Vortech Alpha H3 Hummer - 2008 User Manual
Page 7
P/N: 4GN020-015
©2008 Vortech Engineering, LLC
All Rights Reserved, Intl. Copr. Secured
20OCT08 v2.0 08HummrH3(4GNv1.0)
1
A.
Disconnect the negative battery cable, and
remove the plastic engine cover.
B.
Disconnect the MAF electronics harness con-
nection from the meter. (See Fig. 1-a)
C.
Disconnect the passenger side valve cover
vent line fom the valve cover. Remove the
90° rubber elbow and set aside to be reused
in a later step.
D.
Using a 5/16” nut driver, loosen the hose
clamp securing the inlet duct to the throttle
body. Remove the air filter lid and inlet duct
to the throttle-body. (See Fig. 1-b)
E.
Disconnect the MAF harness from the lower
half of the air box. Using a 13mm socket and
long extension remove the fasteners retaining
the lower portion of the air filter enclosure to
the inner fender. Set the air box aside, it will
not be reused.
F.
Remove the MAF electronics from the previ-
ously removed air filter assembly and set
aside to be reused in a later step. (See Fig.
1-a)
G. Using a 15mm wrench detention the factory
belt tensioner and remove the accessory belt.
H.
Remove the three 15mm headed retainers
securing the factory belt tensioner to the
water pump.
I.
Remove the front skid plate and set aside.
Drain the engine coolant into a clean contain-
er and set aside to be reused in a later step.
Once the coolant is drained remove the
retainer securing the heater hose support
bracket to the front of the passenger side cyl-
inder head. (See Fig. 1-c & 1-d)
1.
PREPARATION/REMOVAL
Fig. 1-a
Fig. 1-b
Fig. 1-c
NOTE:
1. Locate the vehicles ECU and TCM modules behind the
washer fluid/coolant reservoir assembly passenger side
firewall.
2. Temporarily loosen the washer fluid/coolant reservoir
assembly to gain adequate access to the modules.
3. Unplug the four factory harness connections and
remove the modules from the vehicle.
4. Contact the Vortech Service Department for a Return
Authorization Number. Send both the ECU and TCM
and supplied credit tag to Vortech using the enclosed
shipping materials.