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I have a 99 Sable with no pulse to the injectors, and at first, no ignition pulse from the coils. I found a burnt diode going to the PCM, which I replaced(the diode first). That solved the ignition problem but still no injector pulse. I ordered a reman PCM only to find out it is programmed to the vehicle specs but needed to do a relearn on the keys, which of course I can't do. No starter with the reman PCM, but did with the old one. My thought is the old PCM is probably good and something else is causing the injector pulse failure. Any suggestions?
 
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