Where is the body control module on a 2015 Chevy Silverado 1500?
In most 2015 Silverado 1500 trucks, the body control module (BCM) is tucked inside the cabin rather than in the engine bay. The exact mounting can vary by cab and trim, but you’ll typically find it behind the driver’s side lower dash panel or behind the glove box on the passenger side.
The BCM is the central computer that controls functions such as lighting, door locks, wipers, and some aspects of the security system. Locating it requires exposing interior trim panels, so proceed with standard safety precautions and consult a service manual if possible.
Common locations in the 2015 Silverado 1500
Use the following common locations as a guide to locate the BCM. The exact position may depend on your cab configuration (Regular, Double, or Crew) and regional market.
- Under the driver’s side dash, behind the knee bolster or near the lower dash panel. This is the most common mounting area for the BCM in this generation.
- Behind the glove box on the passenger side, accessed by lowering or removing the glove box and lower dash trim.
- Along the left side of the instrument panel or center console area, with the module concealed behind trim or a small cover plate.
- In rare configurations, mounted near the fuse/relay block inside the dash, requiring panel removal to reach the connectors.
Identifying the BCM involves looking for a compact black or dark gray module with several multi‑pin connectors and a label bearing part numbers and a GM logo.
Safety and access considerations
Before attempting any inspection or removal, ensure the vehicle is off, the battery is disconnected, and you follow proper anti‑static handling. If in doubt, consult a service manual or a GM dealer.
How to safely access the BCM (overview of steps)
Preparing to search for or service the BCM requires careful panel removal and organized steps to avoid damage to trim pieces and wiring.
- Disconnect the negative battery terminal to prevent short circuits while you work.
- Remove relevant interior panels: the driver’s side knee bolster, protective trim, or glove box assembly, depending on location.
- Visually identify the module by its connectors and labeling; avoid pulling cables or forcing panels.
- Note or photograph connector orientations before disconnecting anything so you can reassemble correctly.
- If you suspect a BCM fault, consult the vehicle’s service information for pinouts and diagnostic procedures or seek professional service.
Access to the BCM will vary; if you encounter resistance or uncertain steps, stop and consult a professional to avoid damage or triggering anti‑theft features.
Summary
The body control module on a 2015 Chevy Silverado 1500 is usually located inside the cabin, most commonly behind the driver’s side dash knee panel or behind the passenger‑side glove box, with other placements depending on trim and configuration. Access involves removing interior panels and following safety procedures; always verify with the owner’s manual or service data for your exact build.
