GM P4 ECM Crossreference

Last update: October 31, 2000

This page lists the several generations of GM engine, powertrain, and vehicle control modules which are characterized by having a single EPROM or EEPROM containing both the vehicle calibration and program code.

This page does not cover the older C3 generation of ECMs. It also does not cover any flash based control modules. Items in italics are unverified.

An incomplete list of ECMs/PCMs/VCMs:

1227165
1227303
1227727
1227730
1227748
1227749
1227752
1228321
1228331
1228253
1228706
1228707
1228708
16132792

16134847
16141470
16149396
16153597
16156647
16159278
16159282
16163993
16168625
16183247
16186695
16191947
16196344
16196393

16196395
16196401
16196404
16197128
16197427
16198259
16198260
16198262
16198263
16198264
16198266
16198267
16199982

An incomplete list of Australian ECMs/PCMs/VCMs:

1227277
1227808
16146299
16176424

16183082
16195699
16199728
16206305

16208252
16208257
16210672
16234531

Car ECM selection by model year and engine type:

1986 1987 1988 1989 1990 1991 1992 1993 1994 1995

1.6 OHC L4 TBI “6” L73 (LeMans) 1227303 1227303 1227303 1227303 1227303 1227303

1.9 L4 TBI “9” (Saturn) … … …

1.9 L4 PFI “7” (Saturn) … … …

2.0 OHC L4 TBI “K” LT2 (LeMans) 1227303 1227303 1227303

2.0 L4 TBI “P” LQ5 1227165

2.0 L4 TBI “1” LL8 1227730 1227730
1228321 1228321

2.0 OHC L4 TBI “K” LT2 1227748 1227748 1227748 1227748 1227748

2.0 OHC L4 PFI turbo “M” LT3 1227749 1227749 1227749 1227749

2.0 OHC L4 PFI “H” LE4 16159282 16159282 16159282
16196393

1986 1987 1988 1989 1990 1991 1992 1993 1994 1995

2.2 L4 TBI “G” LM3 1227748 1227748

2.2 L4 PFI “4” LN2 16134847 16134847 16191947 16191947

2.3 DOHC L4 PFI “D” LD2
(exc. “W” body) 1227749 1227749 1228707 1228707 1228707 16156450 16173278 16183978 16183978
16191947
16193700
16196285

2.3 DOHC L4 PFI “D” LD2
(“W” body) 1228708 1228708

2.3 DOHC L4 PFI “A” LG0
(exc. “W” body) 1228707 1228707 1228707 16156450 16156450
16173278 16191947

2.3 DOHC L4 PFI “A” LG0
(“W” body) 1228708

2.3 DOHC L4 PFI “3” L40 16156450 16173278 16191947

2.5 L4 TBI “R” LR8
(exc. “W” body) 1227748 1227748 1227748 1227748 1227748 1227748

2.5 L4 TBI “R” LR8
(“W” body) 1227727 1227727 1227727

1986 1987 1988 1989 1990 1991 1992 1993 1994 1995

2.5 L4 TBI “U” L68 1227748 1227748 1227748 1227748 1227748

2.8 V6 PFI “W” LB6
(exc. “W” body) 1227730 1227730 1227730

2.8 V6 PFI “W” LB6
(“W” body) 1227727 1227727

3.1 V6 PFI “T” LH0
(exc. “W” body) 1227730 1227730 1227730 1227730 1227730 1227730

3.1 V6 PFI “T” LH0
(“F” body) 16196404 16196404 16196404

3.1 V6 PFI “T” LH0
(“W” body) 1227727 1227727 1227727 1227727 1227727
16149396

3.1 V6 SFI “T” L82 16184164

3.1 V6 SFI “M” L82 16196387 16196387

3.1 V6 PFI turbo “V” LG5 1227727 1227727

1986 1987 1988 1989 1990 1991 1992 1993 1994 1995

3.3 V6 PFI “N” LG7 1228706 1228706 1228706 1228706 1228706

3.4 DOHC V6 PFI “X” LQ1 16149396 16149396 16149396

3.4 DOHC V6 SFI “X” LQ1 16196401 16196401

3.8 V6 SFI “C” LN3 1228253 1228253 1228253 1228253

3.8 V6 SFI “L” L27
(exc. “W” body) 16141470 16141470 16141470 16183247 16183247

3.8 V6 SFI “L” L27
(“W” body) 16132792 16132792 16132792

3.8 V6 SFI “K” L36 16183247

3.8 V6 SFI supercharged “1” L67 16141470 16141470 16141470 16183247 16183247

5.0 V8 TPI “F” LB9 1227165 1227165 1227165 1227165 1227730 1227730 1227730

1986 1987 1988 1989 1990 1991 1992 1993 1994 1995

5.7 V8 TPI “8” L98
(“F” body) 1227165 1227165 1227165 1227730 1227730 1227730

5.7 V8 TPI “8” L98
(“Y” body) 1227165 1227165 1227165 1227165 1227727 1227727

5.7 V8 TPI “P” LT1 16159278 16159278

5.7 DOHC V8 SFI “J” LT5 1228331 1228331 16163993 16163993 16163993 16163993

	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995
1.6 OHC L4 TBI “6” L73 (LeMans)		1227303	1227303	1227303	1227303	1227303	1227303
1.9 L4 TBI “9” (Saturn)		…	…	…
1.9 L4 PFI “7” (Saturn)		…	…	…
2.0 OHC L4 TBI “K” LT2 (LeMans)		1227303	1227303	1227303
2.0 L4 TBI “P” LQ5	1227165
2.0 L4 TBI “1” LL8		1227730	1227730 1228321	1228321
2.0 OHC L4 TBI “K” LT2		1227748	1227748	1227748	1227748	1227748
2.0 OHC L4 PFI turbo “M” LT3		1227749	1227749	1227749	1227749
2.0 OHC L4 PFI “H” LE4		16159282	16159282	16159282 16196393
	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995
2.2 L4 TBI “G” LM3		1227748	1227748
2.2 L4 PFI “4” LN2		16134847	16134847	16191947	16191947
2.3 DOHC L4 PFI “D” LD2 (exc. “W” body)		1227749	1227749	1228707	1228707	1228707	16156450	16173278	16183978	16183978 16191947 16193700 16196285
2.3 DOHC L4 PFI “D” LD2 (“W” body)		1228708	1228708
2.3 DOHC L4 PFI “A” LG0 (exc. “W” body)		1228707	1228707	1228707	16156450	16156450 16173278	16191947
2.3 DOHC L4 PFI “A” LG0 (“W” body)		1228708
2.3 DOHC L4 PFI “3” L40		16156450	16173278	16191947
2.5 L4 TBI “R” LR8 (exc. “W” body)		1227748	1227748	1227748	1227748	1227748	1227748
2.5 L4 TBI “R” LR8 (“W” body)		1227727	1227727	1227727
	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995
2.5 L4 TBI “U” L68		1227748	1227748	1227748	1227748	1227748
2.8 V6 PFI “W” LB6 (exc. “W” body)		1227730	1227730	1227730
2.8 V6 PFI “W” LB6 (“W” body)		1227727	1227727
3.1 V6 PFI “T” LH0 (exc. “W” body)		1227730	1227730	1227730	1227730	1227730	1227730
3.1 V6 PFI “T” LH0 (“F” body)		16196404	16196404	16196404
3.1 V6 PFI “T” LH0 (“W” body)		1227727	1227727	1227727	1227727	1227727 16149396
3.1 V6 SFI “T” L82		16184164
3.1 V6 SFI “M” L82		16196387	16196387
3.1 V6 PFI turbo “V” LG5		1227727	1227727
	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995
3.3 V6 PFI “N” LG7		1228706	1228706	1228706	1228706	1228706
3.4 DOHC V6 PFI “X” LQ1		16149396	16149396	16149396
3.4 DOHC V6 SFI “X” LQ1		16196401	16196401
3.8 V6 SFI “C” LN3		1228253	1228253	1228253	1228253
3.8 V6 SFI “L” L27 (exc. “W” body)		16141470	16141470	16141470	16183247	16183247
3.8 V6 SFI “L” L27 (“W” body)		16132792	16132792	16132792
3.8 V6 SFI “K” L36		16183247
3.8 V6 SFI supercharged “1” L67		16141470	16141470	16141470	16183247	16183247
5.0 V8 TPI “F” LB9	1227165	1227165	1227165	1227165	1227730	1227730	1227730
	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995
5.7 V8 TPI “8” L98 (“F” body)		1227165	1227165	1227165	1227730	1227730	1227730
5.7 V8 TPI “8” L98 (“Y” body)	1227165	1227165	1227165	1227165	1227727	1227727
5.7 V8 TPI “P” LT1		16159278	16159278
5.7 DOHC V8 SFI “J” LT5		1228331	1228331	16163993	16163993	16163993	16163993

