GM's move to CalPaks

[Ludis Langens]

timsiford at hushmail.com wrote:
> 
> What year did GM start using the CalPaks instead of just the EPROM?  Was
> it in 1986 with the introduction of the 165ECM?

In the beginning, ECMs used just a MEMPAK (aka just a PROM).  By 1984,
less common models used a MEMPAK along with a CALPAK (aka netres).  In
1986, the '165 introduced a MEMPAK and CALPAK in one unit called the
MEMCAL.  Older generation ECMs with seperate MEMPAKs and CALPAKs
continued to be used until 1995.  OBD II finally killed off that
generation of ECM.  (Actually, they might have been used even later but
only on big "heavy" trucks.)

> Do all 165ECMs use a CalPak?

No, they all use a MEMCAL.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/


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