Types of GM ECMs

[Jennifer Rose]

At 12:10 AM 2/23/98 PST, you wrote:
>As far as series types of ecm for GM;
>As I understand it there are C3, P4, and PCMs.  Is this true?
>
>All the C3 types use a 2732 style prom, and 2 connectors.
>
>All the P4 use a memcal/calpak, use 27128/27256 proms, 
>and 3 connectors.
>
>What do the PCMs use?.
>
>Are there other GM EFI series?.  Is the prom holder/memcal.
>connector an accurate way of id ing them?..
>Bruce    Beginning to wear two cone shaped hats, one
>             inside the other.  Now have 4 layers of AL foil to 
>             block alein tranmissions...
>
>Hi Bruce	
	
	Think 165 ecm is a p4, but has two connectors.

Vance