Vortech Alpha H3 Hummer - 2008 User Manual

Page 7

P/N: 4GN020-015

20OCT08 v2.0 08HummrH3(4GNv1.0)

Disconnect the negative battery cable, and

remove the plastic engine cover.

Disconnect the MAF electronics harness con-

nection from the meter. (See Fig. 1-a)

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.

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)

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.

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.

Remove the three 15mm headed retainers

securing the factory belt tensioner to the

water pump.

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)

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.