How to replace the ICM or ignition control module in a 1997 Buick LeSabre GM V6 3800 Series II
Rough Idle, Hesitation on Acceleration, P0300 Code
How to Replace Ignition Control Module (ICM) in a 1997 Buick LeSabre
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My car is throwing the p0171 code. Someone told me to replace this, as I've replaced the injectors, checked for vacuum leaks, etc. Does that sound right?
Did you have any issues while starting or driving before replacing it? Hard starting or a random bucking from spark abruptly ceasing? The salvage icm looked damn near new
Thank you for the instructions, my son and I replaced the coil module and the three coil packs and spark plugs yesterday and the engine light finally went off on our 2003 Chevy Malibu. We numbered the wires and new packs. Thank you.
Wish you were in St Louis Mo / you could get me some parts 314448-3400
Good job on explaining and showing the installation. Of note, You should always put HEAT SINK grease under the Ignition Module and under each Coil. Also Dielectric grease on the plug ends for the harness. The Heat Sink grease is vital to take heat away from the Coils and the Ignition module. Be sure not to confuse Heat Sink with Dielectric grease, many auto parts stores do not know the difference. You can get it under the Wells brand at most auto parts stores or online.
how did you know it was bad please explain thank you
No dialectic grease?
I have seen by replacing just one bad coil is the fix however so many say that all the coil packs should be changed is this not true?
I changed out the ICM but just noticed in the box that the new one came in that there are 3 red rubber pads that go around the plugs/studs that the coils fit on. I didn't notice that they weren't on the ICM. So is it important that I go back and get them on ? Thanks
Great vid! Lots of information. When doing this, do you have to disconnect neg battery cable? Thanks!
Good practice to replace coils and module at 100,000 miles along with wires, plugs, fuel and air filters. And PLEASE USE THERMAL PASTE, NOT DIELECTRIC GREASE on the bottom of icm. A very thin layer.
1st disconnect battery
The video keeps buffering. Can't watch it
I need help I own a 2002 Buick Regal with the 3.8 litre Series II motor & I am having a long extended crank issue when the engine is cold & then car eventually starts I replaced the spark plugs, new fuel pressure regulator, new fuel filter, new fuel line, new MAF sensor but still having a hard time starting the engine when the motor is cold could you let me know how can I solve this problem & I'm guessing that my fuel pump is weak or the crank sensor is bad or is it my ignition coil pack please get back to me Thanks.
Would have been nice to see you start the car when finished . . . .
You forgot one important step. Before installing a new ICM you need to install "thermal grease" on the bottom of it. This is NOT dielectric grease because it will destroy the ICM. Also, not using thermal grease will prematurely cause it to fail.
This helped so much!!!
Put up a video of it from a few days ago. I didnt get the upper dash though.
My car didnt throw any codes. But yet kept stalling and wouldnt move underload. Now wont start at all. No spark. 160 k miles. 97 lesabre.
Thanks bro!! Very helpful
Where did you put the thermal grease on the coils? Or on the bottom of the icm