Restore Full Electrical Function to Your GMC Savana Van
If you’re dealing with frustrating electrical gremlins in your 2004-2007 GMC Savana 1500 Van, a failing Body Control Module (BCM) is the most common culprit. As a technician with over 20 years of experience, I’ve seen firsthand how a bad BCM can cause a cascade of bizarre issues that seem unrelated. This OEM-quality replacement, part number 15136225, is the definitive solution. It arrives expertly programmed to your vehicle’s specific VIN, eliminating the need for expensive dealership visits and ensuring a seamless, plug-and-play installation. Get your work van’s critical systems—from power locks and windows to interior lighting and HVAC controls—working reliably again.
A Technician’s Notebook: The Case of the Unreliable Work Van
A local contractor brought in his ’06 Savana 2500, complaining that the interior lights would flicker, the power locks worked only half the time, and the A/C blower motor would cut out on hot days—a major problem for his crew. He’d already replaced the battery and checked fuses with no luck. After connecting my scan tool, I saw several communication DTCs pointing to the BCM. Instead of a costly diagnostic rabbit hole, we installed a VIN-programmed BCM. In under 10 minutes, every single one of his electrical issues was gone. It’s a common failure, and this part is the most direct and reliable fix.
Is Your Savana Van Showing These Electrical Issues?
- ✔ The HVAC blower motor works intermittently or not at all.
- ✔ Power windows or door locks operate erratically or have failed completely.
- ✔ The security system acts up, causing a no-start condition or false alarms.
- ✔ Interior dome lights or exterior lights flicker, stay on, or won’t turn on.
- ✔ The airbag warning light is illuminated, often with a B1001 diagnostic code.
- ✔ You’re chasing multiple, seemingly random electrical DTCs.
A Straightforward Guide to BCM Installation
Replacing the 2004-2007 Savana 1500 BCM is a simple job that most DIYers can complete in minutes. In these vans, the module is typically located in the center of the dash.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and to help reset the system.
- Locate the BCM: Find the module behind the center dash panel. You may need to remove a trim piece for access. It will have several multi-pin electrical connectors attached.
- Swap the Modules: Carefully disconnect the wiring harnesses from the old BCM. Unbolt or unclip the old module and remove it. Secure the new, pre-programmed BCM in its place.
- Reconnect & Test: Firmly re-attach all wiring harnesses to the new module. Reconnect the battery terminal. Start the vehicle and test all functions—lights, locks, windows, wipers, and HVAC—to confirm the repair.
Post-Installation Notes
Because this module is pre-programmed, most vehicles will not require any further steps. However, in some cases, a post-install procedure may be necessary. If your airbag light remains on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. This syncs the new BCM with the airbag system. This is a simple procedure for any professional technician. Best of all, there is no core charge, so you don’t have to worry about the cost or hassle of sending the old part back.
Verified Vehicle Compatibility
AVALANCHE 1500 03-06 Body Control (BCM); (under steering column)
AVALANCHE 2500 02-06 Body Control (BCM); (under steering column)
ESCALADE & ESV & EXT 03-06 Body Control (BCM); (under steering column)
EXPRESS 1500/2500/3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
HUMMER H2 04-07 Body Control (BCM); (LH dash)
HUMMER H2 03 Body Control (BCM); ID 8116
SAVANA 2500/3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SIERRA 1500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SIERRA 1500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), Crew Cab
SIERRA 2500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SIERRA 2500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), AT/MT, Crew Cab
SIERRA 3500 PICKUP 03-06 Body Control (BCM); (under steering column), crew cab
SIERRA 3500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), AT/MT, crew cab
SIERRA DENALI 03-07 Body Control (BCM); (under steering column)
SILVERADO 1500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SILVERADO 1500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), Crew Cab
SILVERADO 2500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SILVERADO 2500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), AT/MT, Crew Cab
SILVERADO 3500 PICKUP 03-06 Body Control (BCM); (under steering column), crew cab
SILVERADO 3500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), AT/MT, crew cab
SUBURBAN 1500/2500 03-06 Body Control (BCM); (under steering column)
TAHOE 03-06 Body Control (BCM); (under steering column)
YUKON & YUKON XL 1500/2500 03-06 Body Control (BCM); (under steering column)
Frequently Asked Questions About the 2004-2007 Savana 1500 BCM
Do I need to have this BCM programmed by a dealer?
Do I need to have this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you time and money by avoiding a trip to the dealership.
What does ‘no core charge’ mean?
Do I need to have this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you time and money by avoiding a trip to the dealership.
My airbag light is on. Will this fix it?
Do I need to have this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you time and money by avoiding a trip to the dealership.
Is this a difficult part to install myself?
Do I need to have this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you time and money by avoiding a trip to the dealership.
Which part numbers does this module replace?
Do I need to have this BCM programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for installation, saving you time and money by avoiding a trip to the dealership.