I hsve a 2008 saturn sky base 2.4L. The dealer says I need a new body control module. My question does the new BCM require reprogramming? If it doesn't then I will replace myself. Thanks

Mmmmm.... start here:
2005 saturn vue bcm reprogram Google Search

and this:
http://www.saturnfans.com/forums/showthread.php?t=195610

See this:
2004 saturn bad body control module

then here:
Saturn BCM body control module Removal

Try these YOUTUBES... NOT the same year:
2004 saturn bad body control module

2002 Saturn Veu BCM issue and quick fix
(this MAY help you)?

Anthony

You take it to the dealer ! Need's to be programmed .

Body Control Module (BCM) Programming/RPO Configuration

The body control module (BCM) must be programmed with the proper RPO configurations. The BCM stores the information regarding the vehicle options and if the BCM is not properly configured with the correct RPO codes, the BCM will not control all of the features properly. Ensure that the following conditions exist in order to prepare for BCM programming:
• The battery is fully charged.
• The ignition switch is in the ON position.
• The data link connector (DLC) is accessible.
• All disconnected modules and devices are reconnected before programming.
To setup a new BCM, use the Tech 2 in conjunction with the Saturn Service Stall System . Refer to Service Programming System (SPS) in Programming.
If the BCM fails to accept the program, perform the following steps:
• Inspect all BCM connections.
• Verify that the scan tool has the latest software version

Component Name
Preliminary Procedure Remove the left side instrument panel insulator panel. Refer to Instrument Panel Insulator Panel Replacement - Left Side .
1
Body Control Module
Procedure

1. Disconnect the electrical connectors.
2. Reprogram the module if replaced. Refer to Control Module References .

Tip
Push tab to release the body control module from the bracket.

It can be done if you have the proper equipment, the correct software to install and the knowledge. Its really not needed most of the time many companies sell remaned BCM.s or will fix yours if they don't have one in stock. Check out Cardone:

http://www.cardone.com/products/electronics/electronics-products-remanufactured/body-control-modules

it is not the ECU it is the body control module. it is located under the dash on the driver's side next to the steering coluum. it does need to be reprogrammed,but make sure the numbers match. all cars tday have a ECU.BCM.transmission module and alarm module and abs mudule

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

Lot's of warning lights , check engine and all the others , You should have the vehicle checked for DTC'S - diagnostic trouble codes . Lost power codes probably ! Could be a number of thing's ,ignition switch , BCM - body control module just to name a couple . DTC'S will point in the right diagnostic direction . The electronic's on your vehicle Are complex to say the least .
The body control system consists of the body control module (BCM), communications, and various input and outputs. Some inputs, outputs and messages require other modules to interact with the BCM. The BCM also has discrete input and output terminals to control the vehicle body functions. The BCM is wired to the GMLAN High speed serial data buss and the GMLAN Low speed serial data buss and acts as a gateway between them. If the BCM does not communicate the vehicle will not start due to the inability of the engine/powertrain control module (ECM/PCM) and vehicle theft deterrent (VTD) control module to communicate without the BCM providing the gateway function.
Power Mode Master
This vehicles BCM functions as the power mode master (PMM). The ignition switch is a low current switch with multiple discrete ignition switch signals to the PMM for determination the power mode that will be sent over the serial data circuits to the other modules that need this information, and so the PMM will activate relays and other direct outputs of the PMM as needed. Refer to Power Mode Description and Operation for a complete description of power mode functions.
This is something you should have checked out by a qualified repair shop .

reprograming is very common, this is done all the time even with newer cars, some times cars new newer or diffrent programing installed in them and dealer is the only one that can do it unless someone has a dealer scan tool.As far as replacing it would depend on the problem and i think the dealer would of told them the computer was bad. hope this helps.

What Dealership ?????? Saturn dealers are no more . What is it you would like to know ? Complex electronic's involved . Ignition switch is low voltage input to the BCM - body control module. Have seen this problem your having before , BCM problem ! Service engine light on ????? What DTC'S - diagnostic trouble code's are stored , same for air bags an Traction control "OFF" What code's . Any code's stored in any module ? Do a full vehicle scan .

The body control system consists of the body control module (BCM), communications, and various input and outputs. Some inputs, outputs and messages require other modules to interact with the BCM. The BCM also has discrete input and output terminals to control the vehicle body functions. The BCM is wired to the GMLAN High speed serial data buss and the GMLAN Low speed serial data buss and acts as a gateway between them. If the BCM does not communicate the vehicle will not start due to the inability of the engine/powertrain control module (ECM/PCM) and vehicle theft deterrent (VTD) control module to communicate without the BCM providing the gateway function.

Power Mode Master
This vehicles BCM functions as the power mode master (PMM). The ignition switch is a low current switch with multiple discrete ignition switch signals to the PMM for determination the power mode that will be sent over the serial data circuits to the other modules that need this information, and so the PMM will activate relays and other direct outputs of the PMM as needed. Refer to Power Mode Description and Operation for a complete description of power mode functions.

Your best bet , try a different dealer .

Get rid of this car. There is a design flaw in that the timing chain does not get oil and will eventually fail. Some failed in as little as 20,000 miles. Mine failed at 78,000 miles which is real common. I just read on here someone was lucky to get over 100,000 miles on theirs but do you really think you will be that lucky?