Chevrolet/GMC
FULL SIZE TRUCK & SUV
1/12
SPT-21GM
Speaker System for Chevrolet/GMC
Installation Manual
Model: Select GM Trucks and SUVs
Model Year: Truck (2007-2013)/SUV (2007-2014)
Trim Level: NON-BOSE Systems
Introduction
Design and specifications are subject to change without notice for improvement.
To Ensure Safe Use, Always Follow These Precautions
The installation of this product requires specialized skills and experience. We recommend that you have the
product installed by the store that you purchased it from.
Before you use this product, be sure to carefully read this installation manual and the separate user's manual
so that you can use the product correctly. Alpine Electronics bears no responsibility for problems that arise as
a result of failure to follow the instructions in the manuals.
This manual includes a number of symbols that are intended to help you use the product safely, to prevent
harm to you and others, and to protect against damage to property. These symbols and their meanings are
listed below. Make sure you fully understand these symbols before you begin reading the main text.
Explanations of Injury and Damage That May Result from Incorrect Use
Warning
Ignoring the content marked by this indication and using the product incorrectly is
expected to lead to death or serious injury.
Caution
Ignoring the content marked by this indication and using the product incorrectly is only
expected to lead to injury or property damage.
CHEVROLET
Model
Year
AVALANCHE
2007 - 2013
SILVERADO
2007 - 2013
2500HD
2007 - 2013
3500HD
2007 - 2013
SUBURBAN
2007 - 2014
TAHOE
2007 - 2014
GMC
SIERRA
2007 - 2013
2500HD
2007 - 2013
3500HD
2007 - 2013
YUKON
2007 - 2014
YUKON XL
2007 - 2014
* The specified vehicles have been tested and have met compatibility specs at the time of testing. Compatibility is
not guaranteed if the manufacturer has made production changes to the vehicles listed above. Factory systems
equipped with Bose are not compatible with this system.