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How to removed and install The ECM

Your better off taking it to the dealer , after replacing it needs to be programmed or it will not run . Information from the old has to be up loaded to GM Tech 2 scan tool to load on new one ! Then you would need to pay for a subscription to GM'S service programming system to get software to program new ECM .
Program the ECM. Refer to Service Programming System (SPS) in Programming. If you encounter an ECM programming error, with a display message of "Starting Disabled, Remove Key" on the driver information center, with a diagnostic test code (DTC) of P1631, perform the "10-Minute Relearn Procedure" found in Programming Theft Deterrent System Components. Refer to Programming Theft Deterrent System Components . Additional information can be found in service bulletin number 05524 A. Turn OFF the ignition for at least 5 seconds after the programming event is complete. Perform the idle learn procedure. Refer to Idle Learn . Use the scan tool to clear all DTCs.
Of if you a few grand you could buy a J2534 programming tool an
J2534 Reprogramming Tool

May 06, 2015 | 2004 Cadillac CTS

1 Answer

Why dose car not start

code p1362 refers to camshaft position sensor (CMP) ---no signal==causes wiring--CMP sensor--ECM programming--ECM
First point -cheap sensors are a waste of time and money as they have to be made with a pre-set range suitable to the ECM in your car. next point --when fitting cam/crank position sensors you have to ensure the correct air gap is maintained . third point ---because it is not set to your CPU program then it is advisable to use a scanner tool to reprogram the CPU to read the sensors fitted. I would advise a change of mechanic as it appears that the advice you are getting is not exactly accurate.

Jul 15, 2014 | 1991 Honda Civic

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If i swap a engine on a 2003 honda accord, would i have to reprogram the ecm

hi not on changing the mechanical part the ecm and transponders already match as long as u dont have to change ecm no program is required ex if u have a four cyl and u installed a 6 cyl u need new ecm that wont match including the wiring and ecm that would have to be programed to match bcm body computer module danny

Mar 30, 2014 | 2003 Honda Accord 2.4 LX

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Chevy ecm

You have to have the new ECM programmed after its installed in the vehicle.

Dec 03, 2013 | 2006 Chevrolet Cobalt

1 Answer

Where can I get a ECM for a 1990 Mitsubishi Eclipse bench tested??

Check the crank sensor before you send the ECM in. ECM does not fail that often.

Jul 22, 2012 | 1996 Mitsubishi Eclipse

1 Answer

Mazda MPV 2.6 1989 good ecm, good injectors (but no voltage), good spark, good fuel pressure, engine cranking, but won't start. If I put a little bit of gas on the air intake it will start. there's no...

You probably have a bad ecm. These engines used the same ecm that the injected b2200 used and they had a lot of problems with capacitors that leaked and damaged the etching on the ecm's circuit board. If you do indeed have 12V on one side of the injectors and no pulsing ground from the ecm, then the problem either in the ecm or the wiring between the ecm and the injectors. When you say good ecm, have you tried a known good one?
If you're really good at desoldering and repairing pc boards, you can fix it yourself, all you'll need is a 47uF capacitor. Or you can send it out.

Jan 11, 2011 | 1989 Mazda MPV

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I have an 03 chevy blazer 4 dr. 4x4 sport. It won't start. I checked fuel rail for fuel. I got gas there. I checked for spark. Got that too. I bought a new battery. I THINK it might be the PassLock II...

replacing the barrel or keys will jot solve the problem as you will still have to get them programmed to the immobilizer system
there is a method of bypassing the immobilizer to get it to a service center
I suspect that the problem is in the keys ( flat batteries in the key fob )or the immobilizer needs to be programmed to the keys again
possible a reset of the ECM using a scan tool may help there

Mar 14, 2017 | Chevrolet Blazer Cars & Trucks

1 Answer

If I change the ecm, does it need to be programmed? I'm purchasing a new one from a local parts store and have never done one.

Late 95 into 96 is when the changed from an ecm that had a replaceable (prom) to one that was made into the computer that would have to be programmed.Check you original ecm for a plate covering a removeable prom if it has one swap it into the new one and your good to go If not you will need to get the new one programmed

Sep 08, 2010 | 1995 Buick Park Avenue

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Two wires go from distributor (350 chevy) to HEI module, 1 is green the other white witch 1 hooks to ''N'' & witch 1 hooks to ''P'' on module?

the heaver guage wire will be a power lead, the other if cheched while crancking will be a ecm pulsation for coil

Feb 10, 2010 | 2000 Chevrolet 3500

1 Answer

No spark,new module,coil,plugs

did you try the cranck sensor and if you have access to a noid light test for injector pulse if none suspect faulty cranck sensor

Aug 14, 2009 | Lincoln Mark VI Cars & Trucks

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