All symptoms are pointing to a bad ECM in my car. I did have a major vibration issue at freeway speeds due to bad motor mounts. Finding the location of the ECM online via diagram is annoying to say the least, let alone by video. Anyone have a location? I think I’ll find it under the battery box, but I’m not sure. My big question is the reprogramming. Is it a difficult process? Do I just drive it until it learns, or does it take a professional? I found a place online that will send you one programmed to your VIN. Is that worth it?

 

What makes you think it's bad. What codes is it setting. 9 out of 10 times an ECM is replaced that is good.
https://charm.li/Saturn%20Truck/2009...FWD%20L4-2.4L/

 

Camshaft position sensor. P0340 and P0341. I’ve changed it 4 times. With every major parts supplier and finally an OEM part. Never goes away. Along with 2 other codes that tie to it that I can’t remember at the moment.

 

If you're not 100% certain what the problem is, then it comes down to the most efficient parts swapping: time and effort as well as money. How much is it for the online programmed ecm? If it's not too expensive, it would be a potentially simple fix.

 

You don't need a PCM. You need a better mechanic.

 

How helpful. Thanks.

 

Go out and read all the codes and post all of them here. Can't play poker with half a deck. You can, but nobody ever wins.

Ever rented low on oil?

 

P0300 engine misfire
P0341 intake camshaft position sensor performance
P0340 intake camshaft position sensor circuit
P1682 Ignition 1 switch circuit 2

it is due for an oil change.

 

P1862 can have a large effect on how your engine runs I've seen a lot of posts on vehicles that use the same engine as yours. A lot of them conclude the issue is insufficient contact between a particular fuse for the ECM and the fuse box underneath. Check out the following YouTube video, confirm which fuse it is for you, and see if it is related to the issue.

This guy apparently solved it out of thin air also known as put his mind to it and ground through all the freaking possibilities for the basic stuff and arrived at the answer. Not very time effective, but he located the problem.

I can only expect that something under the fuse box excuse me under the fuse panel where it meets the fuse box is partially burned. Since it is part of the ignition system, and you know it's not the cam sensors, I would start here.

The p3000 is a misfire code where the car can't figure out which cylinder it is or there are multiple misfires and it just doesn't care.
https://youtu.be/KZFTjjczhPg?feature=shared

 

I’ll check out the fuse situation. I changed all of the ignition coils. They’re brand new.