2003 – 2007 GMC Sierra 3500 BCM (BCM) 15747545 – Pre-Programmed to Your VIN with One-Year Warranty from Highway71AutoParts.com
Ever dealt with erratic dashboard lights flickering on your 2003-2007 GMC Sierra 3500 during a long haul, or wondered why your power windows and locks suddenly act up after a rainy drive? As a seasoned mechanic who’s fixed countless GM trucks, I’ve seen how a failing Body Control Module (BCM) can turn a reliable rig into a headache, especially when towing heavy loads. Symptoms like intermittent electrical glitches, unexplained DTC codes such as P0601 or U0140, or even issues with remote keyless entry often point to BCM failure from age, moisture exposure, or voltage spikes. This pre-programmed BCM, part number 15747545, arrives ready for your specific VIN, flashed with the latest GM updates to clear those pesky codes and restore seamless operation. It fits a range of compatible models including various Sierra and Silverado pickups (exc. Crew Cab in many cases), Savana and Express vans without commercial tradesman packages, and even the SSR from 2003-2006. By addressing root causes like corroded connectors or software glitches, this module not only fixes immediate problems but enhances overall vehicle reliability, improving towing stability and reducing downtime on the road.
Key Features & Benefits
- Arrives fully programmed using your VIN for exact match to your 2003-2007 GM vehicle, ensuring plug-and-play compatibility without dealership visits.
- Incorporates newest GM software flashes to resolve common electrical faults, helping clear DTC codes and prevent recurring check engine lights.
- Boosts system efficiency for features like interior lighting and anti-theft systems, ideal for owners facing “2003 GMC Sierra BCM no start issues” in cold weather scenarios.
- Comes with a solid one-year warranty, giving peace of mind for heavy-duty use in trucks like the Sierra 3500 during demanding towing tasks.
- No core charge means straightforward replacement, saving you time and hassle while maintaining OEM-level performance.
- Supports multiple part numbers including 15167329, 15194169, 15136224, and more, broadening fitment for various transmission options like MT or AT with opt MT1.
Common Issues & How This Fixes Them
In my two decades of diagnosing GM vehicles, BCM failures often manifest in subtle yet frustrating ways. For instance, on a 2005 Sierra 3500, you might notice doors not locking properly or headlights dimming unexpectedly—typically due to internal circuit degradation from years of vibration and heat. This can trigger DTC codes that affect everything from fuel pump relays to climate control, leading to poor performance during highway towing. Another common headache is the “2004 Chevy Silverado BCM electrical problems” where moisture ingress causes short circuits, resulting in random power losses that compromise safety on long trips.
Replacing with this VIN-specific BCM resolves these by recalibrating the body’s electrical network, effectively clearing error codes and restoring functions like power mirrors or alarm systems. Take a real case: A client with a 2006 Savana 2500 van reported intermittent wiper failures; after swapping the BCM, we eliminated the issue, improving visibility in bad weather and enhancing daily reliability. For vans without the commercial tradesman package, it prevents cascading failures in dash-mounted units. Expert tip: Always scan for codes pre-install to pinpoint if BCM is the culprit, avoiding misdiagnosis with similar issues like faulty grounds.
Easy Installation Guide
- Provide your VIN after purchase so we can program the BCM with the latest GM updates tailored to your vehicle.
- Disconnect the battery to ensure safety and prevent electrical surges during the swap.
- Locate the BCM—under the steering column in pickups like Sierra or Silverado (exc. Crew Cab), or center dash in vans like Savana or Express.
- Remove the old module by unplugging connectors and mounting bolts, then install the new one securely.
- Reconnect the battery and perform any necessary relearns: If a no-start occurs post-install, initiate theft relearn by cycling the key from off to run (without starting) 3 times for 10 minutes each, allowing the system to sync.
- Test all functions, including lights, locks, and accessories, to confirm resolution.
Fitment Details
Compatible with:
2003 – 2007 GMC Sierra 3500
Verify part numbers; provide VIN for confirmation. No core charge required.
Don’t let BCM woes sideline your 2003-2007 GMC Sierra 3500 any longer—grab this pre-programmed module today to regain control and hit the road confidently. With expert-backed fixes that clear DTC codes and improve towing reliability, it’s the smart choice for lasting performance. Order now and provide your VIN for a seamless match!