Vortech 1999-2006 4.8L/5.3L/6.0L Light Truck/SUV User Manual
Page 17
P/N: 4GL020-010
©2008 Vortech Engineering, LLC
All Rights Reserved, Intl. Copr. Secured
08OCT08 v5.0(99-07 GM Trk (4GLv5.0))
7
7.
FUEL InJECTOR REPLACEMEnT (1999, 2003 and 2004-06 Models
Only/2000-2002 models Go To Step 8)
A. Relieve the fuel system pressure.
B. Disconnect the eight fuel injector wiring clips
and retainers from the injectors.
C. Remove the four 10mm bolts holding down the
fuel rail on the intake manifold. Lift up on the
rails evenly, and remove all eight injectors.
D. Using a small amount of clean motor oil, lightly
lubricate the O-rings on both ends on the Vortech
supplied fuel injectors.
E. Install the new injectors and retainers into the
fuel rails with the terminals facing outward.
F. Carefully lower the fuel rail/injector assembly
down onto the intake manifold. Check to see
that each injector has been seated properly into
the manifold.
G. Tighten down the fuel rail assembly with the
original bolts and attach the wiring clips to the
injector terminals.