Identifying DEI Module

it dont look like dei... it looks like a prestige item.

That is a 456G 12 wire. There were 2 456G's, 12 and 8 wire. The wiring is identical,

RED / BLACK/ gray-BLACK/ red-WHITE/ blue/orange-WHITE/ orange-BLACK/ GREEN/ violet on the big plug, blue/blue-WHITE/ green on the small.

It's supposed to be for full sized trucks and does locks only. The following is from DEI's site....

The 456G interfaces with specific GM full-size truck and SUV vehicles. It converts the signals from the keyless

entry, alarm, or remote start into signals that can be understood by the vehicles factory Data Bus system. This

allows for interfacing with various factory options such as factory alarms or driver's priority. The 456G also allows

for smart dome light integration on some vehicle platforms.

NOTE: Unit comes programmed in keyless mode.

For non-keyless entry vehicles:

NOTE: Use this procedure (steps 1–4) if the vehicle does NOT have factory keyless remotes, otherwise go to step 5.

1. Connect the power, ground, and data wires before inserting the harness into the module.

2. Ground the RED / WHITE wire then insert the harness into the 456G module.

3. The door locks will cycle once for confirmation.

4. Disconnect the RED / WHITE lock input wire and tape the end of the wire.

For keyless entry

5. Connect the power, ground, and data wires before inserting the harness into the module.

6. Ground the BLUE status input wire, then insert the harness into the module.

7. Door locks will cycle twice for confirmation.

8. Disconnect the BLUE status input wire, and then connect it to the remote start output of the security system.

The 456G will perform driver’s door priority when in keyless mode. The first pulse on the unlock wire will unlock the driver’s door and an

additional pulse within five seconds will unlock the other doors. If driver’s door priority is not desired, this can be done by switching the

alarm to double pulse unlock or us the BLUE/WHITE wire for all door unlock. Unfortunately, non-keyless models do not have the driver’s