2008-2013 Cts Body Control Module 15948438 Programmed To Your VIN VIN BCM

Is Your Cadillac Plagued by Baffling Electrical Issues?

If your 2008-2013 Cadillac CTS is experiencing strange electrical problems—like flickering lights, malfunctioning power windows, a temperamental security system, or even a no-start condition—the culprit is often a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can create a cascade of frustrating and seemingly unrelated symptoms. It’s a common point of failure I’ve seen hundreds of times over my 20 years in the shop, but the fix doesn’t have to mean an expensive trip to the dealership.

This is a direct-fit replacement BCM that we professionally program to your vehicle’s specific VIN before it ships. This critical step, our Cloning Service, ensures that the module integrates seamlessly with your Cadillac’s existing systems. You get a reliable part that’s ready for installation right out of the box, saving you from the high costs and scheduling hassles of dealer programming.

Common Signs of a Failing BCM

A failing BCM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your module needs attention:

• ✔ Erratic or non-functional interior and exterior lights.
• ✔ Power windows, door locks, or mirrors working intermittently or not at all.
• ✔ The anti-theft or security system light is on, or the alarm goes off randomly.
• ✔ Instrument cluster gauges behaving erratically or going dark.
• ✔ Communication error codes (often U-codes like U0140) stored in the system.
• ✔ The engine cranks but refuses to start due to a security system fault.
• ✔ HVAC (heating and air conditioning) controls are unresponsive.

Your Straightforward Installation Guide

Installing your pre-programmed 2008-2013 CTS Body Control Module is a manageable job for a DIYer with basic tools. For the 2008-2013 CTS, the BCM is typically located in the left-hand (driver’s side) of the dash.

1. Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
2. Access the Module: You will likely need to remove the lower dash panel beneath the steering column to gain access to the BCM. This is usually held in by a few screws or clips.
3. Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
4. Install the New BCM: Mount the new, pre-programmed module in the same location and securely reconnect all the electrical connectors. You should hear a ‘click’ as they lock into place.
5. Post-Installation Procedures: Reconnect the battery terminal. Start the vehicle and check for proper function of lights, locks, and windows. In some cases, additional steps may be needed. If the airbag light is on, an ‘Airbag System Sync’ may be required using a pro-level scan tool. A ‘Brake Pedal Position Relearn’ might also be necessary for proper brake light and traction control operation.
6. Final Check: Test all related functions to confirm the repair is complete. Your original module will be returned to you with the replacement unit.

Verified Vehicle Compatibility

This BCM is a direct replacement for part number 15948438 and is interchangeable with a wide range of other GM part numbers. It fits many vehicles beyond the Cadillac CTS. Please verify your vehicle is on this list. Important: For some models like the Tahoe/Yukon, please match the ID number on your original module.

This module replaces the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084.

Frequently Asked Questions