Vortech 2003-2004 Chevrolet SS User Manual

Page 21

P/N: 4GL020-015

08OCT08 GM Trk/H2(4GL..015v5.0)

A. Remove the plastic cover protecting the vehi-

cle ECM. Unsnap the ECM from the bracket

securing it to the inner fender. Temporarily

move the ECM to the side to aid in the brack-

et relocation.

B. Remove the two screws securing both the

battery tray bracket and the upper tab of the

ECM bracket. Remove the final screw secur-

ing the botton of the ECM bracket. Remove

the ECM bracket from the vehicle.

C. With a grinder, modify the plastic bracket by

removing the strengthening ribs as shown in

(Fig. 2-a)

D. Using a .25" drill, enlarge the two threaded

holes where the ECM bracket was secured.

(See Fig. 2-b..

E. Put the ECM bracket back in the vehicle plac-

ing the mounting tab underneath the original

bracket. Place the battery tray mounting

bracket back into its stock position. Using the

supplied 6mm x 50mm screws, fender wash-

ers, 6mm nuts and two .894 spacers, secure

the brackets using the original mounting holes

that have been enlarged. Use the spacers

between the ECM bracket and the inner fend-

er mount to space the ECM bracket down.

(See Fig. 2-b.)

F. Secure the ECM to the relocated bracket and

re-install the cover.

Fig. 2-a

COMPUTER RELOCATION (H2 Hummers 2003-2007)

Fig. 2-b

HOLES TO BE ENLARGED

BATTERY BRACKET IN

STOCK LOCATION

SUPPLIED SPACER

BRACKET IN

RELOCATED POSITION

RIBS TO BE REMOVED

NOTE: 2008 H2 Hummers will not need this step.

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