Vortech H3 I-5 Hummer - 2006-2008 User Manual

Page 9

P/N: 4GN020-010

20OCT08 v2.0(4GNv2.0)

A. Disconnect the negative battery cable.

B. Disconnect the evaporative canister vent

hose from the air filter assembly and canister

and set aside. (See Fig. 1-a.)

C. Disconnect the MAF electronics harness con-

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

D. Using a 5/16" nut driver, loosen the hose

clamp securing the inlet duct to the throttle

body.

Remove the two 13mm headed screws

securing the lower portion of the air filter

enclosure to the inner fender. Remove the

two 10mm headed screws securing the inter-

mediate ducting to the cylinder head.

Remove the air filter assembly and set aside.

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-b.)

G. Using a 3/8" ratchet, de-tension the accesso-

ry belt tensioner and remove the factory belt.

H. Remove the power steering pulley using the

appropriate pulley puller. Set the pulley aside

to be re-installed in a later step.

Remove the hose from the bottom of the

power steering fluid reservoir. Drain the

power steering fluid into a clean container

and set aside. Once the fluid is drained, dis-

connect the power steering pressure line from

the bottom of the pump. (There may be resid-

ual fluid in this line.) (See Fig. 1-c.)

PREPARATION/REMOVAL

Fig. 1-a

Fig. 1-b

Fig. 1-c

POWER STEERING

RESERVOIR

P/S PRESSURE

LINE

POWER STEERING

PULLEY

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.