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life is a ride
1,540 Posts
I'm looking at a Chilton book for this vehicle but it does not include the 4,6,8 option or the fuel injection option.
All GM in 1981 used the CCC system. Check the emission sticker under the hood. I that what you have?

The procedure they describe calls for grounding the test terminal to view the trouble codes on the "check-engine-light".

Are you getting any trouble codes?

Will the engine run?

Looks like you have some other problem.

How do you know the ECM is bad?

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