJA, 1350AUJP |
E | 5.0 TBI | MD8 | A/Trans |
ANTS AXKS |
16161107 |
1228746 |
8022ANTS 1108AXKS |
NB2 | Calif | ||||||
E |
5.0 TBI |
MD8 |
A/Trans |
ANTT AXKT |
16161112 |
1228746 |
8026ANTT 1113AXKT |
NA5 | Fed | ||||||
E |
5.0 TBI |
M39 |
M/Trans |
ANTP, APTX |
16161117 |
1228746 |
8010ANTP 2250APTX |
NB2 | Calif | ||||||
E |
5.0 TBI |
M39 |
M/Trans |
ANTR, APTY AXKW |
16161123 |
1228746 |
8016ANTR 2254APTY 1124AXKW |
NA5 | FED | ||||||
F | 5.0 TPI | MK6 |
M/Trans |
ATNX, AWFZ, ANJS, ANJJ, AXYC |
16163138 |
1227730 |
5668ATNX 5504AWFZ 9483ANJS 9508ANJJ 3160AXYC |
T | 3.1 MPFI | MD8 | A/Trans |
ALSZ, ATFM, ATXF, ARPM, AUJW AYCH, AZYT |
16171406 |
1227730 |
2715ALSZ 4201ATFM 7700ATXF 5185ARPM 0976AUJW 4297AYCH 1407AZYT |
NA5 | Fed Emissions | ||||||
T | 3.1 MPFI | MD8 | A/Trans |
ALTD, ATFN, ATXH, ARPN, AUJX AYCF AZTX |
16171410 |
1227730 |
2711ALTD 4207ATFN, 7703ATXH 5189ARPN 0982AUJX 4293AYCF 1411AZTX |
NB2 | California Emissions | ||||||
F | 5.0 | MD8 | A/Trans |
ASYT, AUTR |
16153072 |
1227730 |
3688ASYT 3188AUTR |
NA5 | Federal Emissions | ||||||
F | 5.0 | MD8 | A/Trans |
ARZC, AWFU, AXXB |
16163062 |
1227730 |
9171ARZC 5509AWFU 3036AXXB |
QPE | 16" Tires | ||||||
QPH | 15" Tires | ||||||
F | 5.0 | M39 | M/Trans |
ARZF, AWFW, AXXC |
16163066 |
1227730 |
9176ARZF, 5514AWFW, 3067AXXC |
QPE | 16" Tires | ||||||
QPH | 15" Tires | ||||||
F | 5.0 | M39 | M/Trans |
AWFX, AXXD |
16163070 |
1227730 |
5518AWFX, 3072AXXD |
QLC | 16" Tires | ||||||
F | 5.0 | MD8 | A/Trans |
ARZU, AWFY, AXXF |
16163075 |
1227730 |
9184ARZU, 5523AWFY, 3076AXXF |
QLC | 16" Tires | ||||||
T | 3.1 | MB1 | M/Trans |
ARPL, ARPK, BAWX |
16176864 |
1227730 |
5180ARPL, 5176ARPK, 6865BAWX |
VIN | Engine Displacement | Engine Type | Service Controller # (ECM) |
T | 3.1 | MPFI | 1227730 |
E | 5.0 | TBI | 1228746 |
F & 8 |
5.0 & 5.7 |
TPI |
1227730 |
NOTE: The above is NOT a mistake, the 1227730 was used in both the 3.1 & 305/350 TPI
NOTE: 1227727 is a under the hood waterproof version of the 1227730
Tuning the 1227730 Visit http://www.diy-efi.org/gmecm/ecm_info/1227730/qanda.html
See a picture of the innards at www.jeack.com