ECM replacement

[JCBATCH]

I have a 1989 Trooper with the V6 engine “LL2” and 5 speed transmission “M75”, but it does not have the ECM. My question is, will an ECM from a 1991 Trooper with V6 engine “LL2” and automatic transmission “RQM” work as a replacement?

[geeves]

Is that the 3.1 v6? That is a chevy engine so you might have more luck getting the correct ecm from a chev. Thinking about this though isnt that v6 a carburetor engine? Does it even need a ecm?
Your 5 speed has no ecm so the ecm from an auto will not do anything

[JCBATCH]

The Trooper has the GM 2.8 V6 with TB carb.

[geeves]

ok you know more about the usa models than me.

[BroNZ]

What do you want to get by adding an ECM?