Truck ECM selection by model year and engine type:

1987 1988 1989 1990 1991 1992 1993 1994 1995

2.2 L4 PFI “4” LN2 16199982

2.5 L4 TBI “E” LN8 1227165 1227165 1227165 1227165 1227165

2.5 L4 TBI “A” L38 1227165 16156647 16156647

3.8 V6 SFI “L” L27 16141470 16141470 16183247 16183247

4.3 V6 TBI “Z” LB4

4.3 V6 CPI “W” L35 16156647 16156647

4.3 V6 PFI turbo “Z” LB4 1227749 1227749 1227749

5.0 V8 TBI “H” L03

5.7 V8 TBI “K” L05

1987 1988 1989 1990 1991 1992 1993 1994 1995

7.4 V8 TBI “N” L19

	1987	1988	1989	1990	1991	1992	1993	1994	1995
2.2 L4 PFI “4” LN2		16199982
2.5 L4 TBI “E” LN8	1227165	1227165	1227165	1227165	1227165
2.5 L4 TBI “A” L38		1227165	16156647	16156647
3.8 V6 SFI “L” L27		16141470	16141470	16183247	16183247
4.3 V6 TBI “Z” LB4
4.3 V6 CPI “W” L35		16156647		16156647
4.3 V6 PFI turbo “Z” LB4		1227749	1227749	1227749
5.0 V8 TBI “H” L03
5.7 V8 TBI “K” L05
	1987	1988	1989	1990	1991	1992	1993	1994	1995
7.4 V8 TBI “N” L19

1227165
16198259

Schematic

Application:	1986 2.0 L4 TBI “P” LQ5 w/ MT 1986-89 5.0 V8 TPI “F” LB9 1986-89 5.7 V8 TPI “8” L98 1987-91 truck 2.5 L4 TBI “E” LN8 1991 truck 2.5 L4 TBI “A” L38
MEMCAL IDs:	“P”: CRY, CRZ, … “F”: AUM, ACXT, AKFM, AKFR, … “8”: BUA, AANK, AANL, APYP, APYU, AUJM, … “E”: ADHF, AMJW, ASWY, AXAA, … “A”: AUXH, …
EPROM type:	27C128

1227277

Schematic

Description:	1227808 w/o O2 input
Application:	Australian L4 TBI
EPROM type:	27C128

1227303

Schematic

Description:	1227752 w/ one missing quad driver
Application:	1988-93 1.6 OHC L4 TBI “6” L73 (LeMans) 1988-90 2.0 OHC L4 TBI “K” LT2 (LeMans)
MEMCAL IDs:	“6”: ACXP, ACXR, AXCF, ASFM, … “K”: ANAB, …
EPROM type:	27C128

1227727
16197128
16198260

Schematic

More info

Description:	1227730 in underhood case
Application:	1990-92 2.5 L4 TBI “R” LR8 (“W” body) 1988-89 2.8 V6 PFI “W” LB6 (“W” body) 1989-93 3.1 V6 PFI “T” LH0 (“W” body) 1989-90 3.1 V6 PFI turbo “V” LG5 1990-91 5.7 V8 TPI “8” L98 (“Y” body)
MEMCAL IDs:	“R”: APTW, … “W”: AMAS, APWM, ATRA, … “T”: ARCX, ARZW, ATSN, ATSP, AUMY, … “V”: ASAN, ASMF, ATMJ, ATMK, AUAD, AUAF, AUFR, AZRC “8”: ANHT, ARFP, …
EPROM type:	27C128 or 27C256

