Accutach GM Steering Wheel Button Box Installation Manual

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GM Steering Wheel Button Box

Installation Guide

Rev. 1.0

www.accutach.com

Thank you for purchasing the Accutach Co. General Motors Steering Wheel Button Box. It is designed to allow you

to repurpose the audio and/or cruise control buttons on your stock GM steering wheel to control other accessories.

Supported GM cars include: 1997-2001 Camaro, 1995-2002 Firebird, 2007-2013 Corvettes, 2010-2015 Camaros

and other GM cars, trucks and SUVs of those vintages. See the list of known compatible cars in the following

sections of this document. This box may be compatible with other models of GM vehicles.

WARNINGS and DISCLAIMERS:

You use this product at your own risk. Accutach Company is not responsible for personal injury or property damage

through the use of this product. While it is possible to use a switch in the steering wheel control wire to switch the

steering wheel button function from radio/cruise control to accessory control and back again, Accutach Company

strongly recommends that users permanently change the button functions from radio/cruise control to control of your

accessory. If you choose to use a switch against our recommendations be careful make sure you know how the

switch is set prior to pressing any steering wheel button. You'd hate to activate a line lock at road speeds while

trying to adjust the radio.

Do not touch the air bag wiring as you modify the radio control wiring near the steering column. Make sure you

disconnect the battery before doing any electrical work described in this installation guide and follow the air bag

safety recommendations in the GM shop manual.

We strongly recommend making wire connections with solder & shrink tubing, although properly made crimp splices

can also be reliable. We do not recommend using "Scotch Lock" style connections for our products. Do not use the

"twist & tape" method of connecting wires.

Before you begin:

You will need to identify a switched battery voltage power supply wire to splice into for power for the Corvette

Steering Wheel Button Box, and you will need a good chassis ground to ground the unit.

You will also need to locate a suitable place to install the unit inside of the vehicle's cabin, most likely under the

dash or in the console near the shifter. It is not intended for use in the engine compartment or anywhere outside of

the cabin. If you wish to create a custom mounting bracket out of ABS plastic you can glue it to the ABS box with

standard ABS cement from a hardware store.

Page 1

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Summary of Contents for Accutach GM Steering Wheel Button Box

Page 1 © 2019 Accutach Co. www.accutach.com Thank you for purchasing the Accutach Co. General Motors Steering Wheel Button Box. It is designed to allow you to repurpose the audio and/or cruise control buttons on your stock GM steering wheel to control other accessories.
Page 2 Accutach Co. to see if your GM vehicle is also supported. You will need to plan your button mapping The GM Steering Wheel Button Box has 8 relays and 8 pairs of colored output wires. After installation, when you press a button on the steering wheel, the relay associated with that button will close, connecting the associated colored wire pair together.
Page 3 Mode 0: (2010-2015 Camaro, etc.) Right handed Green Pair ON switch must be On for the other cruise control Yellow buttons to be enabled. Pair White Pair (ON Switch) Brown Pair Gray Orange Purple Pair WHT/BRN Pair Pair Pair Mode 0 is selected by leaving the WHT/ORN & WHT/BLK wires disconnected. Put shrink tubing over the ends of these wires to ensure they don’t accidentally short to anything.
Page 4 Off. The other cruise control buttons are enabled only when the ON switch is On. They are disabled when it is Off. The GM Steering Wheel Button Box can detect when the ON button is on or off, so that switch can also control an output.
Page 5 Mode 4: (1995-2002 Firebird, 1997-2001 Camaro, etc.) Mode 4 is selected by leaving the WHT/ORN & WHT/BLK wires disconnected. Put shrink tubing over the ends of these wires to ensure they don’t accidentally short to anything. Ground the WHT/RED wire. Purple Yellow Pair...
Page 6 Locating the Radio/Cruise Control Signal Wires The 07-13 Corvette is shown here as an example. Refer to your vehicle ’s service manual if you are unsure of how to acces the steering column wiring in your vehicle. You will need to remove the plastic cover under the drivers side dash to gain access to the wiring in the steering column.
Page 7 Here is a photo with the panel removed: Find connector C231 behind the metal panel. Slide it left to release it in order to get access to the steering wheel control signal wire. It should look like this: Connector C231 Make sure you DO NOT expose the air bag connector instead.
Page 8 Installing the GM Steering Wheel Button Box At this point, you should have unhooked the battery and followed the service manual process for disabling the air bag system. If you have not, do that now. Once you have located the signal and power lines below the clocksping mechanism, cut them both. Make sure that the power wires coming from the audio/cruise control modules are covered with shrink tubing and secured so they can’t short to anything including the vehicle body.
Page 9 Steering Wheel Box ground. For the vehicles without cruise control buttons, splice the Blue wire from the Accutach Steering Wheel Button Box to the Signal wire going up into the clockspring mechanism.
Page 10 Steering Wheel Blue Steering Wheel Button Box Signal Wire OEM Power Wire Power Wire to Steering Wheel Race Mode Indicator The following section describe how to connect the Accutach Co. Steering Wheel Button Box in a number of popular GM vehicles.
Page 11 125V and 1A. Switching of larger signals will require an additional external relay Here is a schematic diagram of how to connect the Accutach GM Steering Wheel Button Box to a Corvette with a 3PDT switch (Mode 4): Switched “VOICE”...
Page 12 Here is a schematic diagram of how to connect the Accutach GM Steering Wheel Button Box to an 95-02 Firebird, 97-01 Camaro, 92-99 Bonneville or 98-99 Riviera with a 3PDT switch (Mode 4): Switched “VOICE”...
Page 13 Here is a schematic diagram of how to connect the Accutach GM Steering Wheel Button Box to an 03-06 Avalanche, 03-06 Suburban, 03-06 Tahoe, 03-06 Sierra, 03-06 Yukon,03-07 H2 or 03-06 Escalade with a 3PDT...
Page 14 125V and 1A. Switching of larger signals will require an additional external relay Here is a schematic diagram of how to connect the Accutach GM Steering Wheel Button Box to an 03-06 Silverado with a 3PDT switch (Mode 4): Switched “PROG”...
Page 15 125V and 1A. Switching of larger signals will require an additional external relay Here is a schematic diagram of how to connect the Accutach GM Steering Wheel Button Box to an 04-09 Trailblazer, 05-08 Ascender or 04-07 Rainier with a 3PDT switch (Mode 4): Switched “PROG”...
Page 16 Here is a schematic diagram of how to connect the Accutach GM Steering Wheel Button Box to an 10-15 Camaro, 11-16 Cruze, 14-16 Malibu or 11-15 Volt with a 4PDT switch (Modes 0-3): Mode...
Page 17 Here is a schematic diagram of how to connect the Accutach GM Steering Wheel Button Box to an 07-13 Silverado, 07-14 Tahoe, 07-13 Avalanche, 07-14 Suburban, 07-13 Sierra, 07-14 Yukon, 08-09 H2 or 07-14 Escalade with a...
Page 18 ON switch. Each switch output is rated to 120V and 1A. Higher rated signals must be controlled by an external automotive relay. The GM Steering Wheel Button Box typically draws less than 20mA quiescent and less than 140mA when one or two buttons are pressed.
Page 19 Also make sure the Power wire is cut and the side that goes up to the steering wheel is grounded to the same ground that the Accutach Co Steering Wheel Button Box uses.