Chevrolet/GMC
FULL SIZE TRUCK
14/31
Rear Speaker Installation
1
Connect the door speaker harness adapter to the
factory speaker plug.
Factory
Speaker Plug
Door Speaker
Harness Adapter
2
Bundle the cable up and secure using a cable tie.
3
Cut extra cable tie length.
4
Mount SPT-70 to the speaker adapter with terminals
at the bottom using 4 x 30mm screws.
5
Attach the speaker connectors to the speaker
terminals.
6
Attach the speaker to the door by inserting the
bottom tab first, then use original 7mm bolt to
secure.
Ensure you do not pinch or have the excess wire hanging inside
the door panel causing binding of the window when rolled down.
7
Install the door panel using the reverse procedures.
8
Repeat the process for the other door panel.
Factory A-Pillar Panel
1
Remove the A-Pillar cover.
There are slight differences between model year vehicles and
options.
2 3
4
2
Remove the A-Pillar screw cover plate.
3
Extract 2 x 10mm bolts (Passenger Side).
4
Remove the A-Pillar. Carefully unhook the tether clip
behind the A-pillar near the top. (Driver Side)
Tether clip
MUST
be replaced every time the
A-Pillar is removed