DiabloSport Security Gateway Bypass Harness for 2018 and Newer Dodge Chrysler Jeep Ram - 18GBC

The DiabloSport 18GBC is a bypass harness for the security gateway module in 2018 and newer Dodge, Chrysler, Jeep and Ram vehicles. The gateway blocks a tuner from writing to the PCM through the OBD-II port; this harness plugs into the factory STAR connectors behind the dash so a DiabloSport device can communicate on the vehicle bus.

Most DiabloSport PCM swap kits and PredatorX kits for these years already include the bypass. Buy this one if you need a replacement or bought the tuner and PCM separately.

Compatible vehicles

• 2018 and newer Dodge Charger, Challenger, Durango and Chrysler 300
• 2018 and newer Jeep Grand Cherokee, Wrangler JL and Gladiator JT
• 2018 and newer Ram 1500 and Ram 1500 Classic
• For use with DiabloSport inTune i3, Trinity 2 and PredatorX tuners

What it does

• Bypasses the factory security gateway so the tuner can write to the PCM
• Plug-in connection at the factory STAR connectors; nothing is cut
• Installs behind the dash, no drilling or splicing
• The gateway stays in the vehicle and the harness can be removed to return to stock

Installation and limitations

Locate the STAR connectors behind the dash (the location varies by model; instructions are included), connect the harness, then tune through the OBD-II port as normal. Remove the harness afterward if you prefer the factory gateway back in the circuit.

Specifications

• Part number: 18GBC
• Brand: DiabloSport
• Warranty: 1 year manufacturer warranty
• Country of origin: United States
• Packaged size: 9.5 x 6.25 x 1.5 in, 1 lb
• UPC: 810115018605

Frequently asked questions

Do I need this with a PCM swap kit?

Usually not. DiabloSport's PCM swap and PredatorX kits for 2018 and newer vehicles include the bypass. This is for replacements or separate purchases.

Does it stay installed?

It can. Many owners leave it in so the tuner can read, log and change settings any time. It can also be removed after tuning.

Will it work with other tuner brands?

It is designed for DiabloSport devices. Other brands supply their own bypass hardware.