ECM questions - ZR-1 Net Registry Forums

tomtom72 · 09-04-2005

Hi guys, Please forgive the elementary Q's but I truly have no experience to draw on.
I have a 90 ZR-1 & I think there is a possibility the ECM may need to be replaced.
Is the "chip" called a PROM, that thing on the underside of the ECM?
Dose that come with a new ECM or is it bought separetly?

I tried "drilling" down at some GM parts sites & tried to find a part listing for a PROM but I couldn't.

Thanks for any help,
Tom

09-04-2005	#1
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,609	ECM questions Hi guys, Please forgive the elementary Q's but I truly have no experience to draw on. I have a 90 ZR-1 & I think there is a possibility the ECM may need to be replaced. Is the "chip" called a PROM, that thing on the underside of the ECM? Dose that come with a new ECM or is it bought separetly? I tried "drilling" down at some GM parts sites & tried to find a part listing for a PROM but I couldn't. Thanks for any help, Tom