Re: ECM (computer)
- Ayup... My '77 Seville went a meager 300k+ miles on its original EFI
The ECM on the Sevilles is located under the dash in the center, below
the radio, directly above the trans hump, and has a black cover over
it. Not sure about the C & E bodies, though... Also, there were
specific ECM's for each model, and further specific units for Cali vs
49-state vehicles besides tweaks from year to year. I suspect the
latter two items, however, were more related to emissions tuning and
tweaking, whereas the model-specific changes were for the different
engine displacements, i.e. 350 (Seville) vs 500 / 425 / 368 (C & E
bodies.) I'd recommend trying to use the correct ECM for your vehicle
if at all possible.
Tip: Skip the Haynes and Chilton manuals and get the factory service
manuals. They'll tell you all you need to know and then some. There is
also a specific EFI supplement that is quite useful for diagnosing
--- In Big_Eldorado@yahoogroups.com, "davidinhartford@j..."
>Eldorados and was used up thru the 78s. It was Standard equipment on
> The optional Cadillac Fuel Injection system came out in 1975 for the
the 75-79 SeVilles too.
- The ECU (computer) is located under the lower dash just above the
glovebox in the Eldos. I installed my alarm sitting on top of it in my
- Don't tell me my dream car has a cursed computer! I have an early '76 convert with carb. Does it have one? Also, need source for heater core. thanks
"Laissez les bons, temps roulette" James Baker
Got holiday prints? See all the ways to get quality prints in your hands ASAP.
- NO!!! You are safe. If it had fuel injection you would
be in the same boat as the early Seville folks.
--- James Baker <frigidfrosty@...> wrote:
> Don't tell me my dream car has a cursed computer! I
> have an early '76 convert with carb. Does it have
> one? Also, need source for heater core. thanks
> "Laissez les bons, temps roulette" James Baker
> Yahoo! Photos
> Got holiday prints? See all the ways to get quality
> prints in your hands ASAP.