1227730
16196344
16198262

Schematic

More info

Application:	1987 2.0 L4 TBI “1” LL8 1988 2.0 L4 TBI “1” LL8 (early) 1987-89 2.8 V6 PFI “W” LB6 (exc. “W” body) 1988-94 3.1 V6 PFI “T” LH0 (exc. “W” body) 1990-92 5.0 V8 TPI “F” LB9 1990-92 5.7 V8 TPI “8” L98 (“F” body)
MEMCAL IDs:	“1”: FML, AAST, ADDT, ADDU, … “W”: AAWW, AAXM, ADBT, ADBU, ADCM, ADDB, ADPK, ADPL, ADPP, ADRJ, ADRR, ADRU, ADRX, ADRY, ADRZ, ADSB, ALZN, ALZT, AMAP, ANKK, ANWA, APWD, ARBX, ARCN, ARDC, ARXU, ARYH, ASMJ, ASMK, ASMW, ASMX, ASNA, ASNB, ASWD, ATZD, ATZF, … “T”: ARUT, AUAR, AZTY, … “F”: … “8”: AUJP, …
EPROM type:	27C128 or 27C256

1227748

Schematic

Description:	Two edge card connectors, uses EPROM instead of MEMCAL
Application:	1987-91 2.0 OHC L4 TBI “K” LT2 1990-91 2.2 L4 TBI “G” LM3 1987-92 2.5 L4 TBI “R” LR8 (exc. “W” body) 1987-91 2.5 L4 TBI “U” L68
MEMPAK IDs:	“K”: ABLT, ACXK, ALWK, ATWA, … “G”: ATLA, ATXC, ATXD, AUJU, … “R”: ABKB, ACMA, ACMB, ACMF, ACMH, ADSJ, ADSK, ALWM, ANAM, ATBS, ATBM, … “U”: ABKH, ACMC, ANML, ASLA, ATBU, …
EPROM type:	27C128

1227749
16198263

More info

Schematic

Description:	1227730 w/ one missing quad driver, w/ additional injector driver FET
Application:	1987-90 2.0 OHC L4 PFI turbo “M” LT3 1987-88 2.3 DOHC L4 PFI “D” LD2 1991-93 truck 4.3 V6 PFI turbo “Z” LB4
MEMCAL IDs:	“M”: AFDZ, ALBK, AMUW, AUWS, … “D”: AMDB, AMDD, AMDF, ARPZ, … “Z”: AWXJ, AXXA, AYBM, AYBN, BBZA, BBZB, DOAC
EPROM type:	27C128 or 27C256

1227752

Schematic

Description:	1227165 in short case
Application:	1987 1.5 L4 PFI turbo “9” (Isuzu) 1988-89 1.5 L4 PFI turbo “9” (Isuzu) 1989 1.6 DOHC L4 PFI “5” (Isuzu)
MEMCAL IDs:	“9”: ARB… “5”: …
EPROM type:	27C128

1227808

Schematic

Description:	1227165 w/o 8192 baud ALDL
Application:	Australian
MEMCAL IDs:	ASBX, …
EPROM type:	27C128

1228253
16198264

More info

Schematic

Description:	Six cylinder sequential injection
Application:	1988-91 3.8 V6 SFI “C” LN3
MEMCAL IDs:	AJRZ, AJSA, ANBF, ATXY, …
EPROM type:	27C256

1228321

Schematic

Description:	Two edge card connectors, uses EPROM instead of MEMCAL
Application:	1988 2.0 L4 TBI “1” LL8 (late) 1989 2.0 L4 TBI “1” LL8
MEMPAK IDs:	ABKL, AKZA, ARRM, ARRN, ARRP, …
EPROM type:	27C128

1228331

Application:	1990-91 5.7 DOHC V8 SFI “J” LT5 1991 Vauxhall Lotus Carlton 3.6 Twin Turbo
MEMCAL IDs:	“J”: ANHX, AUAH, ARZR, AXFK, AYBK, BFXB Lotus: AXSH, …
EPROM type:	27C256

