Hi I'm looking for the right part # for the prom chip for a 93 trans am ECM having a hard time with the local dealership getting the right one any info helps oh and it's a lt1
Cause the previous owner put In a hypertech one and no longer have the oem and having distributor problems and can't read the codes that the ECM has in it
This. Now I don't see any way that the PROM chip would interfere with reading codes. With a 93 a code will have to be read by flashing it out with the SES light, unless you have a tech1 GM scan tool. If you are having an issue with the opti replace it.
Ok well have the chip on order hope it's the right one crossing fingers takes two weeks to get in. And I had called the hypertech company and they told me that where not readable but I don't think that the guy I talked to knew what he was talking about but here's my problem- ECM has a code but when I try to read it with my "reader" for the lack of a better term says "can't communicate" and so I don't know for sure if it's the distributor or not
Look online how to do it and it will tell you what the flashes mean.
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