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Old May 24, 2011 | 05:45 PM
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I have replaced a defective CCM on my 1995 with a good used unit, I donot have a digital readout. programming?
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Old May 24, 2011 | 06:53 PM
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Originally Posted by illenema
I have replaced a defective CCM on my 1995 with a good used unit, I donot have a digital readout. programming?
#1: Is the replacement CCM from a 95?

P.
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Old May 24, 2011 | 07:07 PM
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Originally Posted by Paul Workman
#1: Is the replacement CCM from a 95?

P.
Yes, 1995 known good unit. Have cranking, all other indicators are functional
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Old May 25, 2011 | 06:08 AM
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Once a CCM has accumulated 100 miles there are no parameters that can be programmed in the field. See this link for a vendor that can repair yours, good luck.

http://gmautocomputers.com/
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Old May 25, 2011 | 10:34 AM
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Originally Posted by toptechx6
Once a CCM has accumulated 100 miles there are no parameters that can be programmed in the field. See this link for a vendor that can repair yours, good luck.

http://gmautocomputers.com/
Yes I know, but the mileage and digital readout is not, but lit.
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Old May 25, 2011 | 10:59 AM
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Originally Posted by illenema
Yes I know, but the mileage and digital readout is not, but lit.
????? but lit ????? Are you sure you didn't pop a fuse when you had the dash apart? I would check ALL fuses with a test light to verify, not just those marked instrument panel. Visual inspection of fuses will often miss a bad one, good luck.

Last edited by toptechx6; May 25, 2011 at 11:22 AM.
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Old May 25, 2011 | 12:09 PM
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Originally Posted by toptechx6
????? but lit ????? Are you sure you didn't pop a fuse when you had the dash apart? I would check ALL fuses with a test light to verify, not just those marked instrument panel. Visual inspection of fuses will often miss a bad one, good luck.
I have the dash removed. I am hoping corroded contacts. I have down to the individual wires supplying logic supply to the lcd.. Good luck
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Old Jun 11, 2011 | 08:54 PM
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Turned out to be corroded contacts on ccm connector. Deoxit nailed it.
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