Is your Saturn Outlook or other GM vehicle plagued by mysterious electrical issues? Flickering lights, malfunctioning power windows, or a dashboard that has a mind of its own are common indicators of a failing Body Control Module (BCM). The BCM acts as the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a wide range of frustrating problems. This replacement Body Control Module, part number 20935349, is the definitive solution to restore your vehicle’s functionality and peace of mind.
We make the repair process simple. Unlike a trip to the dealership, this BCM arrives at your door pre-programmed with the latest GM software updates, specifically matched to your vehicle’s VIN. This eliminates the need for expensive dealer-level programming tools. Simply provide us with your VIN after purchase, and we’ll handle the complex software flashing before we ship it out.
From the Diagnostic Bay
We had a 2009 GMC Acadia (which shares its platform with the Outlook) come into the shop with a laundry list of complaints. The owner said the radio would turn on and off randomly, the driver’s side power window wouldn’t work, and the remote key fob was unresponsive. Initial checks on fuses and wiring showed nothing obvious. After connecting our diagnostic scanner, we saw multiple communication error codes pointing to the BCM. Instead of a costly and time-consuming replacement at the dealer, the customer opted for one of our pre-programmed units. After a straightforward installation and a quick brake pedal position relearn, all the strange electrical gremlins were gone. The vehicle was back to normal, and the owner was thrilled to avoid a hefty dealer bill.
Common Symptoms of a Failing Saturn Outlook BCM
If you’re experiencing any of the following issues, a faulty BCM is the most likely culprit. Replacing it can resolve these problems and get your vehicle operating as it should.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior dome lights or exterior lights staying on or not turning on.
- ✔ Erratic or non-functional instrument panel gauges.
- ✔ Remote keyless entry system failing to respond.
- ✔ The anti-theft or security system preventing the car from starting.
- ✔ Unexplained battery drain when the vehicle is off.
- ✔ False warning messages on the driver information center.
Installation and Required Procedures
While this module is designed for a straightforward installation, some modern vehicles require post-installation steps to ensure all systems communicate correctly. After installing your new BCM, you may need to perform the following procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: To ensure proper brake light operation and traction control functionality, a brake pedal position sensor recalibration may be necessary.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
Is this Body Control Module difficult to install?
The physical installation is typically straightforward, involving disconnecting the battery and swapping the module, which is often located under the dash. However, post-installation electronic relearn procedures may be required and often necessitate a professional-grade scan tool.
How do I provide my vehicle’s VIN number?
After you complete your purchase, you can add your VIN to the order notes or simply reply to your order confirmation email with the 17-digit VIN. We cannot program and ship the module without it.
Will this BCM fix my specific electrical problem?
This module corrects issues directly caused by a faulty BCM. If your problem is due to a bad switch, wiring short, or a different module, this part will not resolve it. Proper diagnosis is key before ordering.
What happens if I don’t perform the post-installation procedures?
If required for your vehicle, failing to perform the relearn procedures can result in certain features not working correctly. For example, the airbag warning light may stay on, or your brake lights might not function as intended, which are significant safety concerns.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
Does this part fit other vehicles besides the Saturn Outlook?
Yes, this BCM is compatible with a wide range of GM vehicles, including the GMC Acadia, Chevy Traverse, Buick Enclave, Chevy Impala, Cadillac DTS, and many Express and Savana vans. Please verify your part number against the provided list to ensure compatibility.