Hummer H2. Manual - part 1509

APP Average

TAC

0-100%

0%

APP Indicated Angle

Eng 1, Eng 2, EE, 

CC, FT, TAC, 

HO2S

Counts

0

APP Sensor 1

TAC

0-5.0 Volts

0.4-0.9 Volts

APP Sensor 2

TAC

5.0-0 Volts

4.5-4.1 Volts

APP Sensor 1

TAC

0-100%

0%

APP Sensor 2

TAC

0-100%

0%

APP Sensor 1 and 2

TAC

Agree/Disagree

Agree

BARO

Eng 1, EE, FT

kPa

50-104 kPa/Varies 

w/Altitude

CMP Sensor - High to 
Low

Eng 2

Counts

Varies

CMP Sensor - Low to 
High

Eng 2

Counts

Varies

Clutch Pedal Switch

Eng 2

Released/Applied

Released

Coolant Level Switch

Eng 2

OK/Low

OK

Cruise Control Active

Eng 1, TAC, CC

Yes/No

No

Cruise Disengage 1 
History

CC

Varies

Varies

Cruise Disengage 2 
History

CC

Varies

Varies

Cruise Disengage 3 
History

CC

Varies

Varies

Cruise Disengage 4 
History

CC

Varies

Varies

Cruise Disengage 5 
History

CC

Varies

Varies

Cruise Disengage 6 
History

CC

Varies

Varies

Cruise Disengage 7 
History

CC

Varies

Varies

Cruise Disengage 8 
History

CC

Varies

Varies

Cruise Inhibit Signal 
Command

Eng 1

On/Off

On

Cruise On/Off Switch

CC, TAC

On/Off

Off

Cruise Release Brake 
Pedal Switch

CC

Released/Applied

Released

Cruise Resume/Accel 
Switch

CC, TAC

On/Off

Off

Cruise Set/Coast Switch

CC, TAC

On/Off

Off

Current Gear

Eng 1, 2, FT

0-4

1

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Diagnostic Information & Procedures) - 4.8L, 5.3L, and 6.0L - 

Hummer H2

  

Cycles of Misfire Data

MF

0-100 Counts

Varies

Decel Fuel Cutoff

HO2S

Active/Inactive

Inactive

Desired IAC Airflow

Eng 1

0-64 g/s

Varies

Desired Idle Speed

Eng 1, Eng 2, TAC, 

EE

RPM

PCM Controlled

DTC Set This Ignition

Eng 1, 2, CC, EE, 

FT, HO2S

Yes/No

No

ECT Sensor

Eng 1, Eng 2, EE, 

FT, MF, HO2S

-39 to +140°C (-38 to +284°F)

88-105°C (190-221°F)

Engine Load

All

0-100%

1-4% @ Idle 

7-9% @ 2500 RPM

Engine Oil Level Switch

Eng 2

OK/Low

OK

Engine Oil Life 
Remaining

Eng 2

0-100%

Varies

Engine Oil Pressure 
Sensor

Eng 2

Volts

1.5 Volts/Varies

Engine Run Time

All

Hrs, Min, Sec

Varies

Engine Speed

All

0-10,000 RPM

500-700 RPM

EVAP Purge Solenoid 
Command

Eng 1, EE, FT

0-100%

10-25%

EVAP Test Result

EE

Test Result

Varies

EVAP Test State

EE

Test State

Varies

EVAP Vent Solenoid 
Command

Eng 1, EE, FT

Not Venting/Venting

Venting

Fail Counter

FF

Counts

Varies

Fuel Alcohol Content

Eng 2

%

Varies

Fuel Comp. Sensor 
Frequency

Eng 2

Hz

Varies

Fuel Comp. Sensor On 
Time

Eng 2

mS

Varies

Fuel Level Sensor

Eng 1, EE

0-5 Volts

0.7-2.5 Volts

Fuel Level Sensor Rear 
Tank, if equipped

Eng 1, EE

0-5 Volts

0.7-2.5 Volts

Fuel Tank Level 
Remaining

EE

Gallon/Liter

Varies

Fuel Tank Level 
Remaining

EE

0-100%

Varies

Fuel Tank Pressure 
Sensor

Eng 1, EE

-32.7 to +14.0 mm/Hg (-17.5 

to +7.5 in/H2O)

Varies

Fuel Tank Pressure 
Sensor

EE

0-5.0 volts

Varies

Fuel Tank Rated 
Capacity

EE

98 Liters (25.9 Gallons) or 

129 Liters (34 Gallons)

Varies with Fuel Tank 

Option

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Diagnostic Information & Procedures) - 4.8L, 5.3L, and 6.0L - 

Hummer H2

  

