Body control module for 2003 saturn l300 - 2003 Saturn L-Series

These are located inside the transmission on the valve body.

Hello,

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

Check out this video:
Saturn BCM body control module Removal

ANSWER by patrick mannion on June 01, 2010
Looking at a wiring diagram the dome light and rear reading lights operate through the body control module. Check the BCM 2 fuse, BCM 1 fuse and BCM cluster fuse they may all be in the circuit. These fuses are in the engine compartment fuse box.

Dome glove box trunk vanity map lights all out 2003 Saturn L300

Vehicles have a varied number of electronic control modules for the engine , ABS , air bags , body control , anti- theft , keyless entry etc.. When the vehicle is parked ,key off these modules are suppose to enter into sleep mode. Some times they don't go to sleep , bad module ,wiring problem or a light is staying on. How to Find Parasitic Battery Drain

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sounds like a bad body control module. it is located in a center of the dash. the body control module runs every thing inside and lights

if u need a saturn reprogramed you could try a Cadillac dealer since it pretty much is a Cadillac motor.

the bcm,body control module counts the miles and sends it to the ipc Cluster so if its not counting miles the bcm is bad,common issue takes it oto dealer $400 ish

the car needs a body control module. if you try to replace it yourself the car will not run, it needs to be programed by the dealer.

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.