1993 Corvette Electrical issue

by Neil
(Arlington, Texas)

we have a 1993 Corvette that we have owned since 2000. A month or so back, it suddenly quit running - while my wife was driving it. I thought it was the opti-spark (so did lots of Corvette friends) ...so I bought a new one and replaced it - still won't start. Next, I replaced the Coil & ICM - still won't start. Tried a 2nd new opti-spark - still won't start.

So, purchased a rebuilt ECM (since you can't buy new ones)...it smoked when I plugged the battery cable back up. The blower fan in the front lower-compartment started running too - which is odd; the minute the battery is connected. If you unplug it, the ECM doesn't have any smoke coming out of it.

It appears that we have some kind of wiring short and I'm at a loss of where to search for it. I have removed the front inner fenders to search for a shorted wire but as of yet, nothing has been found.

Bought a scanner and it tells me ECM no response, obviously fried again.

Chris Trautman @ Corvette Assembly Plant 2019

About Us: Corvette Web Central | Owner Bio: Chris Trautman

Established in 2008 by Chris Trautman, Corvette Web Central quickly grew into one of the top leading Corvette enthusiast websites globally. 

"This website is a passion of mine, just as much as being a Corvette owner," says Chris.  He was frustrated trying to find information on the internet about Corvettes which was was not biased or influenced somehow. 

He has owned three Corvettes over the last twenty years and does not plan to stop owning one anytime soon.

Note: Some links on this page are part of our affiliate program and provide a small portion of proceeds to fund the administrative costs and to fund more product reviews.  We are not paid to perform the reviews or are we given any products for free.