Tired of Chasing Electrical Gremlins in Your GM Truck?
If you’re dealing with flickering lights, a moody HVAC system, or power accessories that have a mind of their own, you’re not alone. The Body Control Module (BCM) is the electronic nerve center for these features, and when it fails, it can cause some of the most frustrating issues a truck owner can face. This replacement BCM, equivalent to GM part 15263497, is the definitive solution for your 2007-2010 Sierra Denali BCM and a wide range of other GM trucks and SUVs. We take the guesswork and high dealership costs out of the equation by programming it to your vehicle’s VIN before it ships. This means it’s ready for a true plug-and-play installation right out of the box.
Is Your Sierra Denali Showing These Electrical Faults?
- ✔ The security light is on, and the truck occasionally stalls or won’t start.
- ✔ Power windows, door locks, or mirrors work intermittently or not at all.
- ✔ Your HVAC blower motor is erratic, or the climate controls are unresponsive.
- ✔ An airbag warning light is illuminated, often with a DTC like B1001.
- ✔ Headlights, taillights, or interior lights flicker, stay on, or won’t turn on.
- ✔ You’re seeing various communication or body-related diagnostic trouble codes.
A Technician’s Notebook: The Case of the Phantom Ground
I had a 2009 Silverado in the bay that was driving the owner crazy. The dash lights would flicker, and sometimes the radio would cut out when he hit a bump. He’d already replaced the battery and checked the alternator. After hooking up my scanner, I saw multiple communication loss codes with the BCM. Instead of just swapping the module, I checked the BCM’s main ground point on the chassis first. Sure enough, it was corroded and loose. After cleaning the connection, half the problems vanished, but the BCM itself had already been damaged from the poor grounding. We installed a new VIN-programmed BCM and secured the ground properly. The truck has been perfect ever since. It’s a powerful reminder: always check your grounds during a BCM replacement to prevent a repeat failure.
A Straightforward Guide to Installation
Getting your truck back to normal is easier than you think. The BCM is typically located under the driver’s side dashboard, near the steering column. The entire process shouldn’t take more than a few minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before working on any electronics.
- Locate the BCM: On most GM trucks of this era, you’ll find it mounted to a bracket under the dash, to the left of the steering column.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs, so be gentle. Once unplugged, unclip or unbolt the old module from its mounting location.
- Install the New Module: Seat the new, pre-programmed BCM into the bracket and firmly reconnect all electrical connectors until they click into place.
- Reconnect Power: Re-attach the negative battery terminal. Turn the key to the ‘On’ position and test all functions—lights, windows, locks, and HVAC—to confirm the repair.
Important Post-Install Note: In some cases, particularly if you had an airbag light on, you may need a professional scan tool to perform a ‘Setup SDM Primary Key in BCM’ procedure to sync the modules. A ‘Brake Pedal Position Relearn’ may also be necessary on certain models. These are simple procedures for any qualified technician.
Verified to Fit These GM Trucks & SUVs
This module is a direct replacement for part number 15263497 and other interchangeable numbers. It is guaranteed to fit the following vehicles:
CADILLAC ESCALADE, ESV, EXT 07-11
CHEVROLET SILVERADO 1500/2500/3500 PICKUP 07-13
CHEVROLET SUBURBAN 1500/2500 07-11
CHEVROLET TAHOE 07-11
GMC SIERRA 1500/2500/3500 PICKUP 07-13
GMC SIERRA DENALI 07-13
GMC YUKON & YUKON XL 07-11
Note: For 2007 models, this fits the ‘new style’ with a smooth door skin. Please verify your part number or contact us with your VIN.
Frequently Asked Questions
What does a Body Control Module do on a 2007-2010 Sierra Denali?
The BCM acts as the central computer for your truck’s body electronics. It controls non-engine related functions like your power windows, door locks, interior and exterior lights, security system, wipers, and climate control (HVAC) system.
Is this BCM really plug-and-play?
Yes. We program the module to your vehicle’s specific VIN before shipping. This ensures it communicates correctly with your truck’s other systems, eliminating the need for a trip to the dealership for expensive programming.
Why is my airbag light still on after installing the new BCM?
This is a common security feature. The BCM and the Sensing and Diagnostic Module (SDM, or airbag module) need to be electronically ‘shaken hands’. A technician with a professional-grade scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ function to sync them and turn off the light.
Do I need to send my old part back for a core charge?
No. We do not require a core return for this part. You can keep or dispose of your old module without any extra hassle or charges.
Where is the BCM located on my 2008 Sierra Denali?
You will typically find the Body Control Module located under the driver-side dashboard, to the left of the steering column. It is usually black and has several large multi-pin connectors attached to it.