GMTRK4
Installation and Operation Manual
PG 33/42
REV: BETA (4/4/2020)
9.7.
Install Air Horn Driver Sub-Assembly & Connect Air Tubing
9.7.1.
Place Air Horn Driver sub-assembly over frame and attach using
shown in below illustrations. An extendable magnet tool may facilitate inserting H9 & H10 through
“Horn Mount Point 2”. A
pply medium-strength Loctite to fasteners and
final torque to 75 in-lbs.
NOTE:
Hardware H12 (Clip-On Nut)
must go over BOTH Bracket and Frame.
First spread Clip-On
nut open using a pry bar and pliers if having difficulty installing over both parts.
Figure 25
–
Air Horn Sub-Assembly installed over Frame with H12 Clip-On Nut (2020 Silverado Shown)
9.7.2.
Reinstall OE Engine Shield, as shown below and
final torque to 120 in-lbs.
Figure 26
–
Air Horn Sub-Assembly installed with Engine Shield in place (2020 Silverado Shown)
H12 Clip-On Nut
OVER Bracket &
Frame
Engine Shield &
OE Bolt Re-
installed
Horn Bracket
FRONT
FRONT