1228706
16198266

Schematic

Application:	1989-93 3.3 V6 PFI “N” LG7
MEMCAL IDs:	ALCA, ANWM, ANWN, ANWR, ASJU, ASJX, AXUP, …
EPROM type:	27C256

1228707
16198267

Application:	1989-91 2.3 DOHC L4 PFI “D” LD2 (exc. “W” body) 1989-91 2.3 DOHC L4 PFI “A” LG0 (exc. “W” body)
MEMCAL IDs:	“D”: ANMP, ANZF, ARHM, ASDD, ASDF, … “A”: …
EPROM type:	27C256

1228708

Application:	1990-91 2.3 DOHC L4 PFI “D” LD2 (“W” body) 1990 2.3 DOHC L4 PFI “A” LG0 (“W” body)
MEMCAL IDs:	“D”: ANLP, … “A”: …
EPROM type:	27C256

16132792

Application:	1990-92 3.8 V6 SFI “L” L27 (“W” body)
MEMCAL IDs:	AZKT, …
EPROM type:	27C256

16134847

Application:	1992-93 2.2 L4 PFI “4” LN2
CAL IDs:	BAYK, …
ROM type:	EEPROM

16141470

Application:	1991-93 3.8 V6 SFI “L” L27 (exc. “W” body) 1991-93 3.8 V6 SFI supercharged “1” L67 1992-93 truck 3.8 V6 SFI “L” L27
MEMCAL IDs:	“L”: … “1”: …
EPROM type:	????

16146299

Description:	ECM
Application:	Australian
EPROM type:

16147060

Application:	1991-93 truck 5.7 V8 TBI “K” L05
MEMCAL IDs:	“K”: BAJP, … …
EPROM type:	27C256

16149396

Schematic

Description:	1227727 w/ additional SRAM
Application:	1993-94 3.1 V6 PFI “T” LH0 (“W” body) 1991-93 3.4 DOHC V6 PFI “X” LQ1
MEMCAL IDs:	“T”: BDJS, … “X”: AYSZ, BBUK, BCDT, BCFA, …
EPROM type:	27C256

16153597

Description:	Dual injector driver FETs, uses 1227752 case
Application:	1990 1.6 SOHC L4 PFI “6” (Geo & Isuzu) 1991 1.6 SOHC L4 PFI “6” (Geo & Isuzu) 1992-93 1.6 SOHC L4 PFI “6” (Geo & Isuzu) 1990-92 1.6 DOHC L4 PFI “5” (Geo & Isuzu) 1992-93 1.8 DOHC L4 PFI “8” (Geo & Isuzu) 1991-92 1.6 DOHC L4 PFI turbo “4” (Isuzu) …
CAL IDs:	“6”: AUUC, …
ROM type:	EEPROM

16156647

Application:	1992-93 truck 2.5 L4 TBI “A” L38 1992 truck 4.3 V6 CPI “W” L35 1994 truck 4.3 V6 CPI “W” L35 w/ MT
MEMCAL IDs:	“A”: … “W”: BAWP, BCBH, …
EPROM type:	27C256

16139060
16159278

Application:	1993 5.7 V8 TPI “P” LT1 (“F” body) 1992-93 5.7 V8 TPI “P” LT1 (“Y” body)
MEMCAL IDs:	BAFL, BDBK, BDZP, …
EPROM type:	27C256

16159282

Application:	1992-93 2.0 OHC L4 PFI “H” LE4 1994 2.0 OHC L4 PFI “H” LE4 w/ MT
MEMPAK IDs:	…
EPROM type:	…

16163993
16196394

Application:	1992-95 5.7 DOHC V8 SFI “J” LT5
MEMCAL IDs:	AYWT, …
EPROM type:	27C256

16168625

Application:	1993-94 truck 5.7 V8 TBI “K” w/ 4L60E …
MEMCAL IDs:	BHMX, …
EPROM type:

16176424

Description:	Two plugs, case like 1227165, PCM
Application:	1993+ Australian V6 w/AT (Holden Commodore VR) 1993+ Australian V8 w/AT (Holden Commodore VR & VS)
MEMCAL IDs:	BFFK, BFPL, BKCZ, BLCC, BMZA, BMZC, …
EPROM type:	27C512

