2002 – 2004 – BCM (BCM) 15122670 – Pre-Programmed to Your VIN with One-Year Warranty from Highway71AutoParts.com
Ever dealt with flickering dashboard lights or doors that refuse to lock on your 2002 Chevy Trailblazer during a rainy drive? Or maybe you’re asking, “Why won’t my 2003 GMC Envoy start reliably?” These frustrating electrical glitches often trace back to a failing Body Control Module (BCM), the central hub managing everything from power windows to interior lighting. Our pre-programmed BCM, featuring part number 15122670 (also compatible with 15065293, 15114669, 15191621, 9352135), arrives ready for your specific vehicle after you share your VIN. Drawing from over two decades in auto diagnostics, I’ve seen how a fresh BCM restores seamless operation, preventing minor annoyances from escalating into roadside breakdowns. This isn’t just a swap—it’s a precision-matched solution with the latest GM updates, ensuring your ride handles like new without the hassle of dealership visits.
Key Features & Benefits
- Arrives fully programmed using your VIN for exact vehicle matching, eliminating guesswork and reducing installation time.
- Includes the most recent GM software flashes to address known vulnerabilities, enhancing overall system reliability.
- Backed by a one-year warranty, giving you peace of mind on highways or off-road trails.
- No core return needed, simplifying the process and saving you extra shipping costs.
- Direct fit for models without security systems, optimizing functions like lighting and accessory controls for consistent performance.
- Expertly tested to meet OEM standards, helping avoid recurring faults in high-mileage vehicles from that era.
Common Issues & How This Fixes Them
In my shop days, owners of 2002-2004 Trailblazers or Envoys often rolled in with complaints of erratic power door locks—clicking but not engaging—or intermittent wiper failures during storms. These stem from BCM degradation, where internal circuits corrode over time, disrupting signals to relays and sensors. Another frequent headache? Dashboard warning lights staying on inexplicably, often linked to faulty communication with the fuse box. I’ve diagnosed cases where moisture ingress in the front fuse box area shorts the module, causing everything from non-functional power mirrors to random chime activations. Replacing with our VIN-programmed BCM resolves this by restoring clean signal pathways, preventing voltage drops that lead to these symptoms. For instance, a client with a 2004 Bravada had ongoing battery drain; post-replacement, it vanished, as the new unit efficiently managed sleep modes. Don’t overlook subtle signs like delayed accessory power—addressing them early avoids bigger electrical cascades. This fix goes deeper, incorporating updates that tackle software bugs GM identified in these years, ensuring your SUV’s systems sync perfectly for safer, smoother drives.
Easy Installation Guide
- Provide your VIN immediately after purchase so we can program the BCM with the latest GM specifications tailored to your vehicle.
- Disconnect the battery to ensure safety and prevent any electrical surges during the swap.
- Locate the BCM near the front fuse box (or rear floor panel in models like Envoy XUV) and carefully remove the old unit by unplugging connectors and mounting screws.
- Install the new BCM in the same position, securing it firmly and reconnecting all wiring harnesses.
- Reconnect the battery and perform any necessary relearns: If a no-start condition arises, conduct a theft deterrent relearn by cycling the key from off to run (without starting) three times for 10 minutes each, waiting for the security light to extinguish.
- Finally, use a diagnostic tool for the ‘Setup SDM Primary Key in BCM’ to reset the airbag warning light, and check for brake pedal recalibration if your model requires it for optimal safety—consult your manual or a pro if needed.
Fitment Details
Compatible with:
2002 – 2004 –
Verify part numbers; provide VIN for confirmation. No core charge required.
Get back to confident driving without the worry of electrical gremlins—order this pre-programmed BCM today and experience the difference in your 2005 Isuzu Ascender or similar model. With our expert backing and easy setup, it’s the smart choice for lasting fixes. Act now to secure your unit and hit the road smoothly!