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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
* 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.
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
Ignoring the content marked by this indication and using the product incorrectly is
Warning
expected to lead to death or serious injury.
Ignoring the content marked by this indication and using the product incorrectly is only
Caution
expected to lead to injury or property damage.
Model
AVALANCHE
SILVERADO
CHEVROLET
2500HD
3500HD
SUBURBAN
TAHOE
SIERRA
2500HD
GMC
3500HD
YUKON
YUKON XL
Chevrolet/GMC
FULL SIZE TRUCK & SUV
Year
2007 - 2013
2007 - 2013
2007 - 2013
2007 - 2013
2007 - 2014
2007 - 2014
2007 - 2013
2007 - 2013
2007 - 2013
2007 - 2014
2007 - 2014
˜ 1/12
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Summary of Contents for Alpine SPT-21GM
- Page 1 ˜ 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.
- Page 2 Chevrolet/GMC FULL SIZE TRUCK & SUV ˜ 2/12 Types of Precautions Indicates actions that are forbidden Indicates actions that are (must not be performed) mandatory (must be performed) Forbidden Mandatory Indicates that disassembly is Marks content that should receive forbidden. your full attention.
- Page 3 Chevrolet/GMC FULL SIZE TRUCK & SUV ˜ 3/12 When making a hole in the vehicle body, be careful to avoid damaging pipes, the fuel tank, electrical wiring, and the like. This kind of damage could lead to an accident or fire. When installing and grounding the product, do not use any of the bolts or nuts of the steering wheel, brakes, fuel tank, or the like.
- Page 4 Chevrolet/GMC FULL SIZE TRUCK & SUV ˜ 4/12 Accessory List Speaker Parts Front Door Component Rear Door Coaxial Speakers A-Pillar Tweeter Pod w/Tweeter Speakers SPT-70C SPT-70 Installed Installation Kit Parts Door Speaker Adapters (4 pcs) Door Speaker Harness Adapter A-Pillar Tweeter Harness (4 pcs) Adapter (2 pcs) Tweeter Crossover Network...
- Page 5 Chevrolet/GMC FULL SIZE TRUCK & SUV ˜ 5/12 Component Locations A-Pillar Tweeter Pod Component Speaker Rear Door Coaxial Speaker...
- Page 6 Chevrolet/GMC FULL SIZE TRUCK & SUV ˜ 6/12 Front Door Panel Removal Remove the door handle cover. Remove the window switch assembly. Extract 2 x 10mm bolts and remove handle. Remove the screw cover behind the door release handle. Extract 1 x 10mm bolt. Remove the interior side mirror cover plate.
- Page 7 Chevrolet/GMC FULL SIZE TRUCK & SUV ˜ 7/12 Detach the door latch release cable, press the retaining clips towards each other to disengage the Factory Speaker Removal (Front) cable from the housing. Remove the factory speaker held by 1 x 7mm screw. Release the cable ball end from the retainer.
- Page 8 Chevrolet/GMC FULL SIZE TRUCK & SUV ˜ 8/12 Front Speaker Installation Rear Door Panel Removal Connect the door speaker harness adapter to the Remove the door handle cover plate. factory speaker plug. Remove 2 x 10mm bolts. Remove the cover plate behind the door release handle.
- Page 9 Chevrolet/GMC FULL SIZE TRUCK & SUV ˜ 9/12 Remove the window switch assembly. Release the cable ball end from the retainer. Cable Ball Unplug the electrical connectors from window switch assembly. Remove the panel completely and set aside. Remove the door panel using a panel removal tool. Please note clip locations below Detach the door latch release cable, press the retaining clips towards each other and disengage...
- Page 10 Chevrolet/GMC FULL SIZE TRUCK & SUV ˜ 10/12 Factory Speaker Removal (Rear) Rear Speaker Installation Remove the factory speaker held by 1 x 7mm screw. 1 Connect the door speaker harness adapter to the Retain the original screw for the new speaker replacement. factory speaker plug. Factory Door Speaker Speaker Plug Harness Adapter Bundle the cable up and secure using a cable tie.
- Page 11 Chevrolet/GMC FULL SIZE TRUCK & SUV ˜ 11/12 Factory A-Pillar Panel Removal Tweeter Pod Installation Remove the A-Pillar cover. Remove the factory tweeter by releasing the tabs on The passenger side has a grab handle. the back of the A-pillar. Mount the tweeter pod using the provided washers and screws.
- Page 12 Chevrolet/GMC FULL SIZE TRUCK & SUV ˜ 12/12 Install the A-Pillar using the reverse procedures. Ensure the excess tweeter wires are not exposed. Passenger side A-Pillar Driver side A-Pillar Repeat the process for the other A-Pillar.
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