2002–2009 Chevy Trailblazer / GMC Envoy GMT360 BCM — Programmed to Your VIN

Refurbished & Programmed — Ready to Install

We sell and program replacement Body Control Modules for the entire GMT360 platform. Every unit is tested, refurbished, and programmed to your VIN with your factory option configuration before it ships. Plug it in and go — no dealer visit required.

The 2002–2005 and 2006–2009 part numbers are split into different hardware revisions below, but they are functionally the same. Order based on your vehicle year and we'll match the correct unit.

Two Options — You Choose

Option 1: Send Us Your BCM — $175

Already have a replacement BCM? Ship it to us with your VIN. We'll program it and send it back ready to install.

1. Order and provide your VIN at checkout.

2. Ship us your BCM.

3. We program it — VIN, vehicle configuration, and option setup.

4. We ship it back. Plug in and go.

Option 2: Buy a Programmed BCM — $250

Don't have a BCM yet? We'll provide a tested, refurbished unit programmed to your VIN and ready to install.

1. Order and provide your VIN at checkout.

2. We pull a tested, refurbished BCM from inventory and program it to your vehicle.

3. It ships to you. Plug in and go.

Why GMT360 BCMs Fail

The Trailblazer and Envoy are notorious for BCM failures. If you're on this page, you're probably dealing with one or more of these:

Blower Motor Stuck on High The most common GMT360 BCM failure. The blower fan runs at full speed as soon as you turn the key on and won't respond to the fan speed controls. This happens when the BCM's internal blower motor driver circuit shorts — the BCM loses the ability to regulate fan speed and defaults to full power. Replacing the blower motor resistor won't fix this. If the fan runs on high with the resistor connector unplugged, the BCM is the problem.

Security / No-Start / No-Crank The security light stays on solid or flashes and the vehicle won't crank. The BCM handles Passlock communication — when the internal circuitry degrades, it can no longer validate the ignition key signal and locks the starter out.

Erratic Lights, Locks, and Windows Interior lights turning on or off randomly, door locks cycling on their own, windows not responding to switches, or turn signals malfunctioning. These are all BCM-controlled functions and point to a failing module.

Gauge Cluster Issues Speedometer, tachometer, or fuel gauge acting erratically or dropping to zero. The BCM communicates vehicle data to the instrument cluster over the serial data bus — a failing BCM sends corrupt data.

Multiple DTCs Across Unrelated Systems When a scan tool pulls codes from the BCM, HVAC, security, lighting, and cluster modules all at once, the common link is usually a failing BCM.

Compatible Vehicles

Chevrolet Trailblazer 2002–2009

Chevrolet Trailblazer EXT 2002–2006

GMC Envoy 2002–2009

GMC Envoy XL 2002–2006

GMC Envoy Denali 2005–2009

Buick Rainier 2004–2007

Oldsmobile Bravada 2002–2004

Isuzu Ascender 2003–2008

Saab 9-7X 2005–2009

Compatible Part Numbers

Your part number is printed on the BCM label or can be read with a scan tool. The two groups below are hardware revisions — they are functionally the same. Confirm your part number is listed before ordering. If it's not here, contact us and we'll check compatibility.

2002–2005 Revisions

09352135 · 15065293 · 15065294 · 15077187 · 15114669 · 15114670 · 15122670 · 15122671 · 15191621 · 15191622 · 19369360 · 19370405 · 19370406

2006–2009 Revisions

15135466 · 15214852 · 15787809 · 15858066 · 25802312 · 19369361 · 19370407

What Is a Body Control Module?

The Body Control Module (BCM) is the central electronic controller for your vehicle's body and accessory systems — HVAC blower speed, power windows, door locks, interior and exterior lighting, security/Passlock, instrument cluster communication, and more. On GMT360 vehicles the BCM is located behind the lower dash panel on the driver's side.

A replacement BCM must be programmed to your vehicle's VIN before installation. Without programming, the module will not communicate with the rest of the vehicle. That's what we do.

After Installation

Passlock / VATS Security Relearn A 30-minute Passlock relearn is required before the vehicle will start:

1. Connect a jump pack — do not let battery voltage drop below 11.5V.

2. Attempt to start the vehicle, then return the key to the RUN position.

3. Wait 10 minutes. Turn key to OFF.

4. Return key to RUN. Wait 10 minutes. Turn key to OFF.

5. Return key to RUN. Wait 10 minutes. Turn key to OFF.

6. The next key cycle will relearn the Passlock data. The vehicle should now start.

Airbag Light / DTC B1001 (Option Configuration Error) An SDM Primary Key Setup procedure may be required to sync the new BCM with the airbag module. This requires a Tech2 or compatible J2534 scan tool. We can walk you through this if needed.

Brake Pedal Position (BPP) Sensor Calibration A BPP learn procedure may be required to restore proper brake light operation and cruise control functionality.

Personalization Settings Driver preferences (auto-lock, lighting options, remote lock feedback, etc.) may need to be reconfigured through the Driver Information Center. Consult your owner's manual.

Why Buy From Us?

The GMT360 is one of the most common BCM failure platforms GM ever built. Dealerships will sell you a new module at full list price — if they can even get one — and charge you shop time for programming. We stock tested, refurbished units and handle all the VIN programming before it ships. No dealer markup, no unnecessary shop visits.

If you have questions about your specific vehicle, part number, or symptoms, contact us before ordering and we'll confirm the BCM is your problem.