Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Gateway Module
The GWM is mounted behind the driver side knee bolster trim panel under the driver side instrument panel. A DLC connector is fitted to the GWM. The GWM acts as a central gateway to translate messages across all 4 or 5 (optional) vehicle controller area networks (CAN). The GWM is the only module on this vehicle with this ability. The GWM also serves as a termination module for each of the networks to which it is connected.
The 2 module communication networks connected to the DLC are HS-CAN1 (DIAG 1) and HS-CAN2 (DIAG 2). These 2 networks communicate directly with the diagnostic scan tool. The other 2 or 3 (optional) communication networks, communicate on the network, but do not communicate directly with the diagnostic scan tool. The GWM translates the messages from the HS-CAN3, HS-CAN4 (if equipped) and MS-CAN to the HS-CAN2 (DIAG 2), which transfers the signals to the diagnostic scan tool.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.
