Little black box on top of ECM

[enkeivette]

What is that little black box on top of the ECM? Do I need it to run the engine?

 

[Twin_Turbo]

That's the ESC box, it's for knock retard. The thick shielded cabe goes to the knock sensor, the bare outside to the bare wire is the shield.

 

[enkeivette]

Found a lead on a partial 84 harness... this might be happening soon.

 

[mrvette]

I not seen that type of 'edge card connectors for some years...

looks like the old Caddy systems on the Seville and some few Sedan DeVilles from 76-79 ......

never knew they carried over to actual GM production....or was that actually GM???

 

[Twin_Turbo]

stock gm all the way brotha

 

[Bullshark]

stock gm all the way brotha

:suicide:....:harhar: