GM Class-2 Data Interface 2000-2013
•
Provides accessory power (12-volt 10-amp)
•
Retains R.A.P. (retained accessory power)
•
Retains OnStar/OE Bluetooth
•
Retains chimes
•
Adjustable volume for OnStar
•
Provides NAV outputs (parking brake, reverse, mute, and speed sense)
•
Retains audio controls on the steering wheel
•
Retains factory satellite radio
•
Can be used in non-amplified, or analog/digital amplified models
•
Adjustable gain control for for chimes and overall volume (digital amplified models only)
•
High level speaker input
•
Retains balance
•
Micro "B" USB updatable
• BX-GM4 interface • BX-GM4 harness
• 16-pin harness with stripped leads
• 4-pin to 4-pin resistor pad harness
METRA. The World's best kits.™
Installation instructions for BX-GM4
BX-GM4
FEATURES
INTERFACE COMPONENTS
APPLICATIONS
See inside front cover
metraonline.com
Table of Contents
Extra features ...............................................................6
TOOLS REQUIRED
• Cutting tool • Crimping tool • Tape • Connectors
(example: butt-connectors, bell caps, etc.)
CAUTION!
All accessories, switches, climate controls panels, and
especially air bag indicator lights must be connected before cycling
the ignition. Also, do not remove the factory radio with the key in the
on position, or while the vehicle is running.
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