How to replace BCM on Saturn 2003 L200 - L200 Mitsubishi Cars & Trucks

Hello,

I think you're asking about the BCM (Body Control Module).

Check out this video:
Saturn BCM body control module Removal

2003 saturn l200 fuel filter location Google Search

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Donald Deane MCSE,MASTER ASE,CPO

So, what's you question ????

disconnect battery cable for a few minutes. diagnose bcm power supply circuitry and wiring.

You will need it at a shop that can run diagnostics on saturns. I sure hope you can find an independent shop, and not have to take it to a GM dealership, who like people with big fat wallets.
You will need probably a high end scanner to scan the body control module. I think, but not positive, that the bcm has a hand in fuel pump control.
Go here and post your question. There is a tech there called saturntech who can answer all Saturn questions.http://www.2carpros.com/makes/saturn/l200.
Or go there and search. they do answer free questions. They also have a donation program to keep the site up and going, but do not require donations.

Any PCM, BCM, or ignition switch assembly that's replaced requires what's described as a Passlock re-learn procedure to synchronize the three subassemblies for proper operation. This either takes place at Saturn or during a 30-minute DIY procedure in three 10-minute cycles. The procedure is basically to leave the ignition ON for 10-minutes, cycling the ignition OFF and then ON for another 10-minutes and once more until repeated three times, never starting at any time. After the third cycle the ignition can be turned to start the engine to confirm that all components have successfully been synchronized. A failure to start means an incorrect re-learn procedure was done and needs to be repeated all over again. The security light will flash during the process and eventually turn off altogether as indication of successful re-learing security codes for any new part replaced. What isn't changed are the VIN and mileage that Saturn equipment can do. The security system is divided into three parts; the ignition switch sensors, the PCM, and the BCM. Any one of these subassemblies being replaced requires the BCM to relearn the new replacement part otherwise you'll just have a dead engine unable to run. New BCM's come as blanks that Saturn address' with their Techtool II with VIN and mileage copied from the failed BCM. 'Field' BCM's removed from vehicles still retain VIN and mileage that can only be changed by Saturn. There may be other programmed accessories that have to considered to be compatible to the original one removed for replacement.

key remotes

Replacing the BCM will require the remotes to be reprogammed. The problem is that you need a scan tool with the proper software to perform the programming. Here is the procedure for reprogramming if you have access to a tool. If not you should put a call into a local garage that does diagnostic work or the dealer. If it were just a battery change you could resync without programming.

It always seems that answers to Saturn L problems often derive wildly different solutions, and my GM dealer has performed extensive electrical work to the wiring harness & replaced the fuse block and after I paid the $751. It turned out all the front lighting was totally out of whack and they expect more $ to get that right! It seems to me that they recommended the work and now expect a blank check and keep finding more issues to charge me for. They even suggest that they replace the BCM... Please BEWARE of Ed Rikne GM in Center Line MI. There very HUNGRY for the $$$!

Should be a electrical box under thehood labeled fuses and relays. Locate the fan relay by looking at the diagram underthe box and change it out, It unplugs.

either the fuel sender in the gas tank is bad or the bcm is bad,most likely sender

Sorry to say but it's probably the BCM (body control module) that's going in her car. The BCM controls everything inside your car, from the gauges, locks, daytime running lamps, ABS... and yes the security system. I have a 2003 L200 which had the same problem and I had to replace the BCM at some cost ($400-$600) depending on where you go. The L-Series Saturns seem to have a problem with their BCMs and it seems that it's pretty prevalent. Unfortunately it will only get worse as time goes on and it's not something that you can do yourself as it needs to be programmed by the dealer. You also will need to get your remotes reprogrammed as well with the new BCM. Hope this helps.