Hummer H2. Manual - part 1926

Fig. 1: Belt Routing (H2) 
Courtesy of GENERAL MOTORS CORP. 

ENGINE COOLING 

SERVICE 

Specifications 

COOLING SYSTEM SPECIFICATIONS 

Application

Specification

Coolant Capacity

14.8 Qts. (14.0L)

 

2004 Hummer H2 

2004 SPECIFICATIONS H2

  

Torque Specifications 

TORQUE SPECIFICATIONS 

FUEL SYSTEM 

FUEL PRESSURE 

Specifications 

FUEL PRESSURE SPECIFICATIONS 

IGNITION SYSTEM 

Coolant Replacement Intervals

(1)

 150,000 Miles

Thermostat Opening Temperatures

Thermostat Starts To Open

188°F (87°C)

Thermostat Fully Open

206°F (97°C)

(1)

Or every 60 months, whichever comes first. Use GM Goodwrench DEX-COOL(R).

Applications

Ft. Lbs. (N.m)

Coolant Heater

37 (50)

Fan Clutch Bolt

17 (23)

Fan Clutch Nut

41 (56)

Oil Cooler Hose Bracket Bolt

18 (25)

Radiator Bolt

18 (25)

Thermostat Housing Bolt

11 (15)

Water Pump Bolt

First Pass

11 (15)

Final Pass

22 (30)

INCH Lbs. (N.m)

Air Cleaner Outlet Duct Clamp Screw

62 (7)

Coolant Air Bleed Pipe Stud/Bolt

106 (12)

Coolant Heater Cord Bolt

71 (8)

Fan Shroud Bolt

80 (9)

Oil Cooler Hose Adapter Bolt

106 (12)

Surge Tank Bolt/Nut

80 (9)

Transmission Control Module (TCM) Cover Bolt

80 (9)

Transmission Control Module (TCM) Electrical Connector Bolt

71 (8)

Application

psi (kPa)

6.0L

55-62 (379-427)

 

2004 Hummer H2 

2004 SPECIFICATIONS H2

  

FIRING ORDER 

Fig. 2: Firing Order (4.8L, 5.3L, 6.0L & 8.1L) 
Courtesy of GENERAL MOTORS CORP. 

HIGH TENSION WIRES 

Resistance Specifications 

HIGH TENSION WIRE RESISTANCE 

IGNITION TIMING 

SPARK PLUGS 

NOTE:

Vehicle is equipped with a coil on each spark plug.

Application

Ohms

6.0L

1000 Per Foot

NOTE:

Ignition timing is not adjustable.

 

2004 Hummer H2 

2004 SPECIFICATIONS H2

  

All Specifications 

SPARK PLUG SPECIFICATIONS 

STARTING SYSTEM 

STARTER 

Service Applications 

STARTER MOTOR APPLICATIONS 

Torque Specifications 

TORQUE SPECIFICATIONS 

Application

Specification

Spark Plug Type

AC 25171803

NGK 12567759

Gap

0.060" (1.52 mm)

Tightening Torque

11 Ft. Lbs. (15 N.m)

Firing Order

1-8-7-2-6-5-4-3

Application

Specification

Starter Type

PG-260L

Application

Ft. Lbs. (N.m)

Battery Cable Bracket Bolt

18 (25)

Battery Hold Down Retainer Bolt

18 (25)

Battery Tray Nut

18 (25)

Engine Wiring Harness Auxiliary Negative Battery Cable Bolt

12 (16)

Engine Wiring Harness Ground Bolt

12 (16)

Engine Wiring Harness Ground/Negative Cable Bolt

18 (25)

Negative Battery Cable Bolt

13 (17)

Positive Battery Cable Bolt

13 (17)

Starter Bolt

37 (50)

INCH Lbs. (N.m)

Battery Cable Channel Bolt

106 (12)

Battery Tray Bolt

80 (9)

Ground Strap Nut

80 (9)

Positive Cable Nut

80 (9)

Positive Cable at Underhood Bussed Electrical Center (UBEC) Bolt

80 (9)

Starter Lead Nut

30 (3.4)

 

2004 Hummer H2 

2004 SPECIFICATIONS H2