Crux SOCGM-17C User Manual

- Retains factory features in select GM Class II Data Bus vehicles while functioning with an

aftermarket radio.

- Supports Bose, Monsoon, Y-91 audio and non-amplified audio systems.

- Retains chime functions.

- Built-in chime volume adjustment.

- EIA color coded wiring for easy installation.

1. The Front and Rear fading are not retained on Y-91 Bose System.

2. Chime includes: seat belt, check engine, key in ignition, low fuel, low oil and lights on.

SOCGM-17C Module

SOCGM-17C Harness (GM-C2)

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If the vehicle is equipped with an amplified audio system, the SOCGM-17C has a built-in audio
level adaptor that outputs the proper audio level from the aftermarket radio to the factory
amplifier. To use this feature, plug in the male 8-pin connector on the GM-17C harness to the
GRAY female 8-pin connector on the GM-17C module. The module is also labeled “Bose” and
“Non Bose” to avoid confusion. (see picture below)

If the vehicle is NOT equipped with a factory amplified system, plug in the male 8-pin connector
to the BLACK female 8-pin on the GM-17C module.

The SOCGM-17C has a potentiometer to adjust the chime volume. It is set at half way by
default. To adjust the volume, simply use a suitable screw driver and turn the potentiometer
clockwise to increase the volume and counter-clockwise to decrease the volume.

BOSE

(Amplified)

Connection

Non-BOSE

(Non-Amplified)

Connection

Chime

Volume

Adjustment

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