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CCM Code issues

   
Old Apr 11, 2011 | 08:11 PM
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pmcclung
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Default CCM Code issues
I have a 1991 that the SYS light is flashing. I have troubleshot it using the paper clip to the "A"-"G" pins and am getting Module 1 CCM codes H72 and H74. Can anyone tell me what these codes are and sugested fixes.

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Old Apr 12, 2011 | 04:37 AM
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Originally Posted by pmcclung
am getting Module 1 CCM codes H72 and H74.
what these codes are .
Installed a non stock stereo?
Download and save this for future reference

http://www.corvette-guru.com/uploads...CMCodePull.pdf

Originally Posted by pmcclung
Can anyone tell me sugested fixes.
http://www.corvetteforum.net/c4/dave8476/index4.shtml
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Old Apr 12, 2011 | 07:18 AM
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Yes installed a non stock stereo about a year and a half ago. No problem untilk this week.
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