16183082

Description:	1227808 w/ 8192 baud ALDL
Application:	1993+ Australian V6 w/MT (Holden Commodore VR) 1993+ Australian V8 w/MT (Holden Commodore VR & VS)
MEMCAL IDs:	BJKS, BLCD, BLCF, BLJX, BMZL, …
EPROM type:	27C256

16183247

Application:	1994-95 3.8 V6 SFI “L” L27 1995 3.8 V6 SFI “K” L36 1994-95 3.8 V6 SFI supercharged “1” L67 1994-95 truck 3.8 V6 SFI “L” L27
MEMCAL IDs:	“L”: BMYU, … “1”: … “K”: …
EPROM type:	27C512

16186695

Application:	1993 truck 5.7
EPROM type:

16191947

Application:	1994-95 2.2 L4 PFI “4” LN2 1994 2.3 DOHC L4 PFI “A” LG0 1994 2.3 DOHC L4 PFI “3” L40 1995 2.3 DOHC L4 PFI “D” LD2
MEMCAL IDs:	“4”: BJCA, … “A”: … “3”: … “D”: …
EPROM type:	27C512

16195699

Description:	16176424 w/ RFI screened plugs
Application:	1993+ Australian V6 w/AT (Holden Commodore VR) 1993+ Australian V8 w/AT (Holden Commodore VR & VS)
MEMCAL IDs:	BKDA, BWCS, BWFU, …
EPROM type:	27C512

16196393

Application:	1994 2.0 OHC L4 PFI “H” LE4 w/ AT
MEMPAK IDs:	BJCF
EPROM type:	…

16196395

Application:	1994 truck 4.3 V8 CPI “?” L35 1994 truck 5.7 V8 TBI “?” L05 1994 truck 7.4 V8 TBI “?” L19
MEMCAL IDs:	BHDF, BHRJ, BJDR, …
EPROM type:	27C512

16196401
16173300

Application:	1994-95 3.4 DOHC V6 PFI “X” LQ1
MEMCAL IDs:	BCFD, BFRS, BHZW, BHLJ, BKLK, BKLL, BPCJ, BPCK, BSBH
EPROM type:	27C256

16196404

Application:	1990-92 3.1 V6 PFI “T” LH0
MEMCAL IDs:	BMCD
EPROM type:	????

16197427

Application:	1995 truck 5.7 V8 TBI “K” L05
MEMCAL IDs:	BJYA, BJYM, …
EPROM type:	27C512

16199728
16210672

Description:	Three plugs, no resistor packs, PCM
Application:	1995+ Australian V6 w/AT (Holden Commodore VS)
MEMPAK IDs:	BRHP, BSTK, BWPJ, …
EPROM type:	27C010

16199982

Application:	1994 truck 2.2 L4 PFI “4” LN2 …
EPROM type:

16206305

Description:	Like 16183082
Application:	Australian
EPROM type:

16208252

Description:	Like 16176424
Application:	1993+ Australian LP-Gas V6 (Holden Commodore VR)
MEMCAL IDs:	BLYN, …
EPROM type:	27C512

16208257

Description:	16199728 w/ RFI screened plugs
Application:	1995+ Australian V6 w/AT (Holden Commodore VS)
MEMPAK IDs:	BSTH, …
EPROM type:	27C010

16234531

Description:	PCM
Application:	Australian
EPROM type:

122716516198259

1227277

1227303

12277271619712816198260

12277301619634416198262

1227748

122774916198263

1227752

1227808

122825316198264

1228321

1228331

122870616198266

122870716198267

1228708

16132792

16134847

16141470

16146299

16147060

16149396

16153597

16156647

1613906016159278

16159282

1616399316196394

16168625

16176424

16183082

16183247

16186695

16191947

16195699

16196393

16196395

1619640116173300

16196404

16197427

1619972816210672

16199982

16206305

16208252

16208257

16234531

1227165
16198259

1227727
16197128
16198260

1227730
16196344
16198262

1227749
16198263

1228253
16198264

1228706
16198266

1228707
16198267

16139060
16159278

16163993
16196394

16196401
16173300

16199728
16210672