ICM, (Ignition Control Module)
Thread Starter
Joined: Nov 2003
Posts: 266
Likes: 1
From: Mid Mo.
Car: 1989 GTA - Gunmetal grey
Engine: 5.7 ltr.
Transmission: 700R4
Axle/Gears: 3:27 9 Bolt Borg Warner
ICM, (Ignition Control Module)
Sorry for the long story, but I picked up 3 ICMs last fall at a yard sale on the cheap. They came in broken packages, but look new. Lady running the yard sale couldn't tell me anything, as expected. Seems her and her husband had split sheets. Anyway I can't find any info on how to check them if they are good or bad without having to actually install them. Surely they can be checked for resistance using an Ohm meter across contacts....No...Yes...?
Anybody have any info on how would be greatly appreciated. Thanks in advance.
Anybody have any info on how would be greatly appreciated. Thanks in advance.
Junior Member
Joined: Apr 2010
Posts: 58
Likes: 1
From: Waxahachie, TX
Car: 92 Firebird Convertible
Engine: 383 - First Fuel Injection TPI
Transmission: 700R4
Axle/Gears: 3:23
Re: ICM, (Ignition Control Module)
Try this site: http://easyautodiagnostics.com/gm/4....ed-icm-tests-1
Good info on how to test the ICM
Good info on how to test the ICM
Supreme Member
Joined: Apr 2006
Posts: 4,482
Likes: 9
From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: ICM, (Ignition Control Module)
Since there off take them to any chain Auto Parts store. They have a machine.
Last edited by Ron U.S.M.C.; Feb 13, 2015 at 03:02 AM.
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