Vortech 1999-2006 4.8L/5.3L/6.0L Light Truck/SUV User Manual

Page 12

P/N: 4GL020-010

08OCT08 v5.0(99-07 GM Trk (4GLv5.0))

COMPUTER RELOCATIOn (2003 5.3L Only)

A. Remove the plastic cover protecting the vehicle

ECM. Unsnap the ECM from the bracket securing

it to the inner fender. Temporarily move the ECM

to the side to aid in the bracket relocation.

B. Remove the two screws securing both the bat-

tery tray bracket and the upper tab of the ECM

bracket. Remove the final screw securing the

bottom of the ECM bracket. Remove the ECM

bracket from the vehicle.

C. With a grinder, modify the plastic bracket by

removing the strenthening ribs as shown in (Fig.

2‑a). Slight modification of the mounting tab may

be necessary for proper fit.

D. Using a .25” drill, enlarge the two threaded holes

where the ECM bracket was secured. (See Fig.

2-b.)

E. Put the ECM bracketry 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, washers, 6mm nuts and

spacers, secure the brackets using the original

mounting holes that have been enlarged. Use

the spacers between the ECM bracket and the

inner fender 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

SUPPLIED SPACER

BRACKET IN RELOCATED POSITION

BATTERY BRACKET IN STOCK
LOCATION

RIBS MUST BE REMOVED