Tired of Unpredictable Electrical Problems in Your Chevy Express Van?
If you’re dealing with a 2004-2007 Express 1500 Van that seems to have a mind of its own—with flickering lights, a dead HVAC system, or power locks that work one minute and not the next—you’re likely facing a failing Body Control Module (BCM). The BCM is the electronic nerve center for your van’s body and cabin functions. When it fails, it can cause a cascade of frustrating and hard-to-diagnose issues. This OEM-quality replacement, interchangeable with part number 15136225, is your direct, reliable solution.
We take the guesswork and high dealership costs out of the equation. Each module is professionally programmed to your van’s specific Vehicle Identification Number (VIN) before it ships. This ensures it communicates perfectly with your vehicle’s other systems right out of the box, for a true plug-and-play installation without needing a trip to the dealer for expensive programming.
From the Diagnostic Bay: The Work Van That Wouldn’t Cooperate
A local contractor brought in his ’06 Express 2500, a real workhorse. The complaint was a technician’s nightmare: intermittent no-start, the radio would sometimes stay on after the key was out, and the blower motor would only work on high. He’d already replaced the battery and checked the fuses. After connecting my scan tool, I saw a handful of communication codes and a B1001 (Option Configuration Error). These scattered symptoms pointed straight to the BCM. Instead of a lengthy diagnostic and a trip to the dealer, we ordered a VIN-programmed unit. The swap took less than 10 minutes in the center dash, and every single issue was resolved on the first try. It saved him a day of downtime and hundreds in diagnostic and programming fees.
Is Your Express Van Showing These Electrical Faults?
A faulty BCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ The security light is on, or the vehicle won’t start due to a perceived theft attempt.
- ✔ Power windows, door locks, or interior dome lights operate erratically or not at all.
- ✔ HVAC controls are unresponsive, or the blower motor is stuck on one speed or won’t turn on.
- ✔ The airbag warning light is illuminated, often with a diagnostic trouble code like B1001.
- ✔ Wipers or exterior lights (headlights, taillights) function intermittently.
- ✔ A collection of seemingly unrelated electrical DTCs are stored in the system.
A Straightforward Guide to BCM Installation
For the DIYer or professional mechanic, replacing the BCM in an Express or Savana van is a quick job. No specialized tools are required for the physical swap.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and help reset system memory.
- Locate the BCM: In the Express and Savana vans, the BCM is typically found behind an access panel in the center of the dashboard, near the floor.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. They have release tabs that need to be pressed. Once disconnected, unclip or unbolt the old BCM from its mounting bracket.
- Install the New Module: Seat the new, pre-programmed BCM into the mounting bracket and securely plug in all the electrical connectors. You’ll hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Start the vehicle and test all functions: lights, locks, windows, wipers, and the HVAC system to confirm the repair.
Important Post-Installation Note: In some cases, particularly if the airbag light was on, a procedure called ‘Setup SDM Primary Key in BCM’ may be required using a bi-directional scan tool to sync the new BCM with the airbag system. Additionally, a Brake Pedal Position relearn might be necessary. These are standard procedures that can be performed by most professional repair shops if needed.
Verified Vehicle Compatibility List
This module is a direct replacement for a wide range of GM trucks and vans. While this page focuses on the 2004-2007 Express 1500 BCM, it also fits the following models. Please verify your part number and options.
EXPRESS 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
AVALANCHE 1500/2500 03-06 Body Control (BCM); (under steering column)
SILVERADO & SIERRA 1500/2500/3500 03-07 (Classic) Body Control (BCM); Crew Cab models
SUBURBAN & YUKON XL 1500/2500 03-06 Body Control (BCM); (under steering column)
TAHOE & YUKON 03-06 Body Control (BCM); (under steering column)
CADILLAC ESCALADE, ESV, EXT 03-06 Body Control (BCM); (under steering column)
HUMMER H2 03-07 Body Control (BCM); (LH dash)
This module is interchangeable with part numbers: 10383536, 15116066, 15136225, 15136877, 15137393, 15137394, 15137395, 15137396, 15198116, 15257043, and more.