Vortech 2003-2004 Chevrolet SS - Manual (Page 32)

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P/N: 4GL020-015
©2008 Vortech Engineering, LLC
All Rights Reserved, Intl. Copr. Secured
08OCT08 GM Trk/H2(4GL..015v5.0)
11.B FUEL PUMP WIRING AND INSTALLATION, (2003 H2 Hummer)
A. Remove the hood support from the passen-
gers’ side of the vehicle. Remove the plastic
cover from the power distribution center.
Unsnap the plastic casing surrounding the
fuses and relays. Mount the supplied fuel
pump relay on the lower plastic area. Leave
the hood support and plastic casing off for
installation of the water pump relay. (See Fig.
11 .A -f on page 11-2.)
B. Connect the red 12-gauge wire from terminal
#30 to the supplied fuse holder using the sup-
plied butt connector. Install a yellow ring ter-
minal on the other end of the fuse holder and
bolt to the fuse box power supply terminal.
(See Fig. 11.A-b.)
C. Feed the yellow wire from relay temrinal #85
to the fuse box (electrical center). Route the
wire to the stock fuel pump relay and connect
using the suppled fuse tap. Bend the fuse tap
as shown in Fig. 11.A-c.)
D. Run the black wire from terminal #86 on the
fuel pump relay to ground.
E. With the long red 12-gauge wire connected to
the fuel pump relay terminal #87, route the
free end down to the area near the fuel filter
on the driver’s side inner frame rail under the
door. Secure as necessary to avoid heat and
sharp edges.
F. Remove the fuel line from the inlet of the fuel
filter located on the driver’s side inner frame
rail directly in front of the fuel tank. Mount the
pump below the fuel filter on the cross mem-
ber taking care not to stress the fuel lines.
(See Fig. 11.B-a.)
G. Connect the male fuel fitting supplied in the
fuel pump assembly to the female fitting
removed from the inlet of the fuel filter.
Connect the supplied 3/8" steel female fuel
fitting to the open barb on the fuel filter. Route
the lines to avoid kinking in the hose. Secure
the discharge hose to the cross member with
the supplied adel clamp. Secure any other
hoses using tie-wraps to avoid heat or sharp
areas. (See Figs. 11.B-a, 11.B-b.)
H. Attach the previously routed red wire to the
positive terminal of the fuel pump using the
yellow terminal connector. Use the supplied
black 12-gauge wire with yellow ring terminal
to connect the negative terminal on the fuel
pump to a sufficient ground.
Fig. 11.B-a