Fuel Temperature

Eng 2

°C/°F

Varies

Fuel Trim Cell

Eng 1, EE, FT

0-23

19

Fuel Trim Learn

Eng 1, EE, FT

Enabled/Disabled

Enabled, May Toggle

Generator F Terminal 
Signal

Eng 2

Percent

Varies

Generator L Terminal 
Signal Command

Eng 2

Off/On

On

HO2S Bank 1 Sensor 1

Eng 1, EE, FT, 

HO2S

Millivolts

10-1,000 mV and Varying

HO2S Bank 1 Sensor 2

Eng 1, FT, HO2S

Millivolts

10-1,000 mV and Varying

HO2S Bank 2 Sensor 1

Eng 1, EE, FT, 

HO2S

Millivolts

10-1,000 mV and Varying

HO2S Bank 2 Sensor 2

Eng 1, FT, HO2S

Millivolts

10-1,000 mV and Varying

HO2S Heater BN 1 
Sensor 1

HO2S

Amps

Varies

HO2S Heater BN 1 
Sensor 2

HO2S

Amps

Varies

HO2S Heater BN 2 
Sensor 1

HO2S

Amps

Varies

HO2S Heater BN 2 
Sensor 2

HO2S

Amps

Varies

Hot Run Counter

FF

Counts

Varies

IAT Sensor

Eng 1, Eng 2, EE, 

FT, HO2S

-39 to +140°C (-38 to +284°F)

35°C (91°F) Depends on 

Ambient Temperature

Ignition 1 Signal

Eng 1, Eng 2, CC, 

EE, FT, TAC

0-25 Volts

11.5-14.5 Volts

Inj. PWM Bank 1 
Average

Eng 2, FT, MF

Milliseconds

2-6

Inj. PWM Bank 2 
Average

Eng 2, FT, MF

Milliseconds

2-6

Knock Retard

Eng 1

0.0-16°

0°

Long Term FT Avg. Bn1

FT

Percentage

Near 0%

Long Term FT Avg. Bn2

FT

Percentage

Near 0%

Long Term FT Bank 1

Eng 1, Eng 2, EE, 

FT, HO2S

Percentage

Near 0%

Long Term FT Bank 2

Eng 1, Eng 2, EE, 

FT, HO2S

Percentage

Near 0%

Loop Status

Eng 1, 2, EE, FT, 

HO2S

Open/Closed

Closed

Low Oil Lamp 
Command

Eng 2

On/Off

Off

MAF Sensor

Eng 1, Eng 2, EE, 

MF, FT, TAC, 

Grams Per Seconds (g/s)

1-9 g/s @ Idle, Depends 

on Altitude 

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Diagnostic Information & Procedures) - 4.8L, 5.3L, and 6.0L - 

Hummer H2

  

HO2S

15-26 g/s @ 2,500 RPM, 

Depends on Altitude

MAF Sensor

Eng 2

0-31,999 Hz

2,000-3,000 Hz

MAP Sensor

Eng 1, Eng 2, EE, 

FT, MF, TAC, 

HO2S

kPa

20-48 kPa

MAP Sensor

Eng 1, Eng 2, 

FF/FR

Volts

1.0-2.0 Volts 

Varies with Altitude

MIL Command

Eng 2

Off/On

Off

Mileage Since DTC 
Cleared

Eng 2

kilometers/miles

Varies

Mileage Since First 
Failure

FF

Counts

Varies

Mileage Since Last 
Failure

FF

Counts

Varies

Misfire Counter Status

MF

Normal/Invalid

Normal

Misfire Current Cyl. 1-8

MF

0-200 Counts

0

Misfire History Cyl. 1-8

MF

0-65,535 Counts

0

Pass Counter

FF

Counts

Varies

PCM Reset

Eng 1, Eng 2, EE, 

FT

Yes/No

No

PCM/VCM in VTD Fail 
Enable

Eng 1

Yes/No

No

Power Enrichment

Eng 1, HO2S

Active/Inactive

Inactive

Reduced Engine Power

Eng 1, CC, TAC

Active/Inactive

Inactive

Short Term FT Avg Bn1

FT

Percentage

Near 0%

Short Term FT Avg Bn2

FT

Percentage

Near 0%

Short Term FT Bank 1

Eng 1, Eng 2, EE, 

FT, HO2S

Percentage

Near 0%

Short Term FT Bank 2

Eng 1, Eng 2, EE, 

FT, HO2S

Percentage

Near 0%

Spark

Eng 1, Eng 2, FT, 

MF, HO2S

Degrees

15-20°

Start Up ECT

Eng 2, EE, FT

C°/F°

Varies

Stop Lamp Pedal Switch

CC, TAC

Applied/Released

Released

TAC/PCM Comm Signal

TAC, CC

OK/Fault

OK

TCC Enable Solenoid 
Command

Eng 1, Eng 2

On/Off

Off

TCC PWM Solenoid 
Command

Eng 2

On/Off

Off

TFP Switch

Eng 2, CC, FT

Transmission Gear Position

Varies

Torque Delivered Signal

Eng 2, TAC

N.m lb ft

Varies

Torque Request Signal

Eng 2, TAC

N.m lb ft

406 N.m 299 lb ft

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Diagnostic Information & Procedures) - 4.8L, 5.3L, and 6.0L - 

Hummer H2