2002 – 2005 – BCM (BCM) 15122670 – Pre-Programmed to Your VIN with One-Year Warranty from Highway71AutoParts.com
Frustrated by flickering dashboard lights and doors that won’t lock on your 2003 Chevrolet Trailblazer? What happens when your GMC Envoy’s wipers activate randomly during a dry drive? Drivers often report these glitches in 2002-2005 GM SUVs, stemming from a failing Body Control Module. Over my 20+ years fixing these vehicles, I’ve seen hundreds of cases where corrosion or electrical shorts in the BCM disrupt everything from power windows to interior lighting. This pre-programmed BCM, part number 15122670, arrives flashed with the latest GM updates using your VIN for a seamless fit. It resolves those headaches without dealership markups, saving you time and cash on diagnostics.
Common Issues & How This Fixes Them
In tough conditions like humid climates, BCM failures spike in these models. Moisture seeps into the fuse box area, causing short circuits—I’ve pulled apart over 300 units showing rust buildup as the culprit.
Typical symptoms include erratic power accessories, non-responsive key fobs, or persistent warning lights. For instance, a customer with a 2004 Oldsmobile Bravada came in after his headlights dimmed intermittently; scanning revealed BCM communication errors.
- Intermittent electrical failures: This replacement restores stable control over lights, locks, and gauges.
- Airbag light staying on: Post-install, perform the SDM Primary Key setup to clear it safely.
- Braking inconsistencies: Recalibrate the brake pedal if your model requires it for peak safety.
Beyond basics, analysis shows these BCMs fail at higher rates in high-mileage vehicles—around 15% after 150,000 miles, per shop data. Replacing with our VIN-matched unit prevents cascading issues, like battery drain from faulty relays.
Key Features & Benefits
This BCM comes pre-flashed with GM’s newest software, ensuring compatibility and enhanced performance. We use your VIN to program it precisely, eliminating guesswork.
Key perks include a one-year warranty, no core charge, and cross-compatibility with numbers like 15065293 and 15114669. It fits without security system variants, focusing on core body functions.
From a cost perspective, DIYers save 40-50% versus dealer prices. Plus, updated firmware addresses known bugs, like improved signal processing for better reliability in cold starts.
Easy Installation Guide
Locate the BCM near the front fuse box (or rear floor in Envoy XUV models). Disconnect the battery first to avoid shorts.
Swap the unit, then reconnect. For GM standards, theft relearn activates only if no-start happens: Insert key, turn to ON for 10 minutes, off for 5 seconds—repeat three times.
Reset the airbag warning via ‘Setup SDM Primary Key in BCM’ using a scan tool like Tech2. Some SUVs need brake pedal recalibration—press and release steadily while monitoring with diagnostics.
Pro Tip: Check for water damage in the mounting area before install; seal with dielectric grease to extend lifespan.
Steps vary by vehicle, so reference your manual or call a tech if unsure. This ensures optimal braking and safety features align.
Fitment Details
Compatible with 2002-2005 models without security systems, including Chevrolet Trailblazer (02-05, standard and EXT), GMC Envoy (02-05, XL and XUV), Isuzu Ascender (03-05), Oldsmobile Bravada (02-04), Buick Rainier (04-05), and Saab 9-7X (05).
Verify your ID matches 15122670 or equivalents. Provide your VIN post-purchase for custom programming—we ship ready-to-go.
Struggling with a faulty BCM in your 2005 Isuzu Ascender? Order now and get back on the road confidently. Your reliable ride awaits—grab this fix today!