The most popular computer in the car is the ECM (Engine Control & Management).  Also called CCC (Computer Command Control) in the early 80's, and PCM (Powertrain Control Module), in the early 90's.  Below is a chart of service#'s and ECMs, along with our current pricing.  Pricing is for a used ECM.  Some ECMs can easily be identified from their connectors.

81-02 ECM Service Numbers

	GM Service#	8th VIN Char	Year	FI	Description
	1224770	T	81	Carb	4.9L-V8 Turbo Engine Management
	01224744	T	81	Carb	4.9L-V8 Turbo ESC Controller
	01224770	W	81	Carb	4.9L-V8 Engine Management
	01224810	H	81	Carb	5.0L-V8 Engine Management
	01224810		81	Carb	5.7L-V8 Engine Management
	01225570 01225610	2	82	TBI	2.5L-4 Cyl Engine Management
	01225500 01225950	1	82	Carb	2.8L-V6 Engine Management
	01225500 01225950	H	82	Carb	5.0L-V8 Engine Management
	01225550	7	82	CFI	5.0L-V8 Engine Management
	01226100	2	83	TBI	2.5L-4 Cyl Engine Management
	01226025	1	83	Carb	2.8L-V6 Engine Management
	01226025	H	83	Carb	5.0L-V8 Engine Management
	01225550	7	83	CFI	5.0L-V8 Engine Management
	01226156	2	84	TBI	2.5L-4 Cyl Engine Management
	01226455	1	84	Carb	2.8L-V6 Engine Management
	01226455	H	84	Carb	5.0L-V8 Engine Management
	01226455	G	84	Carb	5.0L-V8 HO Engine Management
	01226864	2	85	TBI	2.5L-4 Cyl Engine Management
	01226870	S	85	MPI	2.8L-V6 Engine Management
	01226865	H	85	Carb	5.0L-V8 Engine Management
	01226865	G	85	Carb	5.0L-V8 HO Engine Management
	01226870	F	85	TPI	5.0L-V8 Engine Management
	01226864	2	86	TBI	2.5L-4 Cyl Engine Management
	01227302	S	86	MPI	2.8L-V6 Engine Management
	01226865	H	86	Carb	5.0L-V8 Engine Management
	01226865	G	86	Carb	5.0L-V8 HO Engine Management
	01227165	F	86	TPI	5.0L-V8 Engine Management
	01227165	8	86	TPI	5.7L-V8 Engine Management
	01227302	S	87	MPI	2.8L-V6 Engine Management
	01226865	H	87	Carb	5.0L-V8 Engine Management
	01227165	F	87	TPI	5.0L-V8 Engine Management
	01227165	8	87	TPI	5.7L-V8 Engine Management
	01227302	S	88	MPI	2.8L-V6 Engine Management
	01228063	E	88	TBI	5.0L-V8 Engine Management
	01227165	F	88	TPI	5.0L-V8 Engine Management
	01227165	8	88	TPI	5.7L-V8 Engine Management
	01227302	S	89	MPI	2.8L-V6 Engine Management
	01228746	E	89	TBI	5.0L-V8 Engine Management
	01227148	7	89	SFI	3.8L-V6 Turbo Engine Management
	01227165	F	89	TPI	5.0L-V8 Engine Management
	01227165	8	89	TPI	5.7L-V8 Engine Management
	01227730	T	90	MPI	3.1L-V6 Engine Management
	01228746	E	90	TBI	5.0L-V8 Engine Management
	01227730	F	90	TPI	5.0L-V8 Engine Management
	01227730	8	90	TPI	5.7L-V8 Engine Management
	01227730	T	91	MPI	3.1L-V6 Engine Management
	01228746	E	91	TBI	5.0L-V8 Engine Management
	01227730	F	91	TPI	5.0L-V8 Engine Management
	01227730	8	91	TPI	5.7L-V8 Engine Management
	01227730	T	92	MPI	3.1L-V6 Engine Management
	01228746	E	92	TBI	5.0L-V8 Engine Management
	01227730	F	92	TPI	5.0L-V8 Engine Management
	01227730	8	92	TPI	5.7L-V8 Engine Management
	16172693		93	SFI	3.4L-V6 Engine Management
			93	SFI	5.7L-V8 Engine Management
	16184737 16203281		94	SFI	3.4L-V6 Engine Management
	16188051		94	SFI	5.7L-V8 Engine & Powertrain Management
	16184737 16203281		95	SFI	3.4L-V6 Engine Management
			95	SFI	3.8L-V6 Engine and Powertrain Management
	16188051		95	SFI	5.7L-V8 Engine & Powertrain Management
	16207326		96	SFI	3.8L-V6 Engine and Powertrain Management
	16214399		96	SFI	5.7L-V8 Engine & Powertrain Management
	16227797		97	SFI	3.8L-V6 Engine and Powertrain Management
	16242921		97	SFI	5.7L-V8 Engine & Powertrain Management
	16236757		98	SFI	3.8L-V6 Engine and Powertrain Management
			98	SFI	5.7L-V8 Engine & Powertrain Management
			99	SFI	3.8L-V6 Engine and Powertrain Management
			99	SFI	5.7L-V8 Engine & Powertrain Management
			00	SFI	3.8L-V6 Engine and Powertrain Management
	16220610		00	SFI	5.7L-V8 Engine & Powertrain Management
			01	SFI	3.8L-V6 Engine and Powertrain Management
			01	SFI	5.7L-V8 Engine & Powertrain Management
			02	SFI	3.8L-V6 Engine and Powertrain Management
			02	SFI	5.7L-V8 Engine & Powertrain Management

Note - Compatibility is listed for F-body cars only.  Some computers will work with other vehicles.

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