Hi all,

After several months of trying and lots of head scratching I am still not able to locate the problem of my speedo LCD on my !990. Itscrambles after about an hour of running. I replaced the ECM, checked out the speedo processor board, and are currently checking wireing. The shop manual and codes point towards either a ground short or a CCM failure. I have been looking for a source to buy a CCM but, have not found one. All normal parts houses I've checked don't carry one. Any suggestions on where I can get one or thoughts on my problem?[sm=headbang.gif]

 

I have a wiring diagram that I got through www.ecklers.com ,you can get them for your year of Vette.
If it is a ground prob, the diagrams will help you find them, and you can make sure they are secure.

Ya might try these, for your CCM.....
www.ecklers.com
www.summitracing.com
www.zipcorvettes.com
www.midamericamotorworks.com

Hope this helps.