Restore Full Electrical Control to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your 2002 Suburban? Flickering lights, power windows with a mind of their own, a security light that won’t turn off, or intermittent starting issues are all classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can make your reliable truck feel unpredictable. This isn’t just an annoyance; it’s a matter of function and safety. This replacement 2002 Suburban BCM is the definitive solution to restore order and get your vehicle operating exactly as it should.
Case Study: A Tricky Diagnosis
Just last month, a 2002 GMC Yukon XL rolled into my bay with a laundry list of bizarre symptoms. The owner complained of the radio turning off randomly, the dome lights staying on, and the power locks working only half the time. He had already replaced the battery and checked all the fuses. After connecting my scan tool, I noticed communication errors with multiple systems, all pointing back to one component. By monitoring data streams from the BCM, I could see erratic voltage outputs. This confirmed the BCM itself was the source of the electrical chaos. Swapping in a properly programmed BCM like this one solved every single issue instantly. It’s a common failure I’ve seen hundreds of times on these GMT800 platforms.
Is Your GM Truck or SUV Showing These Signs?
- ✔ Power windows, mirrors, or door locks operating erratically or not at all.
- ✔ The security or anti-theft light is flashing, preventing the engine from starting.
- ✔ Interior or exterior lights flicker, stay on, or fail to turn on.
- ✔ The radio or instrument cluster randomly loses power.
- ✔ False warnings appearing on the driver information center (DIC).
- ✔ Inconsistent A/C and heater blower fan operation.
The Easiest BCM Replacement You’ll Ever Do
The biggest headache with replacing a BCM has always been the expensive and time-consuming programming required at a dealership. We eliminate that completely. When you purchase this module, you simply provide us with your vehicle’s VIN. We then flash the BCM with the latest, most stable GM software specific to your exact vehicle configuration. It arrives at your door ready for a straightforward installation, saving you hundreds in dealer fees and vehicle downtime. This is the most efficient way to get a reliable, long-term fix for your 2002 Suburban BCM problems.
Your Straightforward Installation Guide
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the BCM: On most 2002 GM full-size trucks and SUVs, the BCM is located under the driver’s side of the dashboard, to the left of the steering column.
- Remove and Replace: Carefully disconnect the multiple wiring harnesses from the old BCM. They use locking tabs, so be gentle. Unbolt or unclip the old module and install the new one in its place.
- Reconnect Everything: Securely plug all wiring harnesses into your new, pre-programmed BCM. Reconnect the negative battery terminal.
- IMPORTANT Post-Installation Steps: After installation, two procedures are required. First, the airbag light will be on. A scan tool with GM capabilities is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the BCM with the airbag system. Second, some vehicles may require a brake pedal position sensor recalibration for proper brake light function and cruise control operation.
Verified to Fit These GM Models
This BCM is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is guaranteed to fit the following vehicles:
- Cadillac Escalade: 2002 (4×2)
- Chevrolet Avalanche 1500: 2002 (4×2)
- Chevrolet Blazer S10: 2002-2005
- Chevrolet S10 Pickup: 2002-2004
- Chevrolet Silverado 1500/2500/3500: 2002
- Chevrolet Suburban 1500/2500: 2002
- Chevrolet Tahoe: 2002 (4×2)
- Chevrolet Astro Van: 2002-2005
- GMC Jimmy S15: 2002-2005
- GMC Sonoma: 2002-2004
- GMC Sierra 1500/2500/3500/Denali: 2002
- GMC Yukon & Yukon XL 1500/2500: 2002
- GMC Safari Van: 2002-2005
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that acts as the central control unit for your vehicle’s body-related electronic accessories. It manages functions like power windows, locks, interior/exterior lighting, the security system, and the instrument cluster.
Is this part truly plug-and-play?
Yes, this BCM comes programmed to your VIN, making the physical installation plug-and-play. However, as noted, you will need a capable scan tool for post-installation procedures like the airbag system reset and potentially a brake pedal relearn to ensure all systems function correctly.
How do I provide my VIN number?
After you complete your purchase, you will receive instructions on how to send us your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your module without it.
Will this fix my flashing security light and no-start problem?
In most cases, yes. A faulty BCM is the most common cause of a flashing security light and a related no-start condition on these GM vehicles. This programmed module is designed to resolve that communication failure.
What if my original part number isn’t DPNU?
No problem. This module is a direct replacement for several part numbers, including 15063578, 15081796, 15095334, 19208537, and DKAK. As long as your vehicle is on the compatibility list, this part will work.