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08-04-2005, 07:06 PM

Blower91

CF Senior Member

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Member Since: Aug 2004

Ccm_hac?

How much is known about the internals of the CCM? The only thing I found was the A111 datastream (in case of the 90-91 Vette).

Apparently two messages are sent from the CCM upon request. However, only one of them is specified in the datastream. Why? Anyone out there having some information about the other message? I would guess this message contains VIN, odo etc.

What about the HW then? It seems the ECM's HW is well known but I just don't find anything on the CCM's HW.

What is known about the code? Anyone seen a "CCM_HAC"?

08-04-2005, 07:06 PM

		Corvette Forum > C4 Corvettes, 1984 - 1996 > C4 Scan & Tune
Ccm_hac?

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