2001 Lesabre - Ignition control module
 

Hi everyone

before year ago , I replaced the Ignition control module (ICM) and the 3 coils on it (all the parts was original from AC-delco) . And I kept the old one to reserve . I knew that the weak point of the GM 3800 is the ICM and those coils .

after 10 months the ICM (the new one) goes bad , I replaced it with the old one that I kept and it start working fine until yesterday ! Again , the ICM goes bad . Now , I bought a new one (AC-delco) and put it and it works fine .

why the ICM goes bad so quickly ? It is not a cheap part ...
I did something wrong ?

please help me

A bad coil can blow them. Even though the coil still works.

Thank you .
just to be sure , toady I switched between the old and the new coils .

someone told me to spread a dialectric grease under the ICM . It's true ? Maybe that my problem ?

Thank you

Yes to the dielectric. Clean where it makes contact with the block then add the grease. That's where the module gets it ground. Also, make sure the ground to the engine block is clean and tight.