Not starting

So which engine do you have?Also with everything plugged in and you clear the codes which codes come back?

6 cylinder the code reader will not work with everything plug in only when I disconnected the throttle body I can get code

I need more details so the code reader won't power on when you plug it in?Or it says won't link?

With the throttle body connected the code reader will not connect. But if I disconnect the throttle body I get error code saying my throttle system volts are to high. I can start car with throttle body wiring disconnected.

When I change throttle body do I need a calibration

Yeah you turn the key to the run positiond not start it and let it sit like that for a min.That will learn the new throttle body.so you replaced the throttle body and gas pedal with brand new ones?With the replacement parts same thing won't start with the throttle body plugged in?then you start it unplugged then plug it in with no throttle response?If so with it running and everything plugged in can you read codes?If you can if you clear them which codes come back with everything plugged in?

I cannot read codes with everything pluged in

Read my response above please answer those questions above iam not there to see things for my self.

With new throttle body and pedal all plug I put car key to on not starting it after 5 min throttle body still clicking try to get code scanner unale to connect. Unplud throttle body start car plug throttle body back in codes I get are p0123, p1779, p0222 ,p0700 p1781 unable to clear code when turn off car will not start

When you unplug things then you set all those codes.

No codes are resetting

I thought you couldn't link to the car with everything plugged in?

Witn throttle body unplug I can read codes. I start the car then plug throttle body in I can read codes but unable to reset codes listed above is what I have what can I try.

I will have to try to look in to this I have never seen anything like this before on those cars.All the fuses are good?

I believe so do you have any ideas which fuses I should double check

Any ideas have not heard any thing in a while

Have you checked the grounds especially to the ecm?

Have not heard from you any ideas

Yes you have look above your last post?it says have you checked the grounds especially the ones for the ecm?Also do have anything inop like power door locks keyless entry gas gauge temp gauge not being able to get the shifter out of park etc?Or strange things happening?

Forgot to ask because I forgot in 2004. They made L300 with 2.2L engines also .Which engine do you have?

6 cyc and I cannot shift my car out of park and some gauges don't respond unless I unplud the throttle body and then gauges work

That sounds a lot like a bad body control module.I have seen them go bad and cause those symptoms and cause you not to able to talk to the ecm.I have never tried unplugging the throttle body to see if anything changes from doing that.I have a whole stash of old bcms for testers with the symptoms of what they doing when I changed them to see what changes when I plug them in.What you say about the gauges and not being able to get it out of park are all known things I have seen happen when bcms on those cars go bad.

Where is the BCM located how much is for a new replacement

Any way to test the bcm

The bcm is on top of the glove box you have to remove the glove box and it's attached to the glove box.I have also seen bad bcms cause no starts when the gauges etc are inop.Then when the gauges work the car starts.Bcms are close to 300 plus they have to be programmed.I have seen a repair service on eBay that is much cheaper plus it keeps all your day mileage programming etc.You mail your bcm to them and they fix it and mail it back.It was very reasonable verus buying a new one and having it programmed.As far as testing them we never tested them at the Saturn dealer we just swapped it for one of our old ones we replaced and saw if it changed the symptoms.It's very common for them to go bad that's why I asked about the symptoms.Which you mentioned the ones I asked you about.You may have more than one problem but it sounds like you have a bad bcm.

You got the info so I can mail the bcm for repair

1-866-573-2740 that's the phone number for the bcm repair service call them to talk to them about your bcm.

I found a place on line the say it sounds like the ecm not the bcm the say for 80 dollars each they and test both of them let me know which is bad and repair it for 300 that way I don't have to get them preprogrammed if I get a new one.

Here's my problem with that theory not being able to take it out of park is controlled by the bcm not pm.Also if the car will only start when the gas gauge works another symptom of a bad bcm.I have replaced tons of bcms on those cars or tons of ecms.The number I gave you the guy charges 165 to repair the bcm.Go to eBay put in the search box Saturn bcm repair it will come up .Read the listing and symptoms and then post back to me and tell me what you think.

I called the place for the bcm repair I been trying to find out were and how to remove the bcm so I can send it in any help thank

I told you where the bcm was it's mounted to the glove box insert.There are multiple philps screws on the inside of the glove box.Also take all the screws that hold the glove box door out.There is also a AC duct hooked to it if memory serves right.It's been a lot of years since I have replaced one.

I have this exact same problem. Did you guys ever come up with a solution? Was it the BCM?

It looks like they went back and fourth for a while. can I ask if you have any codes and can you hear the fuel pump run in the tank when the key is in the on position?

This guide can help us get started:

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please run down this guide and report back.